Found 50 papers in cond-mat Antiferromagnetic (AFM) semiconductor MnS$_2$ possesses both high-spin and
low-spin magnetic phases that can be reversibly switched by applying pressure.
With increasing pressure, the high-spin state undergoes pressure-induced
metalization before transforming into a low-spin configuration, which is then
closely followed by a volume collapse and structural transition. We show that
the pressure driven band inversion is in fact topological, resulting in an
antiferromagnetic $\mathbb{Z}_2$ topological metal (Z2AFTM) phase with a small
gap and a Weyl metal phase at higher pressures, both of which precede the
spin-state crossover and volume collapse. In the Z2AFTM phase, the magnetic
order results in a doubling of the periodic unit cell, and the resulting
folding of the Brillouin zone leads to a $\mathbb{Z}_2$ topological invariant
protected by the persisting combined time-reversal and half-translation
symmetries. Such a topological phase was proposed theoretically by Mong, Essin,
and Moore in 2010 for a system with AFM order on a face-centered cubic (FCC)
lattice, which until now has not been found in the pool of real materials.
MnS$_2$ represents a realization of this original proposal through AFM order on
the Mn FCC sublattice. A rich phase diagram of topological and magnetic phases
tunable by pressure, establishes MnS$_2$ as a candidate material for exploring
magnetic topological phase transitions and for potential applications in AFM
spintronics.
As transistor footprint scales down to sub-10 nm regime, the process
development for advancing to further technology nodes has encountered
slowdowns. Achieving greater functionality within a single chip requires
concurrent development at the device, circuit, and system levels.
Reconfigurable transistors possess the capability to transform into both n-type
and p-type transistors dynamically during operation. This transistor-level
reconfigurability enables field-programmable logic circuits with fewer
components compared to conventional circuits. However, the reconfigurability
requires additional polarity control gates in the transistor and potentially
impairs the gain from a smaller footprint. In this paper, vertical transistors
with ambipolar MoTe2 channels are fabricated using the transfer-metal method.
The efficient asymmetric electrostatic gating in source and drain contacts
gives rise to different Schottky barriers at the two contacts. Consequently,
the ambipolar conduction is reduced to unipolar conduction due to different
Schottky barrier widths for electrons and holes. The current flow direction
determines the preferred carrier type. Temperature-dependent measurements
reveal the Schottky barrier-controlled conduction in the vertical transistors
and confirm different Schottky barrier widths with and without electrostatic
gating. Without the complexity overhead from polarity control gates,
control-free vertical reconfigurable transistors promise higher logic density
and lower cost in future integrated circuits.
The formation of chiral magnetic soliton lattice (CSL) is investigated in
monoaxial chiral dichalcogenide CrTa$_{3}$S$_{6}$ crystals in terms of a
surface barrier, which prevents a penetration of chiral solitons into the
system and is an intrinsic origin of hysteresis for the continuous phase
transition of nucleation-type, as discussed in the system of quantized vortices
in type-II superconductors. The magnetoresistance (MR) was examined with
microfabricated platelet samples in different dimensions with regard to the
$c$-axis direction of the crystal. The CSL formation was confirmed by the
discrete MR changes, reflecting the number of chiral solitons, as well as by
the presence of surface barrier, recognized as a fixed ratio of critical
magnetic fields during the hysteresis field cycle. We also argue the influence
of the surface barrier in the bulk CrTa$_{3}$S$_{6}$ crystals.
Manipulation of decoupled Majorana zero modes (MZMs) could enable
topologically-protected quantum computing. However, the practical realization
of a large number of perfectly decoupled MZMs needed to perform nontrivial
quantum computation has proven to be challenging so far. Fortunately, even a
small number of imperfect MZMs can be used to qualitatively extend the behavior
of standard superconducting qubits, allowing for new approaches for noise
suppression, qubit manipulation and read-out. Such hybrid devices take
advantage of interplay of Cooper pair tunneling, coherent single electron
tunneling, and Majorana hybridization. Here we provide a qualitative
understanding of this system, give analytical results for its ground state
energy spanning full parameter range, and describe potential sensing
applications enabled by the interplay between Majorana and Cooper pair
tunneling.
We investigate topological Hall effects in a metallic antiferromagnetic (AFM)
thin film and/or at the interface of an AFM insulator-normal metal bilayer with
a single skyrmion in the diffusive regime. To determine the spin and charge
Hall currents, we employed a Boltzmann kinetic equation with both
spin-dependent and spin-flip scatterings. The interaction between conduction
electrons and static skyrmions is included in the Boltzmann equation via the
corresponding emergent magnetic field arising from the skyrmion texture. We
compute intrinsic and extrinsic contributions to the topological spin Hall
effect and spin accumulation, induced by an AFM skyrmion. We show that although
the spin Hall current vanishes rapidly outside the skyrmion, the spin
accumulation can be finite at the edges far from the skyrmion, provided the
spin diffusion length is longer than the skyrmion radius. In addition, We show
that in the presence of a spin-dependent relaxation time, the topological
charge Hall effect is finite and we determine the corresponding Hall voltage.
Our results may help to explore antiferromagnetic skyrmions by electrical means
in real materials.
We propose to simulate the anisotropic and chiral Dzyaloshinskii-Moriya (DM)
interaction with Rydberg atom arrays. The DM Hamiltonian is engineered in a
one-dimensional optical lattice or trap array with effective long-range Rydberg
spins, interacting indirectly via a mobile mediator Rydberg atom. A host of XXZ
and DM Hamiltonians can be simulated with out-of-phase sign periodic coupling
strengths; for initial states in a stationary condensate, the DM interaction
vanishes. This theory allows for determination of the DM interaction (DMI)
vector components from first principles. The inherent anisotropy of the
Rydberg-Rydberg interactions, facilitates the DMI coupling to be tuned so as to
be comparable to the XXZ interaction. Our results make plausible the formation
of non-trivial topological spin textures with Rydberg atom arrays.
We studied the electrical transport, Hall effect, and magnetic properties of
monoclinic layered ferromagnet Cr$_{2.76}$Te$_4$. Our studies demonstrate
Cr$_{2.76}$Te$_4$ to be a soft ferromagnet with strong magnetocrystalline
anisotropy. Below 50 K, the system shows an antiferromagnetic-like transition.
Interestingly, between 50 and 150 K, we observe fluctuating magnetic moments
between in-plane and out-of-plane orientations, leading to non-coplanar spin
structure. On the other hand, the electrical resistivity data suggest it to be
metallic throughout the measured temperature range, except a $kink$ at around
50 K due to AFM ordering. The Rhodes-Wohlfarth ratio
$\frac{\mu_{eff}}{\mu_{s}}=1.89 (>1)$ calculated from our magnetic studies
confirms that Cr$_{2.76}$Te$_4$ is an itinerant ferromagnet. Large anomalous
Hall effect has been observed due to the skew-scattering of impurities and the
topological Hall effect has been observed due to non-coplanar spin-structure in
the presence of strong magnetocrystalline anisotropy. We examined the mechanism
of anomalous Hall effect by employing the first principles calculations.
Understanding the doping evolution from a Mott insulator to a superconductor
probably holds the key for resolving the mystery of unconventional
superconductivity in copper oxides. To elucidate the evolution of the
electronic state starting from the Mott insulator, we dose the surface of the
parent phase Ca$_{2}$CuO$_{2}$Cl$_{2}$ by depositing one monolayer thin film of
Rb atoms which are supposed to donate electrons to the CuO$_{2}$ planes
underneath. We successfully achieved the Rb thin films with periodic
structures, and the scanning tunneling microscopy or spectroscopy (STM or STS)
measurements on the surface show that the Fermi energy is pinned within the
Mott gap but more close to the edge of the charge transfer band (CTB). However,
the electron doping does not reduce the spectra weight of the upper Hubbard
band (UHB) for the double occupancy as expected from the rigid model, but
instead increase it; meanwhile, further doping will create a new wide spread in
gap states derivative from the UHB, and the Mott gap will be significantly
diminished. Our results provide new clues to understand the strong correlation
effect of parent Mott insulators for cuprates and shed new light on the origin
of high-temperature superconductivity.
Electronic correlations in two-dimensional materials play a crucial role in
stabilising emergent phases of matter. The realisation of correlation-driven
phenomena in graphene has remained a longstanding goal, primarily due to the
absence of strong electron-electron interactions within its low-energy bands.
In this context, magic-angle twisted bilayer graphene has recently emerged as a
novel platform featuring correlated phases favoured by the low-energy flat
bands of the underlying moir\'e superlattice. Notably, the observation of
correlated insulators and superconductivity has garnered significant attention,
leading to substantial progress in theoretical and experimental studies aiming
to elucidate the origin and interplay between these two phases. A wealth of
correlated phases with unprecedented tunability was discovered subsequently,
including orbital ferromagnetism, Chern insulators, strange metallicity,
density waves, and nematicity. However, a comprehensive understanding of these
closely competing phases remains elusive. The ability to controllably twist and
stack multiple graphene layers has enabled the creation of a whole new family
of moir\'e superlattices with myriad properties being discovered at a fast
pace. Here, we review the progress and development achieved so far,
encompassing the rich phase diagrams offered by these graphene-based moir\'e
systems. Additionally, we discuss multiple phases recently observed in
non-moir\'e multilayer graphene systems. Finally, we outline future
opportunities and challenges for the exploration of hidden phases in this new
generation of moir\'e materials.
At ambient conditions SrAl$_4$ adopts the BaAl$_4$ structure type with space
group $I4/mmm$. It undergoes a charge-density-wave (CDW) transition at
$T_{CDW}$ = 243 K, followed by a structural transition at $T_{S}$ = 87 K.
Temperature-dependent single-crystal X-ray diffraction (SXRD) leads to the
observation of incommensurate superlattice reflections at $\mathbf{q} =
\sigma\,\mathbf{c}^{*}$ with $\sigma = 0.1116$ at 200 K. The CDW has
orthorhombic symmetry with the superspace group $Fmmm(0\,0\,\sigma)s00$, where
$Fmmm$ is a subgroup of $I4/mmm$ of index 2. Atomic displacements represent a
transverse wave, and they are mainly along one of the diagonal directions of
the $I$-centered unit cell. The breaking of fourfold rotational symmetry is
indicative of the presence of nematic order in the material. The orthorhombic
phase realized in SrAl$_4$ is analogous to that found in EuAl$_4$, albeit with
the presence of higher order satellite reflections (up to $m = 3$) and a
shorter modulation wave vector. A possible non-trivial band topology has
prevented the determination by density functional theory (DFT) of the mechanism
of CDW formation. However, DFT reveals that Al atoms dominate the density of
states near the Fermi level, thus, corroborating the SXRD measurements.
SrAl$_4$ remains incommensurately modulated at the structural transition, where
the symmetry lowers from orthorhombic to $\mathbf{b}$-unique monoclinic. We
have identified a simple criterion, that correlates the presence of a phase
transition with the interatomic distances. Only those compounds
$X$Al$_{4-x}$Ga$_x$ ($X$ = Ba, Eu, Sr, Ca; $0 < x <4$) undergo phase
transitions, for which the ratio $c/a$ falls within the narrow range $2.51 <
c/a < 2.54$.
MoS2 nanostructures are promising catalysts for proton-exchange-membrane
(PEM) electrolyzers to replace expensive noble metals. Their broadscale
application demands high activity for the hydrogen evolution reaction (HER) as
well as good durability. Doping in MoS2 is commonly applied to enhance the HER
activity of MoS2-based nanocatalysts, but the effect of dopants in the
electrochemical and structural stability is yet to be discussed. Herein, we
correlate operando electrochemical measurements to the structural evolution of
the materials down to the nanometric scale by identical location electron
microscopy and spectroscopy. Different degradation mechanisms at first
electrolyte contact, open circuit stabilization and HER conditions are
identified for MoS2 nanocatalysts with and without Rhenium doping. Our results
demonstrate that doping in MoS2 nanocatalysts can not only improve their HER
activity, but also their stability. Doping of MoS2-based nanocatalysts is
validated as a promising strategy to follow for the continuous improvement of
high performance and durable PEM electrolyzers.
We consider a thin film of a topological insulator (TI) sandwiched between
two ferromagnetic (FM) layers. The system is additionally under an external
gate voltage. The surface electron states of TI are magnetized due to the
magnetic proximity effect to the ferromagnetic layers. The magnetization of
ferromagnetic layers can be changed by applying an external magnetic field or
by varying thickness of the topological insulator (owing to the interlayer
exchange coupling). The change in the magnetic configuration of the system
affects the transport properties of the surface electronic states. Using the
Green function formalism, we calculate spin polarization, anomalous Hall
effect, and magnetoresistance of the system. We show, among others, that by
tuning the gate voltage and magnetizations of the top and bottom FM layers, one
can observe the topological transition to the anomalous quantum Hall state.
Ultrafast electron-phonon relaxation dynamics in graphene hides many distinct
phenomena, such as hot phonon generation, dynamical Kohn anomalies, and phonon
decoupling, yet still remains largely unexplored. Here, we unravel intricate
mechanisms governing the vibrational relaxation and phonon dressing in graphene
at a highly non-equilibrium state by means of first-principles techniques. We
calculate dynamical phonon spectral functions and momentum-resolved linewidths
for various stages of electron relaxation and find photo-induced phonon
hardening, overall increase of relaxation rate and nonadiabaticity as well as
phonon gain. Namely, the initial stage of photo-excitation is found to be
governed by strong phonon anomalies of finite-momentum optical modes along with
incoherent phonon production. Population inversion state, on the other hand,
allows production of coherent and strongly-coupled phonon modes. Our research
provides vital insights into the electron-phonon coupling phenomena in
graphene, and serves as a foundation for exploring non-equilibrium phonon
dressing in materials where ordered states and phase transitions can be induced
by photo-excitation.
The parent compound of cuprates is a charge-transfer-type Mott insulator with
strong hybridization between the Cu $3d_{\mathrm x^2-y^2}$ and O $2p$ orbitals.
A key question concerning the pairing mechanism is the behavior of doped holes
in the antiferromagnetic (AF) Mott insulator background, which is a
prototypical quantum many-body problem. It was proposed that doped hole on the
O site tends to form a singlet, known as Zhang-Rice singlet (ZRS), with the
unpaired Cu spin. But experimentally little is known about the properties of a
single hole and the interplay between them that leads to superconductivity.
Here we use scanning tunneling microscopy to visualize the electronic states in
hole-doped $\mathrm{Ca_2CuO_2Cl_2}$, aiming to establish the atomic-scale local
basis for pair formation. A single doped hole is shown to have an in-gap state
and a clover-shaped spatial distribution that can be attributed to a localized
ZRS. When the dopants are close enough, they develop delocalized molecular
orbitals with characteristic stripe- and ladder-shaped patterns, accompanied by
the opening of a small gap around the Fermi level ($E_{\mathrm F}$). With
increasing doping, the molecular orbitals proliferate in space and gradually
form densely packed plaquettes, but the stripe and ladder patterns remain
nearly the same. The low-energy electronic states of the molecular orbitals are
intimately related to the local pairing properties, thus play a vitally
important role in the emergence of superconductivity. We propose that the
Cooper pair is formed by two holes occupying the stripe-like molecular orbital,
while the attractive interaction is mediated by the AF spin background.
Relativistic magnetic hyperfine interaction Hamiltonian based on the
Douglas-Kroll-Hess (DKH) theory up to the second order is implemented within
the ab initio multireference methods including spin-orbit coupling in the
Molcas/OpenMolcas package. This implementation is applied to calculate
relativistic hyperfine coupling (HFC) parameters for atomic systems and
diatomic radicals with valence s or d orbitals by systematically varying active
space size in the restricted active space self-consistent field (RASSCF)
formalism with restricted active space state interaction (RASSI) for spin-orbit
coupling. The DKH relativistic treatment of the hyperfine interaction reduces
the Fermi contact contribution to the HFC due to the presence of kinetic
factors that regularize the singularity of the Dirac delta function in the
nonrelativitic Fermi contact operator. This effect is more prominent for
heavier nuclei. As the active space size increases, the relativistic correction
of the Fermi contact contribution converges well to the experimental data for
light and moderately heavy nuclei. The relativistic correction, however, does
not significantly affect the spin-dipole contribution to the hyperfine
interaction. In addition to the atomic and molecular systems, the
implementation is applied to calculate the relativistic HFC parameters for
large trivalent and divalent Tb-based single-molecule magnets (SMMs) such as
Tb(III)Pc$_2$ and Tb(II)(Cp$^\text{iPr5}$)$_2$ without ligand truncation using
well-converged basis sets. In particular, for the divalent SMM which has an
unpaired valence 6s/5d hybrid orbital, the relativistic treatment of HFC is
crucial for a proper description of the Fermi contact contribution. Even with
the relativistic hyperfine Hamiltonian, the divalent SMM is shown to exhibit
strong tunability of HFC via an external electric field (i.e., strong hyperfine
Stark effect).
Exploring the topology of electronic bands is a way to realize new states of
matter with possible implications for information technology. Because bands
cannot always be observed directly, a central question is how to tell that a
topological regime has been achieved. Experiments are often guided by a
prediction of a unique signal or a pattern, called "the smoking gun". Examples
include peaks in conductivity, microwave resonances, and shifts in interference
fringes. However, many condensed matter experiments are performed on relatively
small, micron or nanometer-scale, specimens. These structures are in the
so-called mesoscopic regime, between atomic and macroscopic physics, where
phenomenology is particularly rich. In this paper, we demonstrate that the
trivial effects of quantum confinement, quantum interference and charge
dynamics in nanostructures can reproduce accepted smoking gun signatures of
triplet supercurrents, Majorana modes, topological Josephson junctions and
fractionalized particles. The examples we use correspond to milestones of
topological quantum computing: qubit spectroscopy, fusion and braiding. None of
the samples we use are in the topological regime. The smoking gun patterns are
achieved by fine-tuning during data acquisition and by subsequent data
selection to pick non-representative examples out of a fluid multitude of
similar patterns that do not generally fit the "smoking gun" designation.
Building on this insight, we discuss ways that experimentalists can rigorously
delineate between topological and non-topological effects, and the effects of
fine-tuning by deeper analysis of larger volumes of data.
The analog electronic computers are a type of circuitry used to calculate
specific problems using the physical relationships between the voltages and
currents following classical laws of physics. One specific class of these
circuits are computers based on the interactions between passive circuit
elements. Models presented by G.Kron in 1945 are the example of using such
passive elements to construct a solver for the problem of free quantum
particles confined by rectangular potential. Numerical validation of Kron
second model is conducted for different shapes of particle confining potential.
Model introduced by Kron is generalized by introduction of non-linear resistive
elements what implies deformation of Schr\"odinger equation solution into
Ginzburg-Landau form.
Elucidating transport mechanisms and predicting transport coefficients is
crucial for advancing material innovation, design, and application. Yet,
state-of-the-art calculations are restricted to exact simulations of small
lattices with severe finite-size effects or approximate simulations that assume
the nature of transport. We leverage recent algorithmic advances to perform
exact simulations of the celebrated Holstein model that systematically quantify
and eliminate finite-size effects to gain insights into small polaron formation
and the nature and timescales of its transport. We perform the first systematic
comparison of the performance of two distinct approaches to predict charge
carrier mobility: equilibrium-based Green-Kubo relations and nonequilibrium
relaxation methods. Our investigation uncovers when and why disparities arise
between these ubiquitously used techniques, revealing that the
equilibrium-based method is highly sensitive to system topology whereas the
nonequilibrium approach requires bigger system sizes to reveal its diffusive
region. Contrary to assumptions made in standard perturbative calculations, our
results demonstrate that small polarons exhibit anomalous transport and that it
manifests transiently, due to nonequilibrium lattice relaxation, or
permanently, as a signature of immovable boundaries. These findings have
consequences for applications including the utilization of organic polymers in
organic electronics and transition metal oxides in photocatalysis.
Topological properties in quantum materials are often governed by symmetry
and tuned by crystal structure and external fields, and hence
symmetry-sensitive nonlinear optical measurements in a magnetic field are a
valuable probe. Here we report nonlinear magneto-optical second harmonic
generation (SHG) studies of non-magnetic topological materials including
bilayer WTe2, monolayer WSe2 and bulk TaAs. The polarization-resolved patterns
of optical SHG under magnetic field show nonlinear Kerr rotation in these
time-reversal symmetric materials. For materials with three-fold rotational
symmetric lattice structure, the SHG polarization pattern rotates just slightly
in a magnetic field, whereas in those with mirror or two-fold rotational
symmetry the SHG polarization pattern rotates greatly and distorts. These
different magneto-SHG characters can be understood by considering the
superposition of the magnetic field-induced time-noninvariant nonlinear optical
tensor and the crystal-structure-based time-invariant counterpart. The
situation is further clarified by scrutinizing the Faraday rotation, whose
subtle interplay with crystal symmetry accounts for the diverse behavior of the
extrinsic nonlinear Kerr rotation in different materials. Our work illustrates
the application of magneto-SHG techniques to directly probe nontrivial
topological properties, and underlines the importance of minimizing extrinsic
nonlinear Kerr rotation in polarization-resolved magneto-optical studies.
Emerging altermagnetic materials with vanishing net magnetizations and unique
band structures have been envisioned as an ideal electrode to design
antiferromagnetic tunnel junctions. Their momentum-resolved spin splitting in
band structures defines a spin-polarized Fermi surface, which allows
altermagnetic materials to polarize current as a ferromagnet, when the current
flows along specific directions relevant to their altermagnetism. Here, we
design an Altermagnet/Insulator barrier/Ferromagnet junction, renamed as
altermagnetic tunnel junction (ATMTJ), using RuO$_2$/TiO$_2$/CrO$_2$ as a
prototype. Through first-principles calculations, we investigate the tunneling
properties of the ATMTJ along the [001] and [110] directions, which shows that
the tunneling magnetoresistance (TMR) is almost zero when the current flows
along the [001] direction, while it can reach as high as 6100% with current
flows along the [110] direction. The spin-resolved conduction channels of the
altermagnetic RuO$_2$ electrode are found responsible for this
momentum-dependent (or transport-direction-dependent) TMR effect. Furthermore,
this ATMTJ can also be used to readout the N\'{e}el vector of the altermagnetic
electrode RuO$_2$. Our work promotes the understanding toward the altermagnetic
materials and provides an alternative way to design magnetic tunnel junctions
with ultrahigh TMR ratios and robustness of the altermagnetic electrode against
external disturbance, which broadens the application avenue for
antiferromagnetic spintronics devices.
We discuss the generalization of the local renormalization group approach to
theories in which Weyl symmetry is gauged. These theories naturally correspond
to scale invariant -- rather than conformal invariant -- models in the flat
space limit. We argue that this generalization can be of use when discussing
the issue of scale vs conformal invariance in quantum and statistical field
theories. The application of Wess-Zumino consistency conditions constrains the
form of the Weyl anomaly and the beta functions in a nonperturbative way. In
this work we concentrate on two dimensional models including also the
contributions of the boundary. Our findings suggest that the renormalization
group flow is irreversible in the sense of Zamolodchikov only if a new charge
does not appear in the anomaly. It does not seem to be possible to find a
general scheme for which the new charge is zero. Two illustrative examples
involving flat space's conformal and scale invariant models that do not allow
for a naive application of the standard local treatment are given.
In multistate non-Hermitian systems, higher-order exceptional points (EP) and
exotic phenomena with no analogues in two-level systems arise, which have
spawned intriguing prospects. A paradigm is an exceptional nexus (EX), a
third-order EP as the cusp singularity of multiple exceptional arcs (EAs), that
has a unique, hybrid topological nature. Using Bose-Einstein condensates to
simulate the dynamics of a dissipative three-state system, we observe an EX
formed by the coalescence of two EAs with different EP geometries. These
exceptional structures are realized by controlling only two real parameters
even in the absence of symmetry, and originate from the different roles of
dissipation in the strong coupling limit and quantum Zeno regime, respectively.
Our work paves the way for exploring higher-order EP physics in the many-body
setting of ultracold atoms.
Monolayers of transition metal dichalcogenides (TMDC) are direct-gap
semiconductors with strong light-matter interactions featuring tightly bound
excitons, while plasmonic crystals (PCs), consisting of metal nanoparticles
that act as meta-atoms, exhibit collective plasmon modes and allow one to
tailor electric fields on the nanoscale. Recent experiments show that TMDC-PC
hybrids can reach the strong-coupling limit between excitons and plasmons
forming new quasiparticles, so-called plexcitons. To describe this coupling
theoretically, we develop a self-consistent Maxwell-Bloch theory for TMDC-PC
hybrid structures, which allows us to compute the scattered light in the near-
and far-field explicitly and provide guidance for experimental studies. Our
calculations reveal a spectral splitting signature of strong coupling of more
than $100\,$meV in gold-MoSe$_2$ structures with $30\,$nm nanoparticles,
manifesting in a hybridization of exciton and plasmon into two effective
plexcitonic bands. In addition to the hybridized states, we find a remaining
excitonic mode with significantly smaller coupling to the plasmonic near-field,
emitting directly into the far-field. Thus, hybrid spectra in the strong
coupling regime can contain three emission peaks.
The Landauer principle states that decrease in entropy of a system,
inevitably leads to a dissipation of heat to the environment. This statement is
usually established by considering the system to be in contact with an
environment that is initially in a thermal state with the system-environment
initial state being in a product state. Here we show that a modified Landauer
principle, with correction terms, still holds even if the system and
environment are initially correlated and the environment is in an athermal
state. Furthermore, we consider a case where the system is in contact with a
large athermal environment, such that the system dynamics allow Born-Markov
approximations, and we derive the finite-time modified Landauer's bound for the
same.
Non-Hermitian physics and topological phenomena are two hot topics attracted
much attention in condensed matter physics and artificial metamaterials.
Thermal metamaterials are one type of metamaterials that can manipulate heat on
one's own. Recently, it has been found that non-Hermitian physics and
topological phenomena can be implemented in purely diffusive systems. However,
conduction alone is not omnipotent due to the missing of degrees of freedom.
Heat convection, accompanying with conduction, is capable of realizing a large
number of phases. In this review, we will present some important works on
non-Hermitian and topological convective thermal metamaterials. In
non-Hermitian physics, we will first discuss the implementation of exceptional
point (EP) in thermal diffusion, followed by high-order EP and dynamic
encirclement of EP. We then discuss two works on the extensions of EP in
diffusion systems, namely, the chiral thermal behavior in the vicinity of EP
and the Weyl exceptional ring. For topological phases, we will discuss two
examples: a one-dimensional topological insulator and a two-dimensional
quadrupole topological insulator. Finally, we will make a conclusion and
present a promising outlook in this area. Convective thermal metamaterials
offer an excellent platform for investigating non-Hermitian physics and
topological phases. In addition, non-Hermitian and topological thermal
metamaterials have great potential for industrial applications.
The combined law of thermodynamics derived by Gibbs laid the foundation of
thermodynamics though only applicable to systems without internal processes.
Gibbs further derived the classical statistical thermodynamics in terms of the
probability of configurations in a system, which was extended to quantum
mechanics-based statistical thermodynamics by Landau, while the irreversible
thermodynamics was systemized by Onsager and expanded to chemical reactions by
Prigogine. The development of density function theory (DFT) by Kohn enabled the
quantitative prediction of properties of the ground-state configuration of a
system from quantum mechanics. Here, we will present our theories that
integrate quantum, statistical, and irreversible thermodynamics in a coherent
framework by utilizing the predicative capability of DFT to revise the
statistical thermodynamics (zentropy theory) and by keeping the entropy
production due to irreversible processes in the combine law of thermodynamics
to derive flux equations (theory of cross phenomena). The zentropy theory is
shown capable of predicting the free energy landscape including singularity and
instability at critical point and emergent positive or negative divergences of
properties. The theory of cross phenomena can predict the coefficients of
internal processes between conjugate variables (direct phenomena) and
non-conjugate variables (cross phenomena) in the combined law of
thermodynamics. Both are with inputs from DFT-based calculations only and
without fitting parameters.
We reconsider the phase diagram of a three-dimensional $\mathbb{Z}_2$
topological insulator in the presence of short-ranged potential disorder with
the insight that non-perturbative rare states destabilize the noninteracting
Dirac semimetal critical point separating different topological phases. Based
on our numerical data on the density of states, conductivity, and
wavefunctions, we argue that the putative Dirac semimetal line is destabilized
into a diffusive metal phase of finite extent due to non-perturbative effects
of rare regions. We discuss the implications of these results for past and
current experiments on doped topological insulators.
Topological materials hosting metallic edges characterized by integer
quantized conductivity in an insulating bulk have revolutionized our
understanding of transport in matter. The topological protection of these edge
states is based on symmetries and dimensionality. However, only
integer-dimensional models have been classified, and the interplay of topology
and fractals, which may have a non-integer dimension, remained largely
unexplored. Quantum fractals have recently been engineered in metamaterials,
but up to present no topological states were unveiled in fractals realized in
real materials. Here, we show theoretically and experimentally that topological
edge and corner modes arise in fractals formed upon depositing thin layers of
bismuth on an indium antimonide substrate. Scanning tunneling microscopy
reveals the appearance of (nearly) zero-energy modes at the corners of
Sierpi\'nski triangles, as well as the formation of outer and inner edge modes
at higher energies. Unexpectedly, a robust and sharp depleted mode appears at
the outer and inner edges of the samples at negative bias voltages. The
experimental findings are corroborated by theoretical calculations in the
framework of a continuum muffin-tin and a lattice tight-binding model. The
stability of the topological features to the introduction of a Rashba
spin-orbit coupling and disorder is discussed. This work opens the perspective
to novel electronics in real materials at non-integer dimensions with robust
and protected topological states.
Superconducting (SC) tips for scanning tunneling microscopy (STM) can enhance
a wide range of surface science studies because they offer exquisite energy
resolution, allow the study of Josephson tunneling, or provide spatial contrast
based on the local interaction of the SC tip with the sample. The appeal of a
SC tip is also practical. An SC gap can be used to characterize and optimize
the noise of a low-temperature apparatus. Unlike typical samples, SC tips can
be made with less ordered materials, such as from SC polycrystalline wires or
by coating a normal metal tip with a superconductor. Those recipes either
require additional laboratory infrastructure or are carried out in ambient
conditions, leaving an oxidized tip behind. Here, we revisit the vacuum
cleaving of an Nb wire to prepare fully gapped tips in an accessible one-step
procedure. To show their utility, we measure the SC gap of Nb on Au(111) to
determine the base temperature of our microscope and to optimize its RF
filtering. The deliberate coating of the Nb tip with Au fully suppresses the SC
gap and we show how sputtering with Ar$^{+}$ ions can be used to gradually
recover the gap, promising tunability for tailored SC gaps sizes.
Simulating lattice gauge theory (LGT) Hamiltonian and its nontrivial states
by programmable quantum devices has attracted numerous attention in recent
years. Rydberg atom arrays constitute one of the most rapidly developing arenas
for quantum simulation and quantum computing. The $\mathbb{Z}_2$ LGT and
topological order has been realized in experiments while the $U(1)$ LGT is
being worked hard on the way. States of LGT have local constraint and are
fragmented into several winding sectors with topological protection. It is
therefore difficult to reach the ground state in target sector for experiments,
and it is also an important task for quantum topological memory. Here, we
propose a protocol of sweeping quantum annealing (SQA) for searching the ground
state among topological sectors. With the quantum Monte Carlo method, we show
that this SQA has linear time complexity of size with applications to the
antiferromagnetic transverse field Ising model, which has emergent $U(1)$ gauge
fields. This SQA protocol can be realized easily on quantum simulation
platforms such as Rydberg array and D-wave annealer. We expect this approach
would provide an efficient recipe for resolving the topological hindrances in
quantum optimization and the preparation of quantum topological state.
We consider a paradigmatic solvable model of topological order in two
dimensions, Kitaev's honeycomb Hamiltonian, and turn it into a measurement-only
dynamics consisting of stochastic measurements of two-qubit bond operators. We
find an entanglement phase diagram that resembles that of the Hamiltonian
problem in some ways, while being qualitatively different in others. When one
type of bond is dominantly measured, we find area-law entangled phases that
protect two topological qubits (on a torus) for a time exponential in system
size. This generalizes the recently-proposed idea of Floquet codes, where
logical qubits are dynamically generated by a time-periodic measurement
schedule, to a stochastic setting. When all types of bonds are measured with
comparable frequency, we find a critical phase with a logarithmic violation of
the area-law, which sharply distinguishes it from its Hamiltonian counterpart.
The critical phase has the same set of topological qubits, as diagnosed by the
tripartite mutual information, but protects them only for a time polynomial in
system size. Furthermore, we observe an unusual behavior for the dynamical
purification of mixed states, characterized at late times by the dynamical
exponent $z = 1/2$ -- a super-ballistic dynamics made possible by measurements.
Many models of flocking involve alignment rules based on the mean orientation
of neighboring particles, which we show introduces microscopic non-reciprocal
interactions. In the absence of this microscopic non-reciprocity an exceptional
phase transition is predicted at low noise strength within the Toner-Tu
framework of polar aligning matter; we demonstrate this transition via
large-scale numerical simulations. By coarse-graining the microscopic
non-reciprocal forces found in more common models of flocking, we identify
additional terms in a hydrodynamic description which lead to a highly ordered
clustered phase in metric models and restore the homogeneous flocking phase in
topological models.
A highly coveted goal is to realize emergent non-Abelian gauge theories and
their anyonic excitations, which encode decoherence-free quantum information.
While measurements in quantum devices provide new hope for scalably preparing
such long-range entangled states, existing protocols using the experimentally
established ingredients of a finite-depth circuit and a single round of
measurement produce only Abelian states. Surprisingly, we show there exists a
broad family of non-Abelian states -- namely those with a Lagrangian subgroup
-- which can be created using these same minimal ingredients, bypassing the
need for new resources such as feed-forward. To illustrate that this provides
realistic protocols, we show how $D_4$ non-Abelian topological order can be
realized, e.g., on Google's quantum processors using a depth-11 circuit and a
single layer of measurements. Our work opens the way towards the realization
and manipulation of non-Abelian topological orders, and highlights
counter-intuitive features of the complexity of non-Abelian phases.
The development of two-dimensional materials has resulted in a diverse range
of novel, high-quality compounds with increasing complexity. A key requirement
for a comprehensive quantitative theory is the accurate determination of these
materials' band structure parameters. However, this task is challenging due to
the intricate band structures and the indirect nature of experimental probes.
In this work, we introduce a general framework to derive band structure
parameters from experimental data using deep neural networks. We applied our
method to the penetration field capacitance measurement of trilayer graphene,
an effective probe of its density of states. First, we demonstrate that a
trained deep network gives accurate predictions for the penetration field
capacitance as a function of tight-binding parameters. Next, we use the fast
and accurate predictions from the trained network to automatically determine
tight-binding parameters directly from experimental data, with extracted
parameters being in a good agreement with values in the literature. We conclude
by discussing potential applications of our method to other materials and
experimental techniques beyond penetration field capacitance.
A resistor at finite temperature produces white noise fluctuations of the
current called Johnson-Nyquist noise. Measuring the amplitude of this noise
provides a powerful primary thermometry technique to access the electron
temperature. In practical situations, however, one needs to generalize the
Johnson-Nyquist theorem to handle spatially inhomogeneous temperature profiles.
Recent work provided such a generalization for ohmic devices obeying the
Wiedemann-Franz law, but there is a need to provide a similar generalization
for hydrodynamic electron systems, since hydrodynamic electrons provide unusual
sensitivity for Johnson noise thermometry but they do not admit a local
conductivity nor obey the Wiedemann-Franz law. Here we address this need by
considering low-frequency Johnson noise in the hydrodynamic setting for a
rectangular geometry. Unlike in the ohmic setting, we find that the Johnson
noise is geometry-dependent due to non-local viscous gradients. Nonetheless,
ignoring the geometric correction only leads to an error of at most 40% as
compared to naively using the ohmic result.
We investigate the ground states of spin-$S$ Kitaev ladders using exact
analytical solutions (for $S = 1/2$), perturbation theory, and the density
matrix renormalization group (DMRG) method. We find an even-odd effect: in the
case of half-integer $S$, we find phases with spontaneous symmetry breaking
(SSB) and symmetry-protected topological (SPT) order; for integer $S$, we find
SSB and trivial paramagnetic phases. We also study the transitions between the
various phases; notably, for half-integer $S$ we find a transition between two
distinct SPT orders, and for integer $S$ we find unnecessary first order phase
transitions within a trivial phase
Classical artificial neural networks have witnessed widespread successes in
machine-learning applications. Here, we propose fermion neural networks (FNNs)
whose physical properties, such as local density of states or conditional
conductance, serve as outputs, once the inputs are incorporated as an initial
layer. Comparable to back-propagation, we establish an efficient optimization,
which entitles FNNs to competitive performance on challenging machine-learning
benchmarks. FNNs also directly apply to quantum systems, including hard ones
with interactions, and offer in-situ analysis without preprocessing or
presumption. Following machine learning, FNNs precisely determine topological
phases and emergent charge orders. Their quantum nature also brings various
advantages: quantum correlation entitles more general network connectivity and
insight into the vanishing gradient problem, quantum entanglement opens up
novel avenues for interpretable machine learning, etc.
A number of interesting physical phenomena have been discovered in
magic-angle twisted bilayer graphene (MATBG), such as superconductivity,
correlated gapped and gapless phases, etc. The gapped phases are believed to be
symmetry-breaking states described by mean-field theories, whereas gapless
phases exhibit features beyond mean field. This work, combining poor man's
scaling, numerical renormalization group, and dynamic mean-field theory,
demonstrates that the gapless phases are the heavy Fermi liquid state with some
symmetries broken and the others preserved. We adopt the recently proposed
topological heavy fermion model for MATBG with effective local orbitals around
AA-stacking regions and Dirac fermions surrounding them. At zero temperature
and most non-integer fillings, the ground states are found to be heavy Fermi
liquids and exhibit Kondo resonance peaks. The Kondo temperature $T_K$ is found
at the order of 1meV. A higher temperature than $T_K$ will drive the system
into a metallic LM phase where disordered LM's and a Fermi liquid coexist. At
integer fillings $\pm1,\pm2$, $T_K$ is suppressed to zero or a value weaker
than RKKY interaction, leading to Mott insulators or symmetry-breaking states.
This theory offers a unified explanation for several experimental observations,
such as zero-energy peaks and quantum-dot-like behaviors in STM, the
Pomeranchuk effect, and the saw-tooth feature of inverse compressibility, etc.
For future experimental verification, we predict that the Fermi surface in the
gapless phase will shrink upon heating - as a characteristic of the heavy Fermi
liquid. We also conjecture that the heavy Fermi liquid is the parent state of
the observed unconventional superconductivity because the Kondo screening
reduces the overwhelming Coulomb interaction (~60meV) to a rather small
effective interaction (~1meV) comparable to possible weak attractive
interactions.
The Hatano-Nelson model is one of the most prototypical non-Hermitian models
that exhibit the intrinsic non-Hermitian topological phases and the concomitant
skin effect. These phenomena unique to non-Hermitian topological systems
originate from the Galilean transformation. Here, we extend such an idea to a
broader range of systems based on an imaginary boost deformation and identify
the corresponding energy-twisted boundary conditions. This imaginary boost
deformation complexifies spectral parameters of integrable models and can be
implemented by the coordinate Bethe ansatz. We apply the imaginary boost
deformation to several typical integrable models, including free fermions, the
Calogero-Sutherland model, and the XXZ model. We find the complex-spectral
winding in free fermion models under the periodic boundary conditions and the
non-Hermitian skin effect under the open boundary conditions. The interaction
effect is also shown in the two-particle spectrum of the XXZ model.
The coherent dynamics of a quantum mechanical two-level system passing
through an anti-crossing of two energy levels can give rise to
Landau-Zener-St\"uckelberg-Majorana (LZSM) interference. LZSM interference
spectroscopy has proven to be a fruitful tool to investigate charge noise and
charge decoherence in semiconductor quantum dots (QDs). Recently, bilayer
graphene has developed as a promising platform to host highly tunable QDs
potentially useful for hosting spin and valley qubits. So far, in this system
no coherent oscillations have been observed and little is known about charge
noise in this material. Here, we report coherent charge oscillations and
$T_2^*$ charge decoherence times in a bilayer graphene double QD. The charge
decoherence times are measured independently using LZSM interference and photon
assisted tunneling. Both techniques yield $T_2^*$ average values in the range
of 400 to 500~ps. The observation of charge coherence allows to study the
origin and spectral distribution of charge noise in future experiments.
Microswimmer suspensions in Newtonian fluids exhibit unusual macroscale
properties, such as a superfluidic behavior, which can be harnessed to perform
work at microscopic scales. Since most biological fluids are non-Newtonian,
here we study the rheology of a microswimmer suspension in a weakly
viscoelastic shear flow. At the individual level, we find that the viscoelastic
stresses generated by activity substantially modify the Jeffery orbits
well-known from Newtonian fluids. The orientational dynamics depends on the
swimmer type; especially pushers can resist flow-induced rotation and align at
an angle with the flow. To analyze its impact on bulk rheology, we study a
dilute microswimmer suspension in the presence of random tumbling and
rotational diffusion. Strikingly, swimmer activity and its elastic response in
polymeric fluids alter the orientational distribution and substantially amplify
the swimmer-induced viscosity. This suggests that pusher suspensions reach the
superfluidic regime at lower volume fractions compared to a Newtonian fluid
with identical viscosity.
This work explores the possibility of creating and controlling unconventional
nonlinearities by periodic driving, in a broad class of systems described by
the nonlinear Schr\"odinger equation (NLSE). By means of a parent quantum
many-body description, we demonstrate that such driven systems are well
captured by an effective NLSE with emergent nonlinearities, which can be finely
controlled by tuning the driving sequence. We first consider a general class of
two-mode nonlinear systems - relevant to optical Kerr cavities, waveguides and
Bose-Einstein condensates - where we find an emergent four-wave mixing
nonlinearity, which originates from pair-hopping processes in the parent
quantum picture. Tuning this drive-induced nonlinearity is shown to modify the
phase-space topology, which can be detected through relative population and
phase measurements. We then couple individual (two-mode) dimers in view of
designing extended lattice models with unconventional nonlinearities and
controllable pair-hopping processes. Following this general dimerization
construction, we obtain an effective lattice model with drive-induced
interactions, whose ground-state exhibits orbital order, chiral currents and
emergent magnetic fluxes through the spontaneous breaking of time-reversal
symmetry. We analyze these intriguing properties both in the weakly-interacting
(mean-field) regime, captured by the effective NLSE, and in the
strongly-correlated quantum regime. Our general approach opens a route for the
engineering of unconventional optical nonlinearities in photonic devices and
controllable drive-induced interactions in ultracold quantum matter.
We introduce a family of SO($n$)-symmetric spin chains which generalize the
transverse-field Ising chain for $n=1$. These spin chains are defined with
Gamma matrices and can be exactly solved by mapping to $n$ species of itinerant
Majorana fermions coupled to a static $\mathbb{Z}_2$ gauge field. Their phase
diagrams include a critical point described by the $\mathrm{Spin}(n)_{1}$
conformal field theory as well as two distinct gapped phases. We show that one
of the gapped phases is a trivial phase and the other realizes a
symmetry-protected topological phase when $n \geq 2$. These two gapped phases
are proved to be related to each other by a Kramers-Wannier duality.
Furthermore, other elegant structures in the transverse-field Ising chain, such
as the infinite-dimensional Onsager algebra, also carry over to our models.
The spatial structure of the inhomogeneity in a disordered medium determines
how waves scatter and propagate in it. We present a theoretical model of how
the Fourier components of the disorder control wave scattering in a
two-dimensional disordered medium, by analyzing the disordered Green's function
for scalar waves. By selecting a set of Fourier components with the appropriate
wave vectors, we can enhance or suppress wave scattering to filter out unwanted
waves and allow the robust coherent transmission of waves at specific angles
and wavelengths through the disordered medium. Based on this principle, we
propose an approach for creating selective transparency, band gaps and
anisotropy in disordered media. This approach is validated by direct numerical
simulations of coherent wave transmission over a wide range of incident angles
and frequencies and can be experimentally realized in disordered photonic
crystals. Our approach, which requires neither nontrivial topological wave
properties nor a non-Hermitian medium, creates new opportunities for exploring
a broad range of wave phenomena in disordered systems.
We consider perturbations of 2D CFTs by multiple relevant operators. The
massive phases of such perturbations can be labeled by conformal boundary
conditions. Cardy's variational ansatz approximates the vacuum state of the
perturbed theory by a smeared conformal boundary state. In this paper we study
the limitations and propose generalisations of this ansatz using both analytic
and numerical insights based on TCSA. In particular we analyse the stability of
Cardy's ansatz states with respect to boundary relevant perturbations using
bulk-boundary OPE coefficients. We show that certain transitions between the
massive phases arise from a pair of boundary RG flows. The RG flows start from
the conformal boundary on the transition surface and end on those that lie on
the two sides of it. As an example we work out the details of the phase diagram
for the Ising field theory and for the tricritical Ising model perturbed by the
leading thermal and magnetic fields. For the latter we find a pair of novel
transition lines that correspond to pairs of RG flows. Although the mass gap
remains finite at the transition lines, several one-point functions change
their behaviour. We discuss how these lines fit into the standard phase diagram
of the tricritical Ising model. We show that each line extends to a
two-dimensional surface $\xi_{\sigma,c}$ in a three coupling space when we add
perturbations by the subleading magnetic field. Close to this surface we locate
symmetry breaking critical lines leading to the critical Ising model. Near the
critical lines we find first order phase transition lines describing two-phase
coexistence regions as predicted in Landau theory. The surface $\xi_{\sigma,c}$
is determined from the CFT data using Cardy's ansatz and its properties are
checked using TCSA numerics.
This article reports a comparative study of bulk and surface properties in
the transition metal dichalcogenide 1T-TaS$_2$. When heating the sample, the
surface displays an intermediate insulating phase that persists for $\sim 10$ K
on top of a metallic bulk. The weaker screening of Coulomb repulsion and
stiffer Charge Density Wave (CDW) explain such resilience of a correlated
insulator in the topmost layers. Both time resolved ARPES and transient
reflectivity are employed to investigate the dynamics of electrons and CDW
collective motion. It follows that the amplitude mode is always stiffer at the
surface and displays variable coupling to the Mott-Peierls band, stronger in
the low temperature phase and weaker in the intermediate one.
Analytical results obtained within Landau-Ginzburg-Devonshire approach and
effective media models, predict that the synergy of size effects and Vegard
stresses can significantly enhance the electrocaloric cooling (up to 7 times)
of the BaTiO3 nanoparticles in comparison with a bulk BaTiO3. To compare with
the considered effective media models, we measured the capacitance-voltage and
current-voltage characteristics of the dense nanocomposites consisting of
(28-35) vol.% BaTiO3 nanoparticles incorporated in organic polymers and
determined experimentally the effective dielectric permittivity and losses of
the composites. Generalizing obtained analytical results, various ferroelectric
nanoparticles spontaneously stressed by elastic defects, such as oxygen
vacancies or any other elastic dipoles, which create a strong chemical
pressure, can cause the giant electrocaloric response of dense ferroelectric
nanocomposites. We have shown that the advantages of the studied lead-free
dense nanocomposites are the good tunability of electrocaloric cooling
temperature due to the size effects in ferroelectric nanoparticles and the easy
control of the high electrocaloric cooling by electric fields. This makes the
dense ferroelectric nanocomposites promising for cooling of conventional and
innovative electronic elements, such as FETs with high-temperature
superconductor channels.
The interplay of topology and disorder in non-equilibrium quantum systems is
an intriguing subject. Here, we look for a suitable platform that enables an
in-depth exploration of the topic. To this end, we analyze the topological and
localization properties of a dimerized one-dimensional Kitaev chain in the
presence of an onsite quasiperiodic potential whose amplitude is modulated
periodically in time. The topological features have been explored via computing
the real-space winding numbers corresponding to both the Majorana zero and the
$\pi$ energy modes. We enumerate the scenario at different driving frequencies.
In particular, at either low or intermediate frequency regimes, the phase
diagram concerning the zero mode involves two distinct phase transitions, one
from a topologically trivial to a non-trivial phase, and another from a
topological phase to an Anderson localized phase. On the other hand, the study
of the $\pi$ modes reveals the emergence of a unique topological phase, where
both the bulk and the edge modes are fully localized, which may be called as
the Floquet topological Anderson phase. Moreover, while the low and
high-frequency regimes host extended and localized states, respectively, at
intermediate frequencies, the states can be extended, critical (or
multifractal), and localized. Inverse and normalized participation ratios are
used as tools to characterize the extended and the localized states. Further,
the intermediate frequency regime is thoroughly enumerated via a finite-size
scaling analysis of the fractal dimension.
The nanoscale, coherent topologically close-packed (TCP) precipitate plates
in magnesium alloys are found beneficial to the strength and creep resistance
of alloys. However, the conventional trial-and-error method is too
time-consuming and costly, which impedes the application of TCP precipitates to
hcp-based metallic alloys. Here, we systematically screen the potential
coherent TCP precipitate plates in the three most common hcp alloys, magnesium
(Mg), titanium (Ti), and zirconium (Zr) alloys, using an efficient
high-throughput screening methodology. Our findings indicate that the
hcp-to-TCP structural transformations readily occur in Mg alloys, leading to
abundant precipitation of TCP plates. However, hcp-Ti and Zr alloys exhibit a
preference for hcp-to-bcc structural transformations, rather than the in situ
precipitation of TCP plates. These screening results are largely consistent
with experimental observations. The insights gained contribute to a deeper
understanding of precipitation behavior in various hcp-based alloys at the
atomic level and provide insightful reference results for designing novel
alloys containing TCP phases.
The Benalcazar-Bernevig-Hughes (BBH) quadrupole insulator model is a
cornerstone model for higher-order topological phases. It requires \pi flux
threading through each plaquette of the two-dimensional Su-Schrieffer-Heeger
model. Recent studies show that particular \pi-flux patterns can modify the
fundamental Brillouin zone from the shape of a torus to a Klein-bottle with
emerging topological phases. By designing different \pi-flux patterns, we
propose two types of Klein-bottle BBH models. These models show rich
topological phases including Klein-bottle quadrupole insulators and Dirac
semimetals. The phase with nontrivial Klein-bottle topology shows twined edge
modes at open boundaries. These edge modes can further support second-order
topology yielding a quadrupole insulator. Remarkably, both models are robust
against flux perturbations. Moreover, we show that different \pi-flux patterns
dramatically affect the phase diagram of the Klein-bottle BBH models. Going
beyond the original BBH model, Dirac semimetal phases emerge in Klein-bottle
BBH models featured by the coexistence of twined edge modes and bulk Dirac
points.

Date of feed: Tue, 19 Sep 2023 00:30:00 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Antiferromagnetic $\mathbb{Z}_2$ topological metal near the metal-insulator transition in MnS$_2$. (arXiv:2309.08712v1 [cond-mat.mtrl-sci])**

Vsevolod Ivanov, Xiangang Wan, Sergey Y. Savrasov

**2D Ambipolar Vertical Transistors as Control-free Reconfigurable Logic Devices. (arXiv:2309.08746v1 [physics.app-ph])**

Zijing Zhao, Shaloo Rakheja, Wenjuan Zhu

**Surface barrier effect as evidence of chiral soliton lattice formation in chiral dichalcogenide CrTa$_{3}$S$_{6}$ crystals. (arXiv:2309.08750v1 [cond-mat.mtrl-sci])**

K. Mizutani, J. Jiang, K. Monden, Y. Shimamoto, Y. Kousaka, Y. Togawa

**Physics of the Majorana-superconducting qubit hybrids. (arXiv:2309.08758v1 [cond-mat.mes-hall])**

D. B. Karki, K. A. Matveev, Ivar Martin

**Topological spin Hall effect in antiferromagnets. (arXiv:2309.08763v1 [cond-mat.mes-hall])**

Amir N. Zarezad, Józef Barnaś, Anna Dyrdał, Alireza Qaiumzadeh

**Engineering chiral spin interactions with Rydberg atoms. (arXiv:2309.08795v1 [physics.atom-ph])**

Elena Kuznetsova, S. I. Mistakidis, Seth T. Rittenhouse, Susanne F. Yelin, H. R. Sadeghpour

**Investigation of the Anomalous and Topological Hall Effects in Layered Monoclinic Ferromagnet Cr$_{2.76}$Te$_4$. (arXiv:2309.08898v1 [cond-mat.mtrl-sci])**

Shubham Purwar, Achintya Low, Anumita Bose, Awadhesh Narayan, S. Thirupathaiah

**Diminishing Mott gap by doping electrons through depositing one monolayer thin film of Rb on Ca$_{2}$CuO$_{2}$Cl$_{2}$. (arXiv:2309.08921v1 [cond-mat.supr-con])**

Han Li, Zhaohui Wang, Shengtai Fan, Huazhou Li, Huan Yang, Hai-Hu Wen

**Emergent phases in graphene flat bands. (arXiv:2309.08938v1 [cond-mat.mes-hall])**

Saisab Bhowmik, Arindam Ghosh, U. Chandni

**Transverse structural modulation in nematic SrAl$_4$ and elucidation of its origin in the BaAl$_4$ family of compounds. (arXiv:2309.08959v1 [cond-mat.str-el])**

Sitaram Ramakrishnan, Surya Rohith Kotla, Hanqi Pi, Bishal Baran Maity, Jia Chen, Jin-Ke Bao, Zhaopeng Guo, Masaki Kado, Harshit Agarwal, Claudio Eisele, Minoru Nohara, Leila Noohinejad, Hongming Weng, Srinivasan Ramakrishnan, Arumugam Thamizhavel, Sander van Smaalen

**Operando Insights on the Degradation Mechanisms of Rhenium doped Molybdenum Disulfide Nanocatalysts for Electrolyzer Applications. (arXiv:2309.08977v1 [physics.app-ph])**

Raquel Aymerich-Armengol, Miquel Vega-Paredes, Andrea Mingers, Luca Camuti, Jeeung Kim, Jeongwook Bae, Ilias Efthimiopoulos, Rajib Sahu, Filip Podjaski, Martin Rabe, Christina Scheu, Joohyun Lim, Siyuan Zhang

**Electronic and Topological Properties of a Topological Insulator Thin Film Sandwiched between Ferromagnetic Insulators. (arXiv:2309.09014v1 [cond-mat.mes-hall])**

Piotr Pigoń, Anna Dyrdał

**Dynamical Phonons Following Electron Relaxation Stages in Photo-excited Graphene. (arXiv:2309.09076v1 [cond-mat.mtrl-sci])**

Nina Girotto, Dino Novko

**Visualizing the Zhang-Rice singlet, molecular orbitals and pair formation in cuprate. (arXiv:2309.09260v1 [cond-mat.supr-con])**

Shusen Ye, Jianfa Zhao, Zhiheng Yao, Sixuan Chen, Zehao Dong, Xintong Li, Luchuan Shi, Qingqing Liu, Changqing Jin, Yayu Wang

**Relativistic Douglas-Kroll-Hess Calculations of Hyperfine Interactions within First Principles Multireference Methods. (arXiv:2309.09349v1 [cond-mat.mtrl-sci])**

Aleksander L. Wysocki, Kyungwha Park

**"Smoking gun" signatures of topological milestones in trivial materials by measurement fine-tuning and data postselection. (arXiv:2309.09368v1 [cond-mat.mes-hall])**

S.M. Frolov, P. Zhang, B. Zhang, Y. Jiang, S. Byard, S.R. Mudi, J. Chen, A.-H. Chen, M. Hocevar, M. Gupta, C. Riggert, V.S. Pribiag

**Towards construction of analog solver of Schroedinger and Ginzburg-Landau equation based on Long Line. (arXiv:2309.09406v1 [cond-mat.mes-hall])**

Lukasz Pluszynski, Krzysztof Pomorski

**Anomalous transport of small polarons arises from transient lattice relaxation or immovable boundaries. (arXiv:2309.09509v1 [physics.chem-ph])**

Srijan Bhattacharyya, Thomas Sayer, Andrés Montoya-Castillo

**Extrinsic nonlinear Kerr rotation in topological materials under a magnetic field. (arXiv:2309.09512v1 [cond-mat.mes-hall])**

Shuang Wu, Zaiyao Fei, Zeyuan Sun, Yangfan Yi, Wei Xia, Dayu Yan, Yanfeng Guo, Youguo Shi, Jiaqiang Yan, David H. Cobden, Wei-Tao Liu, Xiaodong Xu, Shiwei Wu

**Altermagnetic Tunnel Junctions of RuO$_2$/TiO$_2$/CrO$_2$. (arXiv:2309.09561v1 [cond-mat.mtrl-sci])**

Boyuan Chi, Leina Jiang, Yu Zhu, Guoqiang Yu, Caihua Wan, Jia Zhang, Xiufeng Han

**Consequences of the gauging of Weyl symmetry and the two-dimensional conformal anomaly. (arXiv:2309.09598v1 [hep-th])**

Omar Zanusso

**Observation of an exceptional nexus in ultracold atoms. (arXiv:2309.09625v1 [quant-ph])**

Chenhao Wang, Nan Li, Jin Xie, Cong Ding, Zhonghua Ji, Liantuan Xiao, Suotang Jia, Ying Hu, Yanting Zhao

**Strong Coupling of Two-Dimensional Excitons and Plasmonic Photonic Crystals: Microscopic Theory Reveals Triplet Spectra. (arXiv:2309.09673v1 [cond-mat.mes-hall])**

Lara Greten, Robert Salzwedel, Tobias Göde, David Greten, Stephanie Reich, Stephen Hughes, Malte Selig, Andreas Knorr

**Modified Landauer's principle: How much can the Maxwell's demon gain by using general system-environment quantum state?. (arXiv:2309.09678v1 [quant-ph])**

Sayan Mondal, Aparajita Bhattacharyya, Ahana Ghoshal, Ujjwal Sen

**Non-Hermitian physics and topological phenomena in convective thermal metamaterials. (arXiv:2309.09681v1 [physics.app-ph])**

Zhoufei Liu

**Integration of Quantum, Statistical, and Irreversible Thermodynamics in A Coherent Framework. (arXiv:2309.09823v1 [cond-mat.stat-mech])**

Zi-Kui Liu

**Direct topological insulator transitions in three dimensions are destabilized by non-perturbative effects of disorder. (arXiv:2309.09857v1 [cond-mat.dis-nn])**

Yixing Fu, Justin H. Wilson, David A. Huse, J. H. Pixley

**Topological edge and corner states in Bi fractals on InSb. (arXiv:2309.09860v1 [cond-mat.mes-hall])**

R. Cañellas Núñez, Chen Liu, R. Arouca, L. Eek, Guanyong Wang, Yin Yin, Dandan Guan, Yaoyi Li, Shiyong Wang, Hao Zheng, Canhua Liu, Jinfeng Jia, C. Morais Smith

**Vacuum cleaving of superconducting niobium tips to optimize noise filtering and with adjustable gap size for scanning tunneling microscopy. (arXiv:2309.09903v1 [cond-mat.supr-con])**

Carolina A. Marques, Aleš Cahlík, Berk Zengin, Tohru Kurosawa, Fabian D. Natterer

**Quantum optimization within lattice gauge theory model on a quantum simulator. (arXiv:2105.07134v4 [quant-ph] UPDATED)**

Zheng Yan, Zheng Zhou, Yan-Hua Zhou, Yan-Cheng Wang, Xingze Qiu, Zi Yang Meng, Xue-Feng Zhang

**Topology, criticality, and dynamically generated qubits in a stochastic measurement-only Kitaev model. (arXiv:2207.07096v2 [quant-ph] UPDATED)**

Adithya Sriram, Tibor Rakovszky, Vedika Khemani, Matteo Ippoliti

**Non-reciprocal forces and exceptional phase transitions in metric and topological flocks. (arXiv:2208.09461v2 [cond-mat.soft] UPDATED)**

Charles Packard, Daniel M. Sussman

**Shortest Route to Non-Abelian Topological Order on a Quantum Processor. (arXiv:2209.03964v2 [quant-ph] UPDATED)**

Nathanan Tantivasadakarn, Ruben Verresen, Ashvin Vishwanath

**Deep learning extraction of band structure parameters from density of states: a case study on trilayer graphene. (arXiv:2210.06310v2 [cond-mat.mes-hall] UPDATED)**

Paul Henderson, Areg Ghazaryan, Alexander A. Zibrov, Andrea F. Young, Maksym Serbyn

**Current Noise of Hydrodynamic Electrons. (arXiv:2211.01366v3 [cond-mat.mes-hall] UPDATED)**

Aaron Hui, Brian Skinner

**Phase diagrams of spin-$S$ Kitaev ladders. (arXiv:2211.02754v3 [cond-mat.str-el] UPDATED)**

Yushao Chen, Yin-Chen He, Aaron Szasz

**Efficient and quantum-adaptive machine learning with fermion neural networks. (arXiv:2211.05793v3 [quant-ph] UPDATED)**

Pei-Lin Zheng, Jia-Bao Wang, Yi Zhang

**Kondo Phase in Twisted Bilayer Graphene -- A Unified Theory for Distinct Experiments. (arXiv:2301.04661v3 [cond-mat.str-el] UPDATED)**

Geng-Dong Zhou, Yi-Jie Wang, Ninghua Tong, Zhi-Da Song

**Non-Hermitian boost deformation. (arXiv:2301.05973v2 [cond-mat.str-el] UPDATED)**

Taozhi Guo, Kohei Kawabata, Ryota Nakai, Shinsei Ryu

**Coherent Charge Oscillations in a Bilayer Graphene Double Quantum Dot. (arXiv:2303.10119v2 [cond-mat.mes-hall] UPDATED)**

Katrin Hecker, Luca Banszerus, Aaron Schäpers, Samuel Möller, Anton Peters, Eike Icking, Kenji Watanabe, Takashi Taniguchi, Christian Volk, Christoph Stampfer

**Orientational dynamics and rheology of active suspensions in weakly viscoelastic flows. (arXiv:2303.15241v3 [cond-mat.soft] UPDATED)**

Akash Choudhary, Sankalp Nambiar, Holger Stark

**Floquet-engineered nonlinearities and controllable pair-hopping processes: From optical Kerr cavities to correlated quantum matter. (arXiv:2304.05865v2 [cond-mat.quant-gas] UPDATED)**

Nathan Goldman, Oriana K. Diessel, Luca Barbiero, Maximilian Prüfer, Marco Di Liberto, Lucila Peralta Gavensky

**Symmetry-protected topological phases, conformal criticalities, and duality in exactly solvable SO($n$) spin chains. (arXiv:2305.03398v2 [cond-mat.str-el] UPDATED)**

Sreejith Chulliparambil, Hua-Chen Zhang, Hong-Hao Tu

**Control of wave scattering for robust coherent transmission in a disordered medium. (arXiv:2305.07831v2 [physics.optics] UPDATED)**

Zhun-Yong Ong

**RG boundaries and Cardy's variational ansatz for multiple perturbations. (arXiv:2306.13719v2 [hep-th] UPDATED)**

Anatoly Konechny

**Dynamics of electronic states in the Intermediate phase of 1T-TaS$_2$. (arXiv:2307.06444v2 [cond-mat.str-el] UPDATED)**

Jingwei Dong, Weiyan Qi, Dongbin Shin, Laurent Cario, Zhesheng Chen, Romain Grasset, Davide Boschetto, Mateusz Weis, Pierrick Lample, Ernest Pastor, Tobias Ritschel, Marino Marsi, Amina Taleb, Noejung Park, Angel Rubio, Evangelos Papalazarou, Luca Perfetti

**Size-Induced High Electrocaloric Response of Dense Ferroelectric Nanocomposites. (arXiv:2309.03187v2 [physics.app-ph] UPDATED)**

Anna N. Morozovska, Oleksandr S. Pylypchuk, Serhii Ivanchenko, Eugene A. Eliseev, Hanna V. Shevliakova, Lubomir Korolevich, Lesya P. Yurchenko, Oleksandr V. Shyrokov, Nicholas V. Morozovsky, Vladimir N. Poroshin, Zdravko Kutnjak, Victor V. Vainberg

**Floquet analysis of a driven Kitaev chain in presence of a quasiperiodic potential. (arXiv:2309.03836v2 [cond-mat.mes-hall] UPDATED)**

Koustav Roy, Shilpi Roy, Saurabh Basu

**High-throughput screening of coherent topologically close-packed precipitates in hexagonal close-packed metallic systems. (arXiv:2309.04822v2 [cond-mat.mtrl-sci] UPDATED)**

Junyuan Bai, Xueyong Pang, Gaowu Qin

**Klein-bottle quadrupole insulators and Dirac semimetals. (arXiv:2309.07784v2 [cond-mat.mes-hall] UPDATED)**

Chang-An Li, Junsong Sun, Song-Bo Zhang, Huaiming Guo, Björn Trauzettel

Found 20 papers in prb The topological surface state arising from the nontrivial topology of the bulk band structure has attracted a wide range of interest. Compared with electrons, the magnon propagation in magnetic materials can be more intuitively reflected in the spin precession and generate different effects. Using m… We study the Wannier-Stark (WS) localization in one-dimensional amplitude-chirped lattices with the $j\mathrm{th}$ on-site potential modulated by a function $Fjcos(2παj)$, where $F$ is the external field with a period determined by $α=p/q$ ($p$ and $q$ are coprime integers). In the Hermitian (or non… We propose to realize two-dimensional superstructures of chiral topological superconductors based on marginally twisted bilayers of transition metal dichalcogenides in proximity to a conventional $s$-wave superconductor. Majorana fermions arise at the domain boundaries of the $AB$ and ${A}^{′}{B}^{… We model the influence of an in-plane magnetic field on the orbital motion of electrons in rhombohedral graphene multilayers. For zero field, the low-energy band structure includes a pair of flat bands near zero energy, which are localized on the surface layers of a finite thin film. For finite fiel… The Thouless charge pumping protocol provides an effective route for realizing topological particle transport. To date, the first-order and higher-order topological pumps, exhibiting transitions of edge-bulk-edge and corner-bulk-corner states, respectively, are observed in a variety of experimental … Van der Waals heterostructures consisting of Bernal bilayer graphene (BLG) and hexagonal boron nitride (hBN) are investigated. By performing first-principles calculations, we capture the essential BLG band structure features for several stacking and encapsulation scenarios. A low-energy model Hamilt… Topological surface states of Bi-doped ${\mathrm{PbSb}}_{2}{\mathrm{Te}}_{4} [\mathrm{Pb}{({\mathrm{Bi}}_{0.20}{\mathrm{Sb}}_{0.80})}_{2}{\mathrm{Te}}_{4}]$ are investigated through analyses of quasiparticle interference (QPI) patterns observed by scanning tunneling microscopy. Interpretation of the… The $\mathrm{Ni}{(\mathrm{NCS})}_{2}{(\mathrm{pyzdo})}_{2}$ coordination polymer is found to be an $S=1$ spatially anisotropic square lattice with easy-axis single-ion anisotropy. This conclusion is based upon considering in concert the experimental probes x-ray diffraction, magnetic susceptibility,… We present experimental and theoretical studies of the magneto-optical properties of $n$-type ${\mathrm{InAs}}_{x}{\mathrm{P}}_{1−x}$ films in ultrahigh magnetic fields at room temperature. We compare Landau level and band structure calculations with observed cyclotron resonance (CR) measurements an… We use scanning tunneling microscopy to study the temperature evolution of the atomic-scale properties of the nearly commensurate charge density wave (NC-CDW) state of the low-dimensional material $1T\text{−}{\mathrm{TaS}}_{2}$. Our measurements at 203, 300, and 354 K, roughly spanning the temperatu… Scanning tunneling microscopy (STM) and transport measurements have been performed to investigate the electronic structure and its temperature dependence in heavily Sr and Na codoped PbTe, which is recognized as one of the most promising thermoelectric (TE) materials. Our main findings are as follow… The cubic halides K${}_{2}$OsCl${}_{6}$, K${}_{2}$OsBr${}_{6}$, and Rb${}_{2}$OsBr${}_{6}$ are found to be excellent realizations of spin-orbit-entangled nonmagnetic $J$=0 compounds in the intermediate coupling regime. The two complementary techniques of resonant inelastic x-ray scattering and optical spectroscopy allow the authors to draw a comprehensive picture of the electronic excitations and to assess the electronic structure. The accurate set of electronic parameters such as spin-orbit coupling, Hund’s coupling, crystal-field splitting, Mott gap, and charge-transfer energy will serve as a solid reference for future studies on Os compounds. Unlocking the full potential of nanophotonic devices involves the engineering of their intrinsic optical properties. Here, the authors investigate a quantum theory that treats the interaction between quantum-confined plasmons and optical phonons in semiconductors. This theory allows computation of the optical response beyond the conventional Drude-Lorentz model. In particular, it predicts new effects, such as an oscillator-strength transfer mechanism between phonons and dark plasmon modes. Bidimensional crystals display unique properties of both fundamental and applied interest, with a good part of these properties being related to the topological aspects of 2D materials. Discrete quantum walks models, commonly used in the area of quantum information, are mathematical constructions in… Superconductivity in V-based kagome metals has recently raised great interest as they exhibit the competing ground states associated with the flat bands and topological electronic structures. Here we report the discovery of superconductivity in ${\mathrm{Ta}}_{2}{\mathrm{V}}_{3.1}{\mathrm{Si}}_{0.9}… A single material achieving multiple topological phases can provide potential application for topological spintronics, whereas the candidate materials are very limited. Here, we report on the structure, physical properties, and possible emergence of multiple topological phases in the recently discov… Thermoelectric effects are highly sensitive to the asymmetry in the density of states around the Fermi energy and can be exploited as probes of the electronic structure. We experimentally study thermopower in high-quality monolayer graphene, within heterostructures consisting of complete hBN encapsu… Over 25 years ago, Marzari and Vanderbilt introduced maximally localized Wannier functions (MLWFs), the most compact real-space representation of electronic wavefunctions in solids. Here, the authors put forward a generalization of this scheme for excitons, correlated electron-hole pairs that dictate the optical properties of materials. Much as MLWFs have transformed our understanding of electrons in solids, from chemical bonding to polarization to topology, these maximally localized exciton Wannier functions should deepen our understanding of photophysical and excited-state phenomena of materials. Pyrochlore ${\mathrm{Yb}}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}$ has gained significant attention due to the low-temperature geometrical frustration induced unusual magnetic phase. Most experimental studies on ${\mathrm{Yb}}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}$ have been performed on polycrystalline…

Date of feed: Tue, 19 Sep 2023 03:17:27 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Spin Nernst effect and spatiotemporal dynamic simulation of topological magnons in the antiferromagnet ${\mathrm{Cu}}_{3}{\mathrm{TeO}}_{6}$**

Yizhi Liu, Chen Fang, Shaoqin Jiang, Yuan Li, and Limei Xu

Author(s): Yizhi Liu, Chen Fang, Shaoqin Jiang, Yuan Li, and Limei Xu

[Phys. Rev. B 108, 094427] Published Mon Sep 18, 2023

**Wannier-Stark localization in one-dimensional amplitude-chirped lattices**

Qi-Bo Zeng, Bo Hou, and Han Xiao

Author(s): Qi-Bo Zeng, Bo Hou, and Han Xiao

[Phys. Rev. B 108, 104207] Published Mon Sep 18, 2023

**Majorana fermions on the domain wall of marginally twisted bilayer of transition metal dichalcogenides**

Richang Huang, Dapeng Yu, and Wang Yao

Author(s): Richang Huang, Dapeng Yu, and Wang Yao

[Phys. Rev. B 108, 115307] Published Mon Sep 18, 2023

**Solitons induced by an in-plane magnetic field in rhombohedral multilayer graphene**

Max Tymczyszyn, Peter H. Cross, and Edward McCann

Author(s): Max Tymczyszyn, Peter H. Cross, and Edward McCann

[Phys. Rev. B 108, 115425] Published Mon Sep 18, 2023

**Observation of hybrid-order topological pump in a Kekulé-textured graphene lattice**

Tianzhi Xia, Yuzeng Li, Qicheng Zhang, Xiying Fan, Meng Xiao, and Chunyin Qiu

Author(s): Tianzhi Xia, Yuzeng Li, Qicheng Zhang, Xiying Fan, Meng Xiao, and Chunyin Qiu

[Phys. Rev. B 108, 125125] Published Mon Sep 18, 2023

**Electronic and spin-orbit properties of $h$-BN encapsulated bilayer graphene**

Klaus Zollner, Eike Icking, and Jaroslav Fabian

Author(s): Klaus Zollner, Eike Icking, and Jaroslav Fabian

[Phys. Rev. B 108, 125126] Published Mon Sep 18, 2023

**Topological surface states hybridized with bulk states of Bi-doped ${\mathrm{PbSb}}_{2}{\mathrm{Te}}_{4}$ revealed in quasiparticle interference**

Yuya Hattori, Keisuke Sagisaka, Shunsuke Yoshizawa, Yuki Tokumoto, and Keiichi Edagawa

Author(s): Yuya Hattori, Keisuke Sagisaka, Shunsuke Yoshizawa, Yuki Tokumoto, and Keiichi Edagawa

[Phys. Rev. B 108, L121408] Published Mon Sep 18, 2023

**Spatially anisotropic $S=1$ square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine-$n,{n}^{′}$-dioxide coordination polymer**

Jamie L. Manson, Daniel M. Pajerowski, Jeffrey M. Donovan, Brendan Twamley, Paul A. Goddard, Roger Johnson, Jesper Bendix, John Singleton, Tom Lancaster, Stephen J. Blundell, Jacek Herbrych, Peter J. Baker, Andrew J. Steele, Francis L. Pratt, Isabel Franke-Chaudet, Ross D. McDonald, Alex Plonczak, and Pascal Manuel

Author(s): Jamie L. Manson, Daniel M. Pajerowski, Jeffrey M. Donovan, Brendan Twamley, Paul A. Goddard, Roger Johnson, Jesper Bendix, John Singleton, Tom Lancaster, Stephen J. Blundell, Jacek Herbrych, Peter J. Baker, Andrew J. Steele, Francis L. Pratt, Isabel Franke-Chaudet, Ross D. McDonald, Alex Plonczak, and Pascal Manuel

[Phys. Rev. B 108, 094425] Published Thu Sep 14, 2023

**Anharmonicity and structural phase transition in the Mott insulator ${\mathrm{Cu}}_{2}{\mathrm{P}}_{2}{\mathrm{O}}_{7}$**

Svitlana Pastukh, Paweł T. Jochym, Oleksandr Pastukh, Jan Łażewski, Dominik Legut, and Przemysław Piekarz

Author(s): Svitlana Pastukh, Paweł T. Jochym, Oleksandr Pastukh, Jan Łażewski, Dominik Legut, and Przemysław Piekarz*Ab initio* investigations of the structural, electronic, and dynamical properties of the high-temperature $β$ phase of copper pyrophosphate were performed using density functional theory. The electronic band structure shows the Mott insulating state due to electron correlations in the copper ions. By…

[Phys. Rev. B 108, 104104] Published Thu Sep 14, 2023

**Band structure, $g$-factor, and spin relaxation in $n$-type InAsP alloys**

Sunil K. Thapa, Rathsara R. H. H. Mudiyanselage, Thalya Paleologu, Sukgeun Choi, Zhuo Yang, Y. Kohama, Y. H. Matsuda, Joseph Spencer, Brenden A. Magill, Chris J. Palmstrøm, Christopher J. Stanton, and Giti A. Khodaparast

Author(s): Sunil K. Thapa, Rathsara R. H. H. Mudiyanselage, Thalya Paleologu, Sukgeun Choi, Zhuo Yang, Y. Kohama, Y. H. Matsuda, Joseph Spencer, Brenden A. Magill, Chris J. Palmstrøm, Christopher J. Stanton, and Giti A. Khodaparast

[Phys. Rev. B 108, 115202] Published Thu Sep 14, 2023

**Temperature evolution of domains and intradomain chirality in $1T−{\mathrm{TaS}}_{2}$**

Boning Yu, Ghilles Ainouche, Manoj Singh, Bishnu Sharma, James Huber, and Michael C. Boyer

Author(s): Boning Yu, Ghilles Ainouche, Manoj Singh, Bishnu Sharma, James Huber, and Michael C. Boyer

[Phys. Rev. B 108, 115421] Published Thu Sep 14, 2023

**Experimental verification of band convergence in Sr and Na codoped PbTe**

Yuya Hattori, Shunsuke Yoshizawa, Keisuke Sagisaka, Yuki Tokumoto, Keiichi Edagawa, Takako Konoike, Shinya Uji, and Taichi Terashima

Author(s): Yuya Hattori, Shunsuke Yoshizawa, Keisuke Sagisaka, Yuki Tokumoto, Keiichi Edagawa, Takako Konoike, Shinya Uji, and Taichi Terashima

[Phys. Rev. B 108, 125119] Published Thu Sep 14, 2023

**Electronic excitations in $5{d}^{4}\phantom{\rule{4pt}{0ex}}J=0\phantom{\rule{4pt}{0ex}}{\mathrm{Os}}^{4+}$ halides studied by resonant inelastic x-ray scattering and optical spectroscopy**

P. Warzanowski, M. Magnaterra, P. Stein, G. Schlicht, Q. Faure, Ch. J. Sahle, T. Lorenz, P. Becker, L. Bohatý, M. Moretti Sala, G. Monaco, P. H. M. van Loosdrecht, and M. Grüninger

Author(s): P. Warzanowski, M. Magnaterra, P. Stein, G. Schlicht, Q. Faure, Ch. J. Sahle, T. Lorenz, P. Becker, L. Bohatý, M. Moretti Sala, G. Monaco, P. H. M. van Loosdrecht, and M. Grüninger

[Phys. Rev. B 108, 125120] Published Thu Sep 14, 2023

**Phonon-mediated dark to bright plasmon conversion**

Benjamin Rousseaux, Yanko Todorov, Angela Vasanelli, and Carlo Sirtori

Author(s): Benjamin Rousseaux, Yanko Todorov, Angela Vasanelli, and Carlo Sirtori

[Phys. Rev. B 108, 125417] Published Thu Sep 14, 2023

**Scattering quantum walk framework for two-dimensional materials: The case of honeycomb lattice structures**

B. F. Venancio, H. S. Ghizoni, and M. G. E. da Luz

Author(s): B. F. Venancio, H. S. Ghizoni, and M. G. E. da Luz

[Phys. Rev. B 108, 094303] Published Wed Sep 13, 2023

**Vanadium-based superconductivity in the breathing kagome compound ${\mathrm{Ta}}_{2}{\mathrm{V}}_{3.1}{\mathrm{Si}}_{0.9}$**

HongXiong Liu, JingYu Yao, JianMin Shi, ZhiLong Yang, DaYu Yan, Yong Li, DaiHong Chen, Hai L. Feng, ShiLiang Li, ZhiJun Wang, and YouGuo Shi

Author(s): HongXiong Liu, JingYu Yao, JianMin Shi, ZhiLong Yang, DaYu Yan, Yong Li, DaiHong Chen, Hai L. Feng, ShiLiang Li, ZhiJun Wang, and YouGuo Shi

[Phys. Rev. B 108, 104504] Published Wed Sep 13, 2023

**Structure, physical properties, and magnetically tunable topological phases in the topological semimetal EuCuBi**

Xuhui Wang, Boxuan Li, Liqin Zhou, Long Chen, Yulong Wang, Yaling Yang, Ying Zhou, Ke Liao, Hongming Weng, and Gang Wang

Author(s): Xuhui Wang, Boxuan Li, Liqin Zhou, Long Chen, Yulong Wang, Yaling Yang, Ying Zhou, Ke Liao, Hongming Weng, and Gang Wang

[Phys. Rev. B 108, 115126] Published Wed Sep 13, 2023

**Thermopower in hBN/graphene/hBN superlattices**

Victor H. Guarochico-Moreira, Christopher R. Anderson, Vladimir Fal'ko, Irina V. Grigorieva, Endre Tóvári, Matthew Hamer, Roman Gorbachev, Song Liu, James H. Edgar, Alessandro Principi, Andrey V. Kretinin, and Ivan J. Vera-Marun

Author(s): Victor H. Guarochico-Moreira, Christopher R. Anderson, Vladimir Fal'ko, Irina V. Grigorieva, Endre Tóvári, Matthew Hamer, Roman Gorbachev, Song Liu, James H. Edgar, Alessandro Principi, Andrey V. Kretinin, and Ivan J. Vera-Marun

[Phys. Rev. B 108, 115418] Published Wed Sep 13, 2023

**Maximally localized exciton Wannier functions for solids**

Jonah B. Haber, Diana Y. Qiu, Felipe H. da Jornada, and Jeffrey B. Neaton

Author(s): Jonah B. Haber, Diana Y. Qiu, Felipe H. da Jornada, and Jeffrey B. Neaton

[Phys. Rev. B 108, 125118] Published Wed Sep 13, 2023

**Oxygen pressure modulated magnetism and magnetic anisotropy of epitaxial transparent ${\mathrm{Yb}}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}$ pyrochlore films**

Ming-Yuan Yan, Zhen-Tao Pang, Zhao-Cai Wang, Zhong-Nan Xi, Li- Da Chen, Xiao-Yu Zhang, Yu-Qi Wang, Ren-Kui Zheng, Yu Deng, and Shan-Tao Zhang

Author(s): Ming-Yuan Yan, Zhen-Tao Pang, Zhao-Cai Wang, Zhong-Nan Xi, Li- Da Chen, Xiao-Yu Zhang, Yu-Qi Wang, Ren-Kui Zheng, Yu Deng, and Shan-Tao Zhang

[Phys. Rev. B 108, 094105] Published Tue Sep 12, 2023

Found 20 papers in prl Control of stochastic systems is a challenging open problem in statistical physics, with a wealth of potential applications from biology to granulates. Unlike most cases investigated so far, we aim here at controlling a genuinely out-of-equilibrium system, the two dimensional active Brownian particl… Quantum key distribution (QKD) offers information-theoretic security based on the fundamental laws of physics. However, device imperfections, such as those in active modulators, may introduce side-channel leakage, thus compromising practical security. Attempts to remove active modulation, including … We investigate the spectral properties of buoyancy-driven bubbly flows. Using high-resolution numerical simulations and phenomenology of homogeneous turbulence, we identify the relevant energy transfer mechanisms. We find (a) at a high enough Galilei number (ratio of the buoyancy to viscous forces) … Here we present world-leading sensitivity to light ($<170\text{ }\text{ }\mathrm{MeV}$) dark matter (DM) using beam-dump experiments. Dark sector particles produced during pion decay at accelerator beam dumps can be detected via scattering in neutrino detectors. The decay of nuclei excited by the… This work explores the asymmetry of quantum steering in a setup using high-dimensional entanglement. We construct entangled states with the following properties: (i) one party (Bob) can never steer the state of the other party (Alice), considering the most general measurements, and (ii) Alice can st… A joint analysis of data from the CMB, weak lensing, peculiar velocities, and galaxy clustering, shows that an extension of the concordance cosmological model which includes the suppression of the growth of cosmic structure can alleviate two widely discussed cosmological tensions. $Q$-balls are nontopological solitons that coherently rotate in field space. We show that these coherent rotations can induce superradiance for scattering waves, thanks to the fact that the scattering involves two coupled modes. Despite the conservation of the particle number in the scattering, the … Magnetization measurements on graphene/hBN samples in a wide range of chemical potential reveal paramagnetism at saddle points of the moiré band structure. We investigate the exciton fine structure in atomically thin ${\mathrm{WSe}}_{2}$-based van der Waals heterostructures where the density of optical modes at the location of the semiconductor monolayer can be tuned. The energy splitting $\mathrm{Δ}$ between the bright and dark exciton is measured by … Topological phases play a crucial role in the fundamental physics of light-matter interaction and emerging applications of quantum technologies. However, the topological band theory of waveguide QED systems is known to break down, because the energy bands become disconnected. Here, we introduce a co… Observations of air-bubble mergers in water explain why dissolved salt slows this process and leads to foam. Fractionalization without time-reversal symmetry breaking is a long-sought-after goal in the study of correlated phenomena. The earlier proposal of correlated insulating states at $n±1/3$ filling in twisted bilayer graphene and recent experimental observations of insulating states at those fillings … Optical mirrors determine cavity properties by means of light reflection. Imperfect reflection gives rise to open cavities with photon loss. We study an open cavity made of atom-dimer mirrors with a tunable reflection spectrum. We find that the atomic cavity shows anti-$\mathcal{PT}$ symmetry. The a… In direct-drive inertial confinement fusion, the laser bandwidth reduces the laser imprinting seed of hydrodynamic instabilities. The impact of varying bandwidth on the performance of direct-drive DT-layered implosions was studied in targets with different hydrodynamic stability properties. The stab… When zeros appear in the Green’s function, as in strongly correlated systems, the invariant ${N}_{3}$ for the two-dimensional quantum anomalous Hall insulator does not necessarily encode a topological invariant of the ground state, in contrast to expectations. Oscillatory behavior is ubiquitous in out-of-equilibrium systems showing spatiotemporal pattern formation. Starting from a linear large-scale oscillatory instability—a conserved-Hopf instability—that naturally occurs in many active systems with two conservation laws, we derive a corresponding amplit… We study inhomogeneous $1+1$-dimensional quantum many-body systems described by Tomonaga-Luttinger-liquid theory with general propagation velocity and Luttinger parameter varying smoothly in space, equivalent to an inhomogeneous compactification radius for free boson conformal field theory. This mod… We investigate the $2^{3}{S}_{1}–2^{3}{P}_{J}$ ($J=0$, 1, 2) transitions in $^{6}{\mathrm{Li}}^{+}$ using the optical Ramsey technique and achieve the most precise values of the hyperfine splittings of the $2^{3}{S}_{1}$ and $2^{3}{P}_{J}$ states, with smallest uncertainty of about 10 kHz. The prese… Charge radii of neutron deficient $^{40}\mathrm{Sc}$ and $^{41}\mathrm{Sc}$ nuclei were determined using collinear laser spectroscopy. With the new data, the chain of Sc charge radii extends below the neutron magic number $N=20$ and shows a pronounced kink, generally taken as a signature of a shell … Skimmed supersonic beams provide intense, cold, collision-free samples of atoms and molecules and are one of the most widely used tools in atomic and molecular laser spectroscopy. High-resolution optical spectra are typically recorded in a perpendicular arrangement of laser and supersonic beams to m…

Date of feed: Tue, 19 Sep 2023 03:17:27 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Control of Active Brownian Particles: An Exact Solution**

Marco Baldovin, David Guéry-Odelin, and Emmanuel Trizac

Author(s): Marco Baldovin, David Guéry-Odelin, and Emmanuel Trizac

[Phys. Rev. Lett. 131, 118302] Published Thu Sep 14, 2023

**Proof-of-Principle Demonstration of Fully Passive Quantum Key Distribution**

Chengqiu Hu, Wenyuan Wang, Kai-Sum Chan, Zhenghan Yuan, and Hoi-Kwong Lo

Author(s): Chengqiu Hu, Wenyuan Wang, Kai-Sum Chan, Zhenghan Yuan, and Hoi-Kwong Lo

[Phys. Rev. Lett. 131, 110801] Published Wed Sep 13, 2023

**Kolmogorov Turbulence Coexists with Pseudo-Turbulence in Buoyancy-Driven Bubbly Flows**

Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar

Author(s): Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar

[Phys. Rev. Lett. 131, 114002] Published Wed Sep 13, 2023

**Probing the Dark Sector with Nuclear Transition Photons**

Bhaskar Dutta, Wei-Chih Huang, and Jayden L. Newstead

Author(s): Bhaskar Dutta, Wei-Chih Huang, and Jayden L. Newstead

[Phys. Rev. Lett. 131, 111801] Published Tue Sep 12, 2023

**Unlimited One-Way Steering**

Pavel Sekatski, Florian Giraud, Roope Uola, and Nicolas Brunner

Author(s): Pavel Sekatski, Florian Giraud, Roope Uola, and Nicolas Brunner

[Phys. Rev. Lett. 131, 110201] Published Mon Sep 11, 2023

**Evidence for Suppression of Structure Growth in the Concordance Cosmological Model**

Nhat-Minh Nguyen, Dragan Huterer, and Yuewei Wen

Author(s): Nhat-Minh Nguyen, Dragan Huterer, and Yuewei Wen

[Phys. Rev. Lett. 131, 111001] Published Mon Sep 11, 2023

**$Q$-Ball Superradiance**

Paul M. Saffin, Qi-Xin Xie, and Shuang-Yong Zhou

Author(s): Paul M. Saffin, Qi-Xin Xie, and Shuang-Yong Zhou

[Phys. Rev. Lett. 131, 111601] Published Mon Sep 11, 2023

**Paramagnetic Singularities of the Orbital Magnetism in Graphene with a Moiré Potential**

J. Vallejo Bustamante, R. Ribeiro-Palau, C. Fermon, M. Pannetier-Lecoeur, K. Watanabe, T. Tanigushi, R. Deblock, S. Guéron, M. Ferrier, J. N. Fuchs, G. Montambaux, F. Piéchon, and H. Bouchiat

Author(s): J. Vallejo Bustamante, R. Ribeiro-Palau, C. Fermon, M. Pannetier-Lecoeur, K. Watanabe, T. Tanigushi, R. Deblock, S. Guéron, M. Ferrier, J. N. Fuchs, G. Montambaux, F. Piéchon, and H. Bouchiat

[Phys. Rev. Lett. 131, 116201] Published Mon Sep 11, 2023

**Control of the Bright-Dark Exciton Splitting Using the Lamb Shift in a Two-Dimensional Semiconductor**

L. Ren (任磊), C. Robert, M. Glazov, M. Semina, T. Amand, L. Lombez, D. Lagarde, T. Taniguchi, K. Watanabe, and X. Marie

Author(s): L. Ren (任磊), C. Robert, M. Glazov, M. Semina, T. Amand, L. Lombez, D. Lagarde, T. Taniguchi, K. Watanabe, and X. Marie

[Phys. Rev. Lett. 131, 116901] Published Mon Sep 11, 2023

**Topological Inverse Band Theory in Waveguide Quantum Electrodynamics**

Yongguan Ke, Jiaxuan Huang, Wenjie Liu, Yuri Kivshar, and Chaohong Lee

Author(s): Yongguan Ke, Jiaxuan Huang, Wenjie Liu, Yuri Kivshar, and Chaohong Lee

[Phys. Rev. Lett. 131, 103604] Published Fri Sep 08, 2023

**Nanoscale Transport during Liquid Film Thinning Inhibits Bubble Coalescing Behavior in Electrolyte Solutions**

Bo Liu, Rogerio Manica, Qingxia Liu, Zhenghe Xu, Evert Klaseboer, and Qiang Yang

Author(s): Bo Liu, Rogerio Manica, Qingxia Liu, Zhenghe Xu, Evert Klaseboer, and Qiang Yang

[Phys. Rev. Lett. 131, 104003] Published Fri Sep 08, 2023

**Fractionalization in Fractional Correlated Insulating States at $n±1/3$ Filled Twisted Bilayer Graphene**

Dan Mao, Kevin Zhang, and Eun-Ah Kim

Author(s): Dan Mao, Kevin Zhang, and Eun-Ah Kim

[Phys. Rev. Lett. 131, 106801] Published Fri Sep 08, 2023

**Non-Hermitian Waveguide Cavity QED with Tunable Atomic Mirrors**

Wei Nie, Tao Shi, Yu-xi Liu, and Franco Nori

Author(s): Wei Nie, Tao Shi, Yu-xi Liu, and Franco Nori

[Phys. Rev. Lett. 131, 103602] Published Thu Sep 07, 2023

**Effects of Laser Bandwidth in Direct-Drive High-Performance DT-Layered Implosions on the OMEGA Laser**

D. Patel, J. P. Knauer, D. Cao, R. Betti, R. Nora, A. Shvydky, V. Gopalaswamy, A. Lees, S. Sampat, W. R. Donaldson, S. P. Regan, C. Stoeckl, C. J. Forrest, V. Yu. Glebov, D. R. Harding, M. J. Bonino, R. T. Janezic, D. Wasilewski, C. Fella, C. Shuldberg, J. Murray, D. Guzman, and B. Serrato

Author(s): D. Patel, J. P. Knauer, D. Cao, R. Betti, R. Nora, A. Shvydky, V. Gopalaswamy, A. Lees, S. Sampat, W. R. Donaldson, S. P. Regan, C. Stoeckl, C. J. Forrest, V. Yu. Glebov, D. R. Harding, M. J. Bonino, R. T. Janezic, D. Wasilewski, C. Fella, C. Shuldberg, J. Murray, D. Guzman, and B. Serrato

[Phys. Rev. Lett. 131, 105101] Published Thu Sep 07, 2023

**Failure of Topological Invariants in Strongly Correlated Matter**

Jinchao Zhao, Peizhi Mai, Barry Bradlyn, and Philip Phillips

Author(s): Jinchao Zhao, Peizhi Mai, Barry Bradlyn, and Philip Phillips

[Phys. Rev. Lett. 131, 106601] Published Thu Sep 07, 2023

**Nonreciprocal Cahn-Hilliard Model Emerges as a Universal Amplitude Equation**

Tobias Frohoff-Hülsmann and Uwe Thiele

Author(s): Tobias Frohoff-Hülsmann and Uwe Thiele

[Phys. Rev. Lett. 131, 107201] Published Thu Sep 07, 2023

**Exact Dirac–Bogoliubov–de Gennes Dynamics for Inhomogeneous Quantum Liquids**

Per Moosavi

Author(s): Per Moosavi

[Phys. Rev. Lett. 131, 100401] Published Wed Sep 06, 2023

**Measurement of Hyperfine Structure and the Zemach Radius in $^{6}{\mathrm{Li}}^{+}$ Using Optical Ramsey Technique**

Wei Sun, Pei-Pei Zhang, Peng-peng Zhou, Shao-long Chen, Zhi-qiang Zhou, Yao Huang, Xiao-Qiu Qi, Zong-Chao Yan, Ting-Yun Shi, G. W. F. Drake, Zhen-Xiang Zhong, Hua Guan, and Ke-lin Gao

Author(s): Wei Sun, Pei-Pei Zhang, Peng-peng Zhou, Shao-long Chen, Zhi-qiang Zhou, Yao Huang, Xiao-Qiu Qi, Zong-Chao Yan, Ting-Yun Shi, G. W. F. Drake, Zhen-Xiang Zhong, Hua Guan, and Ke-lin Gao

[Phys. Rev. Lett. 131, 103002] Published Wed Sep 06, 2023

**Surprising Charge-Radius Kink in the Sc Isotopes at $N=20$**

Kristian König, Stephan Fritzsche, Gaute Hagen, Jason D. Holt, Andrew Klose, Jeremy Lantis, Yuan Liu, Kei Minamisono, Takayuki Miyagi, Witold Nazarewicz, Thomas Papenbrock, Skyy V. Pineda, Robert Powel, and Paul-Gerhard Reinhard

Author(s): Kristian König, Stephan Fritzsche, Gaute Hagen, Jason D. Holt, Andrew Klose, Jeremy Lantis, Yuan Liu, Kei Minamisono, Takayuki Miyagi, Witold Nazarewicz, Thomas Papenbrock, Skyy V. Pineda, Robert Powel, and Paul-Gerhard Reinhard

[Phys. Rev. Lett. 131, 102501] Published Tue Sep 05, 2023

**Imaging-Assisted Single-Photon Doppler-Free Laser Spectroscopy and the Ionization Energy of Metastable Triplet Helium**

Gloria Clausen, Simon Scheidegger, Josef A. Agner, Hansjürg Schmutz, and Frédéric Merkt

Author(s): Gloria Clausen, Simon Scheidegger, Josef A. Agner, Hansjürg Schmutz, and Frédéric Merkt

[Phys. Rev. Lett. 131, 103001] Published Tue Sep 05, 2023

Found 21 papers in prx A theoretical analysis shows that a quantized charge polarization is well-defined in an insulator with a magnetic field and nonzero quantized Hall conductance, offering an inroad to a deeper understanding of crystalline topological phases. A new approach to generating quantum states of light most suitable for robust quantum computing draws on one of the most basic interactions in physics—the interaction between free electrons and photons. By describing network topology using an underlying geometric space, spatial Turing patterns can be found in the geometric embeddings of real networks. A multilevel qubit, or “qudit,” in a superconducting transmon shows high fidelity with several rudimentary algorithms, demonstrating the potential of a quantum computing architecture based on up to four levels rather than just two. Non-Abelian frame charges—mathematical entities used to describe certain topological properties—can also help understand band degeneracies in ordinary optical media. A simple modification to gravitational wave detector designs could allow future observatories to study the postmerger physics of a binary neutron star merger, to which current facilities are not sensitive. An analysis of a common approach to describing singular superconducting circuits quantum mechanically shows that it can lead to wrong predictions of the system’s dynamics. The wave function of fermions always acquires a minus sign when particles trade places. But an experiment shows that fermions confined to a quasi-one-dimensional space seem to circumvent this exchange symmetry. A new criterion for determining what materials can be fine-tuned to have very slowly moving electrons could lead to new platforms for studying novel phenomena arising from electron correlation. This high-resolution imaging study investigates a unique interlinked DNA found in certain single-cell parasites and reveals the genome’s unusual structure and topology at single-molecule resolution. Compressing the spectral content of quantum interference features in Schrödinger cat states to lower frequencies protects them against photon loss and preserves the most valuable characteristics that enable many quantum technologies. High-dimensional entanglement among photons allows for a roughly 10-km free-space quantum communication link in an urban environment that is robust to noise. A new protocol for measuring the state of a quantum simulator allows for the extraction of arbitrary physical information by relying on ancillary degrees of freedom and the natural randomness of quantum dynamics. Researchers have attained a 100-fold increase in the accuracy of a molecular clock that could serve as a terahertz-frequency standard and as a platform for investigating new physics. Fluctuations of quantum mechanical coherences in small, nonequilibrium systems can be described by a universal mathematical framework that draws from free probability theory, a tool that may aid understanding of noisy many-body quantum systems. A new methodology for analyzing the 3D distribution of galaxies borrows techniques from the study of colloids and other disordered materials. Segregation of chromosomes in dividing cells can be disrupted if the cells are constrained by their surroundings. The first demonstration of spiral magnetic order in a Weyl semimetal sets the stage for finding other materials with these structures, which could be used for high-density magnetic information storage. An anyon collider can distinguish between two types of anyons associated with two fractional quantum Hall states of a 2D electron gas, a step toward further investigation of anyons deemed useful for quantum computing. Experiments reveal previously unknown quantum dynamics of quasiparticles called attractive and repulsive polarons in an ultrathin semiconductor. A novel GaAs interferometer provides experimental evidence that strengthens the case for non-Abelian anyons, hypothetical quasiparticles highly sought for use in topologically protected quantum computing.

Date of feed: Tue, 19 Sep 2023 03:17:27 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Quantized Charge Polarization as a Many-Body Invariant in $(2+1)\mathrm{D}$ Crystalline Topological States and Hofstadter Butterflies**

Yuxuan Zhang, Naren Manjunath, Gautam Nambiar, and Maissam Barkeshli

Author(s): Yuxuan Zhang, Naren Manjunath, Gautam Nambiar, and Maissam Barkeshli

[Phys. Rev. X 13, 031005] Published Fri Jul 14, 2023

**Creation of Optical Cat and GKP States Using Shaped Free Electrons**

Raphael Dahan, Gefen Baranes, Alexey Gorlach, Ron Ruimy, Nicholas Rivera, and Ido Kaminer

Author(s): Raphael Dahan, Gefen Baranes, Alexey Gorlach, Ron Ruimy, Nicholas Rivera, and Ido Kaminer

[Phys. Rev. X 13, 031001] Published Thu Jul 06, 2023

**Emergence of Geometric Turing Patterns in Complex Networks**

Jasper van der Kolk, Guillermo García-Pérez, Nikos E. Kouvaris, M. Ángeles Serrano, and Marián Boguñá

Author(s): Jasper van der Kolk, Guillermo García-Pérez, Nikos E. Kouvaris, M. Ángeles Serrano, and Marián Boguñá

[Phys. Rev. X 13, 021038] Published Thu Jun 22, 2023

**Performing $\mathrm{SU}(d)$ Operations and Rudimentary Algorithms in a Superconducting Transmon Qudit for $d=3$ and $d=4$**

Pei Liu, Ruixia Wang, Jing-Ning Zhang, Yingshan Zhang, Xiaoxia Cai, Huikai Xu, Zhiyuan Li, Jiaxiu Han, Xuegang Li, Guangming Xue, Weiyang Liu, Li You, Yirong Jin, and Haifeng Yu

Author(s): Pei Liu, Ruixia Wang, Jing-Ning Zhang, Yingshan Zhang, Xiaoxia Cai, Huikai Xu, Zhiyuan Li, Jiaxiu Han, Xuegang Li, Guangming Xue, Weiyang Liu, Li You, Yirong Jin, and Haifeng Yu

[Phys. Rev. X 13, 021028] Published Tue May 23, 2023

**Non-Abelian Frame Charge Flow in Photonic Media**

Dongyang Wang, Ying Wu, Z. Q. Zhang, and C. T. Chan

Author(s): Dongyang Wang, Ying Wu, Z. Q. Zhang, and C. T. Chan

[Phys. Rev. X 13, 021024] Published Tue May 16, 2023

**Gravitational-Wave Detector for Postmerger Neutron Stars: Beyond the Quantum Loss Limit of the Fabry-Perot-Michelson Interferometer**

Teng Zhang, Huan Yang, Denis Martynov, Patricia Schmidt, and Haixing Miao

Author(s): Teng Zhang, Huan Yang, Denis Martynov, Patricia Schmidt, and Haixing Miao

[Phys. Rev. X 13, 021019] Published Thu May 04, 2023

**Consistent Quantization of Nearly Singular Superconducting Circuits**

Martin Rymarz and David P. DiVincenzo

Author(s): Martin Rymarz and David P. DiVincenzo

[Phys. Rev. X 13, 021017] Published Mon May 01, 2023

**Emergent $s$-Wave Interactions between Identical Fermions in Quasi-One-Dimensional Geometries**

Kenneth G. Jackson, Colin J. Dale, Jeff Maki, Kevin G. S. Xie, Ben A. Olsen, Denise J. M. Ahmed-Braun, Shizhong Zhang, and Joseph H. Thywissen

Author(s): Kenneth G. Jackson, Colin J. Dale, Jeff Maki, Kevin G. S. Xie, Ben A. Olsen, Denise J. M. Ahmed-Braun, Shizhong Zhang, and Joseph H. Thywissen

[Phys. Rev. X 13, 021013] Published Tue Apr 25, 2023

**Symmetries as the Guiding Principle for Flattening Bands of Dirac Fermions**

Yarden Sheffer, Raquel Queiroz, and Ady Stern

Author(s): Yarden Sheffer, Raquel Queiroz, and Ady Stern

[Phys. Rev. X 13, 021012] Published Mon Apr 24, 2023

**Single-Molecule Structure and Topology of Kinetoplast DNA Networks**

Pinyao He, Allard J. Katan, Luca Tubiana, Cees Dekker, and Davide Michieletto

Author(s): Pinyao He, Allard J. Katan, Luca Tubiana, Cees Dekker, and Davide Michieletto

[Phys. Rev. X 13, 021010] Published Wed Apr 19, 2023

**Protecting the Quantum Interference of Cat States by Phase-Space Compression**

Xiaozhou Pan, Jonathan Schwinger, Ni-Ni Huang, Pengtao Song, Weipin Chua, Fumiya Hanamura, Atharv Joshi, Fernando Valadares, Radim Filip, and Yvonne Y. Gao

Author(s): Xiaozhou Pan, Jonathan Schwinger, Ni-Ni Huang, Pengtao Song, Weipin Chua, Fumiya Hanamura, Atharv Joshi, Fernando Valadares, Radim Filip, and Yvonne Y. Gao

[Phys. Rev. X 13, 021004] Published Fri Apr 07, 2023

**Nonlocal Temporal Interferometry for Highly Resilient Free-Space Quantum Communication**

Lukas Bulla, Matej Pivoluska, Kristian Hjorth, Oskar Kohout, Jan Lang, Sebastian Ecker, Sebastian P. Neumann, Julius Bittermann, Robert Kindler, Marcus Huber, Martin Bohmann, and Rupert Ursin

Author(s): Lukas Bulla, Matej Pivoluska, Kristian Hjorth, Oskar Kohout, Jan Lang, Sebastian Ecker, Sebastian P. Neumann, Julius Bittermann, Robert Kindler, Marcus Huber, Martin Bohmann, and Rupert Ursin

[Phys. Rev. X 13, 021001] Published Mon Apr 03, 2023

**Measuring Arbitrary Physical Properties in Analog Quantum Simulation**

Minh C. Tran, Daniel K. Mark, Wen Wei Ho, and Soonwon Choi

Author(s): Minh C. Tran, Daniel K. Mark, Wen Wei Ho, and Soonwon Choi

[Phys. Rev. X 13, 011049] Published Thu Mar 30, 2023

**Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the ${10}^{−14}$ Level**

K. H. Leung, B. Iritani, E. Tiberi, I. Majewska, M. Borkowski, R. Moszynski, and T. Zelevinsky

Author(s): K. H. Leung, B. Iritani, E. Tiberi, I. Majewska, M. Borkowski, R. Moszynski, and T. Zelevinsky

[Phys. Rev. X 13, 011047] Published Tue Mar 28, 2023

**Coherent Fluctuations in Noisy Mesoscopic Systems, the Open Quantum SSEP, and Free Probability**

Ludwig Hruza and Denis Bernard

Author(s): Ludwig Hruza and Denis Bernard

[Phys. Rev. X 13, 011045] Published Fri Mar 24, 2023

**Disordered Heterogeneous Universe: Galaxy Distribution and Clustering across Length Scales**

Oliver H. E. Philcox and Salvatore Torquato

Author(s): Oliver H. E. Philcox and Salvatore Torquato

[Phys. Rev. X 13, 011038] Published Tue Mar 14, 2023

**Appropriate Mechanical Confinement Inhibits Multipolar Cell Division via Pole-Cortex Interaction**

Longcan Cheng, Jingchen Li, Houbo Sun, and Hongyuan Jiang

Author(s): Longcan Cheng, Jingchen Li, Houbo Sun, and Hongyuan Jiang

[Phys. Rev. X 13, 011036] Published Fri Mar 10, 2023

**Large Topological Hall Effect and Spiral Magnetic Order in the Weyl Semimetal SmAlSi**

Xiaohan Yao, Jonathan Gaudet, Rahul Verma, David E. Graf, Hung-Yu Yang, Faranak Bahrami, Ruiqi Zhang, Adam A. Aczel, Sujan Subedi, Darius H. Torchinsky, Jianwei Sun, Arun Bansil, Shin-Ming Huang, Bahadur Singh, Peter Blaha, Predrag Nikolić, and Fazel Tafti

Author(s): Xiaohan Yao, Jonathan Gaudet, Rahul Verma, David E. Graf, Hung-Yu Yang, Faranak Bahrami, Ruiqi Zhang, Adam A. Aczel, Sujan Subedi, Darius H. Torchinsky, Jianwei Sun, Arun Bansil, Shin-Ming Huang, Bahadur Singh, Peter Blaha, Predrag Nikolić, and Fazel Tafti

[Phys. Rev. X 13, 011035] Published Thu Mar 09, 2023

**Comparing Fractional Quantum Hall Laughlin and Jain Topological Orders with the Anyon Collider**

M. Ruelle, E. Frigerio, J.-M. Berroir, B. Plaçais, J. Rech, A. Cavanna, U. Gennser, Y. Jin, and G. Fève

Author(s): M. Ruelle, E. Frigerio, J.-M. Berroir, B. Plaçais, J. Rech, A. Cavanna, U. Gennser, Y. Jin, and G. Fève

[Phys. Rev. X 13, 011031] Published Fri Mar 03, 2023

**Quantum Dynamics of Attractive and Repulsive Polarons in a Doped ${\mathrm{MoSe}}_{2}$ Monolayer**

Di Huang, Kevin Sampson, Yue Ni, Zhida Liu, Danfu Liang, Kenji Watanabe, Takashi Taniguchi, Hebin Li, Eric Martin, Jesper Levinsen, Meera M. Parish, Emanuel Tutuc, Dmitry K. Efimkin, and Xiaoqin Li

Author(s): Di Huang, Kevin Sampson, Yue Ni, Zhida Liu, Danfu Liang, Kenji Watanabe, Takashi Taniguchi, Hebin Li, Eric Martin, Jesper Levinsen, Meera M. Parish, Emanuel Tutuc, Dmitry K. Efimkin, and Xiaoqin Li

[Phys. Rev. X 13, 011029] Published Thu Mar 02, 2023

**Interference Measurements of Non-Abelian $e/4$ & Abelian $e/2$ Quasiparticle Braiding**

R. L. Willett, K. Shtengel, C. Nayak, L. N. Pfeiffer, Y. J. Chung, M. L. Peabody, K. W. Baldwin, and K. W. West

Author(s): R. L. Willett, K. Shtengel, C. Nayak, L. N. Pfeiffer, Y. J. Chung, M. L. Peabody, K. W. Baldwin, and K. W. West

[Phys. Rev. X 13, 011028] Published Wed Mar 01, 2023

Found 11 papers in pr_res We present a method to constrain local charge multipoles within density-functional theory. Such multipoles quantify the anisotropy of the local charge distribution around atomic sites and can indicate potential hidden orders. Our method allows selective control of specific multipoles, facilitating a… The noisy-storage model of quantum cryptography allows for information-theoretically secure two-party computation based on the assumption that a cheating user has at most access to an imperfect, noisy quantum memory, whereas the honest users do not need a quantum memory at all. In general, the more … Domain walls (DWs) on magnetic racetracks are at the core of the field of spintronics, providing a basic element for classical information processing. Here, we show that mobile DWs also provide a blueprint for large-scale quantum computers. Remarkably, these DW qubits showcase exceptional versatilit… Fermi gases and liquids display an excitation spectrum that is simply connected, ensuring closed Fermi surfaces. In strongly correlated systems such as the cuprate superconductors, the existence of open sheets of Fermi surface known as Fermi arcs indicate a distinctly different topology of the spect… Fast and accurate current-driven manipulation of magnetic domain walls (DWs) is crucial for the realization of high-performance spintronic devices. Conventional methods to observe current-induced DW motion (CIDWM) require the accumulative measurement of magnetization dynamics, which is in general in… Unextendible product bases (UPBs) play a key role in the study of quantum entanglement and nonlocality. Here we provide an equivalent characterization of UPBs in graph-theoretic terms. Different from previous graph-theoretic investigations of UPBs, which focused mostly on the orthogonality relations… Robust and tunable topological Josephson junctions (TJJs) are highly desirable platforms for investigating the anomalous Josephson effect and topological quantum computation applications. Experimental demonstrations have been done in hybrid superconducting-two dimensional topological insulator (2DTI… Ring-shaped mesoscopic magnetic islands are shown to bond to neighboring islands through stray fields, facilitated by the topology of the magnetization textures. This bonding process shares similarities with polymerization observed in molecular networks. The thermal properties are investigated and can be seen to result in the emergence of structures that percolate throughout the lattice of magnetic islands. Topological phases have been reported on self-similar structures in the presence of a perpendicular magnetic field. Here, we present an understanding of these phases from a perspective of spectral flow and charge pumping. We study the Harper-Hofstadter model on self-similar structures constructed fr… We use analytically tractable dielectric response models, which are supported by The dynamics of a magnetic moment or spin are of high interest to applications in technology. Dissipation in these systems is therefore of importance for improvement of efficiency of devices, such as the ones proposed in spintronics. A large spin in a magnetic field is widely assumed to be described…

Date of feed: Tue, 19 Sep 2023 03:17:24 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Exploring energy landscapes of charge multipoles using constrained density functional theory**

Luca Schaufelberger, Maximilian E. Merkel, Aria Mansouri Tehrani, Nicola A. Spaldin, and Claude Ederer

Author(s): Luca Schaufelberger, Maximilian E. Merkel, Aria Mansouri Tehrani, Nicola A. Spaldin, and Claude Ederer

[Phys. Rev. Research 5, 033172] Published Fri Sep 08, 2023

**Error-tolerant oblivious transfer in the noisy-storage model**

Cosmo Lupo, James T. Peat, Erika Andersson, and Pieter Kok

Author(s): Cosmo Lupo, James T. Peat, Erika Andersson, and Pieter Kok

[Phys. Rev. Research 5, 033163] Published Thu Sep 07, 2023

**Quantum computing on magnetic racetracks with flying domain wall qubits**

Ji Zou, Stefano Bosco, Banabir Pal, Stuart S. P. Parkin, Jelena Klinovaja, and Daniel Loss

Author(s): Ji Zou, Stefano Bosco, Banabir Pal, Stuart S. P. Parkin, Jelena Klinovaja, and Daniel Loss

[Phys. Rev. Research 5, 033166] Published Thu Sep 07, 2023

**Spectral topology and its relation to Fermi arcs in strongly correlated systems**

Johan Carlström

Author(s): Johan Carlström

[Phys. Rev. Research 5, 033160] Published Wed Sep 06, 2023

**Ultrafast stroboscopic time-resolved magneto-optical imaging of domain wall motion in Pt/GdFeCo wires induced by a current pulse**

Kazuma Ogawa, Naotaka Yoshikawa, Mio Ishibashi, Kay Yakushiji, Arata Tsukamoto, Masamitsu Hayashi, and Ryo Shimano

Author(s): Kazuma Ogawa, Naotaka Yoshikawa, Mio Ishibashi, Kay Yakushiji, Arata Tsukamoto, Masamitsu Hayashi, and Ryo Shimano

[Phys. Rev. Research 5, 033151] Published Fri Sep 01, 2023

**Graph-theoretic characterization of unextendible product bases**

Fei Shi, Ge Bai, Xiande Zhang, Qi Zhao, and Giulio Chiribella

Author(s): Fei Shi, Ge Bai, Xiande Zhang, Qi Zhao, and Giulio Chiribella

[Phys. Rev. Research 5, 033144] Published Thu Aug 31, 2023

**Topological Josephson junctions in the integer quantum Hall regime**

Gianmichele Blasi, Géraldine Haack, Vittorio Giovannetti, Fabio Taddei, and Alessandro Braggio

Author(s): Gianmichele Blasi, Géraldine Haack, Vittorio Giovannetti, Fabio Taddei, and Alessandro Braggio

[Phys. Rev. Research 5, 033142] Published Wed Aug 30, 2023

**Polymerization in magnetic metamaterials**

Samuel D. Slöetjes, Matías P. Grassi, and Vassilios Kapaklis

Author(s): Samuel D. Slöetjes, Matías P. Grassi, and Vassilios Kapaklis

[Phys. Rev. Research 5, L032029] Published Wed Aug 30, 2023

**Adiabatic pumping and transport in the Sierpinski-Hofstadter model**

Saswat Sarangi and Anne E. B. Nielsen

Author(s): Saswat Sarangi and Anne E. B. Nielsen

[Phys. Rev. Research 5, 033132] Published Fri Aug 25, 2023

**Plasmon wake in anisotropic two-dimensional materials**

Zoran L. Mišković and Milad Moshayedi

Author(s): Zoran L. Mišković and Milad Moshayedi*ab initio* calculations for anisotropic two-dimensional (2D) materials and quasi-2D metals that host slow plasmons, to reveal a rich variety of the plasmonic wake patterns in the electric potential induced by a charged p…

[Phys. Rev. Research 5, 033133] Published Fri Aug 25, 2023

**Fractional Landau-Lifshitz-Gilbert equation**

R. C. Verstraten, T. Ludwig, R. A. Duine, and C. Morais Smith

Author(s): R. C. Verstraten, T. Ludwig, R. A. Duine, and C. Morais Smith

[Phys. Rev. Research 5, 033128] Published Thu Aug 24, 2023

Found 17 papers in acs-nano

Date of feed: Mon, 18 Sep 2023 13:04:02 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **[ASAP] Isomer Discrimination via Defect Engineering in Monolayer MoS2**

Bin Han, Sai Manoj Gali, Shuting Dai, David Beljonne, and Paolo SamorìACS NanoDOI: 10.1021/acsnano.3c04194

**[ASAP] Highly Durable and Efficient Seawater Electrolysis Enabled by Defective Graphene-Confined Nanoreactor**

Zhichao Gong, Jingjing Liu, Minmin Yan, Haisheng Gong, Gonglan Ye, and Huilong FeiACS NanoDOI: 10.1021/acsnano.3c05749

**[ASAP] Graphene Field Effect Biosensor for Concurrent and Specific Detection of SARS-CoV-2 and Influenza**

Neelotpala Kumar, Dalton Towers, Samantha Myers, Cooper Galvin, Dmitry Kireev, Andrew D. Ellington, and Deji AkinwandeACS NanoDOI: 10.1021/acsnano.3c07707

**[ASAP] Probing the Twist-Controlled Interlayer Coupling in Artificially Stacked Transition Metal Dichalcogenide Bilayers by Second-Harmonic Generation**

Yuanjian Yuan, Peng Liu, Hongjian Wu, Haitao Chen, Weihao Zheng, Gang Peng, Zhihong Zhu, Mengjian Zhu, Jiayu Dai, Shiqiao Qin, and Kostya S. NovoselovACS NanoDOI: 10.1021/acsnano.3c03795

**[ASAP] Excitons Enabled Topological Phase Singularity in a Single Atomic Layer**

Guoteng Ma, Wanfu Shen, Daniel Soy Sanchez, Yu Yu, Han Wang, Lidong Sun, Xinran Wang, and Chunguang HuACS NanoDOI: 10.1021/acsnano.3c02478

**[ASAP] Understanding the Optical Properties of Doped and Undoped 9-Armchair Graphene Nanoribbons in Dispersion**

Sebastian Lindenthal, Daniele Fazzi, Nicolas F. Zorn, Abdurrahman Ali El Yumin, Simon Settele, Britta Weidinger, Eva Blasco, and Jana ZaumseilACS NanoDOI: 10.1021/acsnano.3c05246

**[ASAP] Probing the Inelastic Electron Tunneling via the Photocurrent in a Vertical Graphene van der Waals Heterostructure**

Binghe Xie, Zijie Ji, Jiaxin Wu, Ruan Zhang, Yunmin Jin, Kenji Watanabe, Takashi Taniguchi, Zhao Liu, and Xinghan CaiACS NanoDOI: 10.1021/acsnano.3c05666

**[ASAP] Direct Observation of Locally Modified Excitonic Effects within a Moiré Unit Cell in Twisted Bilayer Graphene**

Ming Liu, Ryosuke Senga, Masanori Koshino, Yung-Chang Lin, and Kazu SuenagaACS NanoDOI: 10.1021/acsnano.3c06021

**[ASAP] Chirality-Induced Spin Selectivity in Supramolecular Chirally Functionalized Graphene**

Seyedamin Firouzeh, Sara Illescas-Lopez, Md Anik Hossain, Juan Manuel Cuerva, Luis Álvarez de Cienfuegos, and Sandipan PramanikACS NanoDOI: 10.1021/acsnano.3c06903

**[ASAP] On-Surface Synthesis of Graphene Nanoribbons with Atomically Precise Structural Heterogeneities and On-Site Characterizations**

Ruoting Yin, Zhengya Wang, Shijing Tan, Chuanxu Ma, and Bing WangACS NanoDOI: 10.1021/acsnano.3c06128

**[ASAP] Chemical Amplification-Enabled Topological Modification of Nucleic Acid Aptamers for Enhanced Cancer-Targeted Theranostics**

Hong Chen, Yazhou Li, Zhenzhen Xiao, Jili Li, Ting Li, Zhiqiang Wang, Yanlan Liu, and Weihong TanACS NanoDOI: 10.1021/acsnano.3c01955

**[ASAP] Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe2**

Sikandar Aftab, Muhammad Arslan Shehzad, Hafiz Muhammad Salman Ajmal, Fahmid Kabir, Muhammad Zahir Iqbal, and Abdullah A. Al-KahtaniACS NanoDOI: 10.1021/acsnano.3c03593

**[ASAP] Multimodal E-Textile Enabled by One-Step Maskless Patterning of Femtosecond-Laser-Induced Graphene on Nonwoven, Knit, and Woven Textiles**

Dongwook Yang, Han Ku Nam, Truong-Son Dinh Le, Jinwook Yeo, Younggeun Lee, Young-Ryeul Kim, Seung-Woo Kim, Hak-Jong Choi, Hyung Cheoul Shim, Seunghwa Ryu, Soongeun Kwon, and Young-Jin KimACS NanoDOI: 10.1021/acsnano.3c04120

**[ASAP] Nonlinear Optical Responses of Janus MoSSe/MoS2 Heterobilayers Optimized by Stacking Order and Strain**

Nguyen Tuan Hung, Kunyan Zhang, Vuong Van Thanh, Yunfan Guo, Alexander A. Puretzky, David B. Geohegan, Jing Kong, Shengxi Huang, and Riichiro SaitoACS NanoDOI: 10.1021/acsnano.3c04436

**[ASAP] Sub-5 nm Contacts and Induced p–n Junction Formation in Individual Atomically Precise Graphene Nanoribbons**

Pin-Chiao Huang, Hongye Sun, Mamun Sarker, Christopher M. Caroff, Gregory S. Girolami, Alexander Sinitskii, and Joseph W. LydingACS NanoDOI: 10.1021/acsnano.3c02794

**[ASAP] Edge Contacts to Atomically Precise Graphene Nanoribbons**

Wenhao Huang, Oliver Braun, David I. Indolese, Gabriela Borin Barin, Guido Gandus, Michael Stiefel, Antonis Olziersky, Klaus Müllen, Mathieu Luisier, Daniele Passerone, Pascal Ruffieux, Christian Schönenberger, Kenji Watanabe, Takashi Taniguchi, Roman Fasel, Jian Zhang, Michel Calame, and Mickael L. PerrinACS NanoDOI: 10.1021/acsnano.3c00782

**[ASAP] Ultra-Wideband Mid-Infrared Chalcogenide Suspended Nanorib Waveguide Gas Sensors with Exceptionally High External Confinement Factor beyond Free-Space**

Mingquan Pi, Chuantao Zheng, Huan Zhao, Zihang Peng, Gangyun Guan, Jialin Ji, Yijun Huang, Yuting Min, Lei Liang, Fang Song, Xue Bai, Yu Zhang, Yiding Wang, and Frank K. TittelACS NanoDOI: 10.1021/acsnano.3c02699

Found 1 papers in nat-comm **Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Interlayer donor-acceptor pair excitons in MoSe2/WSe2 moiré heterobilayer**

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Found 1 papers in comm-phys Communications Physics, Published online: 18 September 2023; doi:10.1038/s42005-023-01358-y**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Geometric magnetism and anomalous enantio-sensitive observables in photoionization of chiral molecules**

Olga Smirnova