Found 39 papers in cond-mat Earlier theoretical results on $p$-$d$ and $d$-$d$ exchange interactions for
zinc-blende semiconductors with Cr$^{2{+}}$ and Mn$^{3{+}}$ ions are revisited
and extended by including contributions beyond the dominating ferromagnetic
(FM) superexchange term [i.e., the interband Bloembergen-Rowland-Van Vleck
contribution and antiferromagnetic (AFM) two-electron term], and applied to
topological Cr-doped HgTe and non-topological (Zn,Cr)Te and (Ga,Mn)N in
zinc-blende and wurtzite crystallographic structures. From the obtained values
of the $d$-$d$ exchange integrals $J_{ij}$, and by combining the Monte-Carlo
simulations with the percolation theory for randomly distributed magnetic ions,
we determine magnitudes of Curie temperatures $T_{\text{C}}(x)$ for
$\mathrm{Zn}_{1-x}\mathrm{Cr}_x\mathrm{Te}$ and
$\mathrm{Ga}_{1-x}\mathrm{Mn}_x\mathrm{N}$ and compare to available
experimental data. Furthermore, we find that competition between FM and AFM
$d$-$d$ interactions can lead to a spin-glass phase in the case of
$\mathrm{Hg}_{1-x}\mathrm{Cr}_x\mathrm{Te}$. This competition, along with a
relatively large magnitude of the AF $p$-$d$ exchange energy $N_0\beta$ can
stabilize the quantum spin Hall effect, but may require the application of a
tilted magnetic field to observe the quantum anomalous Hall effect in HgTe
quantum wells doped with Cr.
We discuss two-dimensional conformal field theories (CFTs) which are
invariant under gauging a non-invertible global symmetry. At every point on the
orbifold branch of $c=1$ CFTs, it is known that the theory is self-dual under
gauging a $\mathbb{Z}_2 \times \mathbb{Z}_2$ symmetry, and has
$\mathsf{Rep}(H_8)$ and $\mathsf{Rep}(D_8)$ fusion category symmetries as a
result. We find that gauging the entire $\mathsf{Rep}(H_8)$ fusion category
symmetry maps the orbifold theory at radius $R$ to that at radius $2/R$. At
$R=\sqrt{2}$, which corresponds to two decoupled Ising CFTs (Ising$^2$ in
short), the theory is self-dual under gauging the $\mathsf{Rep}(H_8)$ symmetry.
This implies the existence of a new topological defect line in the Ising$^2$
CFT obtained from half-space gauging of the $\mathsf{Rep}(H_8)$ symmetry, which
commutes with the $c=1$ Virasoro algebra but does not preserve the fully
extended chiral algebra. We bootstrap its action on the $c=1$ Virasoro primary
operators, and find that there are no relevant or marginal operators preserving
it. Mathematically, the new topological line combines with the
$\mathsf{Rep}(H_8)$ symmetry to form a bigger fusion category which is a
$\mathbb{Z}_2$-extension of $\mathsf{Rep}(H_8)$. We solve the pentagon
equations including the additional topological line and find 8 solutions, where
two of them are realized in the Ising$^2$ CFT. Finally, we show that the torus
partition functions of the Monster$^2$ CFT and Ising$\times$Monster CFT are
also invariant under gauging the $\mathsf{Rep}(H_8)$ symmetry.
We theoretically study the interplay of short-ranged random and quasiperiodic
static potentials on the low-energy properties of three-dimensional Weyl
semimetals. This setting allows us to investigate the connection between the
semimetal to diffusive metal "magic-angle" phase transition due to
quasiperiodicity and the rare-region induced crossover at an avoided quantum
critical point (AQCP) due to disorder. We show that in the presence of both
random and quasiperiodic potentials the AQCP becomes lines of crossovers, which
terminate at magic-angle critical points in the quasiperiodic, disorder-free
limit. We analyze the magic-angle transition by approaching it along these
lines of avoided transitions, which unveils a rich miniband structure and
several AQCPs. These effects can be witnessed in cold-atomic experiments
through potential engineering on semimetallic band structures.
Recently, chiral anomaly (CA) has been proposed to occur in spin-orbit
coupled noncentrosymmetric metals (SOC-NCMs), motivating CA to be a Fermi
surface property rather than a Weyl node property. Although the nature of the
anomaly is similar in both SOC-NCMs and Weyl systems, here we point out
significant fundamental differences between the two. We show that the different
nature of the orbital magnetic moment (OMM) in the two systems leads to
non-trivial consequences -- particularly the sign of the longitudinal
magnetoconductance always remains positive in a SOC non-centrosymmetric metal,
unlike a Weyl metal that displays either sign. Furthermore,we investigate the
planar Hall effect and the geometrical contribution to the Hall effect in the
two systems and point out significant differences in the two systems. We
conduct our analysis for magnetic and non-magnetic impurities, making our study
important in light of current and upcoming experiments in both SOC-NCMs and
Weyl metals.
Electrical control of individual spins and photons in solids is key for
quantum technologies, but scaling down to small, static systems remains
challenging. Here, we demonstrate nanoscale electrical tuning of neutral and
charged excitons in monolayer WSe2 using 1-nm carbon nanotube gates.
Electrostatic simulations reveal a confinement radius below 15 nm, reaching the
exciton Bohr radius limit for few-layer dielectric spacing. In situ
photoluminescence spectroscopy shows gate-controlled conversion between neutral
excitons, negatively charged trions, and biexcitons at 4 K. Important for
quantum information processing applications, our measurements indicate gating
of a local 2D electron gas in the WSe2 layer, coupled to photons via trion
transitions with binding energies exceeding 20 meV. The ability to
deterministically tune and address quantum emitters using nanoscale gates
provides a pathway towards large-scale quantum optoelectronic circuits and
spin-photon interfaces for quantum networking.
Optical excitations in moir\'e transition metal dichalcogenide bilayers lead
to the creation of excitons, as electron-hole bound states, that are
generically considered within a Bose-Hubbard framework. Here, we demonstrate
that these composite particles obey an angular momentum commutation relation
that is generally non-bosonic. This emergent spin description of excitons
indicates a limitation to their occupancy on each site, which is substantial in
the weak electron-hole binding regime. The effective exciton theory is
accordingly a spin Hamiltonian, which further becomes a Hubbard model of
emergent bosons subject to an occupancy constraint after a Holstein-Primakoff
transformation. We apply our theory to three commonly studied bilayers
(MoSe2/WSe2, WSe2/WS2, and WSe2/MoS2) and show that in the relevant parameter
regimes their allowed occupancies never exceed three excitons. Our systematic
theory provides guidelines for future research on the many-body physics of
moir\'e excitons.
We show that Rashba spin-orbit coupling modifies electron-electron
interaction vertex leading to a number of novel phenomena. First, the
spin-orbit-modified Coulomb interactions induce p-wave superconducting order,
without any other mediators of attraction. Second, a sufficiently strong
spin-orbit coupling results in a ferromagnetic order, associated with a
Lifshitz transition from a spherical to a toroidal Fermi surface. Such
topology-changing transition leads to distinct experimentally observable
consequences. Finally, in sufficiently clean Rashba materials, the
ferromagnetism may coexist with the p-wave superconductivity.
We establish a general Rashba Hamiltonian for trilayer graphene (TLG) by
introducing an extrinsic layer-dependent Rashba spin-orbit coupling (SOC)
arising from the off-plane inversion symmetry breaking. Our results indicate
that the band spin splitting depends strongly on the layer-distribution and
sign of Rashba SOC as well as the ABA or ABC stacking order of TLG. We find
that spin splitting is significantly enhanced as the number of layers of the
Rashba SOC with the same sign and magnitude increases. For the
spatially-separated two Rashba SOCs of the same magnitude but the opposite
sign, no spin splitting arises in ABC-TLG due to the preservation of inversion
symmetry that ensures the complete cancellation of contributions from the
opposite layers, whereas nonzero spin splitting is observed for ABA-TLG due to
its own lack of inversion symmetry. We further illustrate that gate voltage is
effective to modulate the spin-polarized states near the band edges. Moreover,
we use density functional theory calculations to verify the Rashba splitting
effect in the example of TLG interfaced by Au layer(s), which induce
simultaneously the effective terms of Rashba SOC and gate voltage. Our results
demonstrate the significance of layer and symmetry in manipulating spin and can
be extended to multilayer graphene or other van der Waals interface systems.
The tunnel current (TC) and valley current (VC) are crucial in realizing
high-speed and energy-saving in next-generation devices. This paper presents
the TC and VC link in the partially overlapped graphene. Under the vertical
electric field, the two graphene layers have the opposite AB sublattice
symmetry, followed by a block on the intravalley transmission. In the allowed
intervalley transmission, the difference in the phase of the decay factor
prefers only one of the valleys in the output according to the overlapped
length. These results suggest that the band gap with no edge state is a new
platform of valleytronics.
Polaritonic lattice configurations in dimensions $D=2$ are used as simulators
of topological phases, based on symmetry class A Hamiltonians. Numerical and
topological studies are performed in order to characterise the bulk topology of
insulating phases, which is predicted to be connected to non-trivial edge mode
states on the boundary. By using spectral flattened Hamiltonians on specific
lattice geometries with time reversal symmetry breaking, e.g. Kagome lattice,
we obtain maps from the Brillouin zone into Grassmannian spaces, which are
further investigated by the topological method of space fibrations. Numerical
evidence reveals a connection between the sum of valence band Chern numbers and
the index of the projection operator onto the valence band states. Along these
lines, we discover an index formula which resembles other index theorems and
the classical result of Atiyah-Singer, but without any Dirac operator and from
a different perspective. Through a combination of different tools, in
particular homotopy and homology-cohomology duality, we provide a comprehensive
mathematical framework, which fully addresses the source and structure of
topological phases in coupled polaritonic array systems. Based on these
results, it becomes possible to infer further designs and models of
two-dimensional single sheet Chern insulators, implemented as polariton
simulators.
Two-dimensional (2D) layered magnets, such as iron chalcogenides, have
emerged these years as a new family of unconventional superconductor and
provided the key insights to understand the phonon-electron interaction and
pairing mechanism. Their mechanical properties are of strategic importance for
the potential applications in spintronics and optoelectronics. However, there
is still lack of efficient approach to tune the elastic modulus despite the
extensive studies. Herein, we report the modulated elastic modulus of 2D
magnetic FeTe and its thickness-dependence via phase engineering. The grown 2D
FeTe by chemical vapor deposition can present various polymorphs, i.e.
tetragonal FeTe (t-FeTe, antiferromagnetic) and hexagonal FeTe (h-FeTe,
ferromagnetic). The measured Young's modulus of t-FeTe by nanoindentation
method showed an obvious thickness-dependence, from 290.9+-9.2 to 113.0+-8.7
GPa when the thicknesses increased from 13.2 to 42.5 nm, respectively. In
comparison, the elastic modulus of h-FeTe remains unchanged. Our results could
shed light on the efficient modulation of mechanical properties of 2D magnetic
materials and pave the avenues for their practical applications in nanodevices.
The time evolution of a topological Su-Schrieffer-Heeger chain is analyzed
through the statistics of speckle patterns. The emergence of topological edge
states dramatically affects the dynamical fluctuations of the wavefunction. The
intensity statistics is found to be described by a family of noncentral
chi-squared distributions, with the noncentrality parameter reflecting on the
degree of edge-state localization. The response of the speckle contrast with
respect to the dimerization of the chain is explored in detail as well as the
role of chiral symmetry-breaking disorder, number of edge states, their energy
gap, and the locations between which the transport occurs. In addition to
providing a venue for speckle customization, our results appeal to the use of
speckle patterns for characterization of nontrivial topological properties.
An analytical theory to calculate the dissipatively stable concurrence in the
system of two coupled flux superconducting qubits in the strong driving field
is developed. The conditions for the entanglement state generation and
destruction during the formation of the multiphoton transitions regions due to
the interference of Landau--Zener--St\"uckelberg--Majorana are found. Based on
the solution of the Floquet--Markov equation, the technique is proposed to
adjust the amplitudes of dc- and ac-fields for effective control of the
entanglement between qubit states while taking into account the effects of the
decoherence.
An ever present challenge for Li-ion batteries is the formation of metallic
dendrites on cycling that dramatically reduces cycle life and leads to the
untimely failure of the cell. In this work we investigate the modes of
Li-cluster formation on pristine and defective graphene. Firstly, we
demonstrate that on a defect free surface the cluster formation is impeded by
the thermodynamic instability of \ce{Li_2} and \ce{Li_3} clusters. In contrast,
the presence of a vacancy dramatically favours clustering. This provides
insights into the two modes of Li-growth observed: for the pristine basal plane
if the Li-Li repulsion of the small clusters can be overcome then plating type
behaviour would be predicted (rate / voltage dependent and at any point on the
surface); whilst dendritic growth would be predicted to nucleate from vacancy
sites, either pre-existing in the material or formed as a result of processing.
Recent studies have identified plasma as a topological material. Yet, these
researches often depict plasma as a fluid governed by electromagnetic fields,
i.e., a classical wave system. Indeed, plasma transport can be characterized by
a unique diffusion process distinguished by its collective behaviors. In this
work, we adopt a simplified diffusion-migration method to elucidate the
topological plasma transport. Drawing parallels to the thermal
conduction-convection system, we introduce a double ring model to investigate
the plasma density behaviors in the anti-parity-time reversal (APT) unbroken
and broken phases. Subsequently, by augmenting the number of rings, we have
established a coupled ring chain structure. This structure serves as a medium
for realizing the APT symmetric one-dimensional (1D) reciprocal model,
representing the simplest tight-binding model with a trivial topology. To
develop a model featuring topological properties, we should modify the APT
symmetric 1D reciprocal model from the following two aspects: hopping amplitude
and onsite potential. From the hopping amplitude, we incorporate the
non-reciprocity to facilitate the non-Hermitian skin effect, an intrinsic
non-Hermitian topology. Meanwhile, from the onsite potential, the quasiperiodic
modulation has been adopted onto the APT symmetric 1D reciprocal model. This
APT symmetric 1D Aubry-Andr\'e-Harper model is of topological nature.
Additionally, we suggest the potential applications for these diffusive plasma
topological states. This study establishes a diffusion-based approach to
realizing topological states in plasma, potentially inspiring further
advancements in plasma physics.
The two-component cold atom systems with anisotropic hopping amplitudes can
be phenomenologically described by a two-dimensional Ising-XY coupled model
with spatial anisotropy. At low temperatures, theoretical predictions [Phys.
Rev. A 72, 053604 (2005)] and [arXiv:0706.1609] indicate the existence of a
topological ordered phase characterized by Ising and XY disorder but with 2XY
ordering. However, due to ergodic difficulties faced by Monte Carlo methods at
low temperatures, this topological phase has not been numerically explored. We
propose a linear cluster updating Monte Carlo method, which flips spins without
rejection in the anisotropy limit but does not change the energy. Using this
scheme and conventional Monte Carlo methods, we succeed in revealing the nature
of topological phases with half-vortices and domain walls. In the constructed
global phase diagram, Ising and XY type transitions are very close to each
other and differ significantly from the schematic phase diagram reported
earlier. We also propose and explore a wide range of quantities, including
magnetism, superfluidity, specific heat, susceptibility, and even percolation
susceptibility, and obtain consistent results. Furthermore, we observe
first-order transitions characterized by common intersection points in
magnetizations for different system sizes, as opposed to the conventional phase
transition where Binder cumulants of various sizes share common intersections.
The results are useful to help cold atom experiments explore the half-vortex
topological phase.
Quantum oscillations originating from the quantization of the electron
cyclotron orbits provide ultrasensitive diagnostics of electron bands and
interactions in novel materials. We report on the first direct-space nanoscale
imaging of the thermodynamic magnetization oscillations due to the de Haas-van
Alphen effect in moir\'e graphene. Scanning by SQUID-on-tip in Bernal bilayer
graphene crystal-axis-aligned to hBN reveals abnormally large magnetization
oscillations with amplitudes reaching 500 {\mu}_B/electron in weak magnetic
fields, unexpectedly low frequencies, and high sensitivity to the superlattice
filling fraction. The oscillations allow us to reconstruct the complex band
structure in exquisite detail, revealing narrow moir\'e bands with multiple
overlapping Fermi surfaces separated by unusually small momentum gaps. We
identify distinct sets of oscillations that violate the textbook Onsager Fermi
surface sum rule, signaling formation of exotic broad-band particle-hole
superposition states induced by coherent magnetic breakdown.
Transition-metal honeycomb compounds are capturing scientific attention due
to their distinctive electronic configurations, underscored by the
triangular-lattice spin-orbit coupling and competition between multiple
interactions, paving the way for potential manifestations of phenomena such as
Dirac semimetal, superconductivity, and quantum spin liquid states. These
compounds can undergo discernible pressure-induced alterations in their
crystallographic and electronic paradigms, as exemplified by our high-pressure
(HP) synthesis and exploration of the honeycomb polymorph of ReO3 (P6322). This
HP-P6322 polymorph bears a phase transition from P6322 to P63/mmc upon cooling
around Tp = 250 K, as evidenced by the evolution of temperature-dependent
magnetization (M-T curves), cell dimension, and conductivity initiated by an
inherent bifurcation of the oxygen position in the ab plane. Insightful
analysis of its band structure positions suggests this HP-P6322 polymorph being
a plausible candidate for Dirac semimetal properties. This phase transition
evokes anomalies in the temperature-dependent variation of paramagnetism
(non-linearity) and a crossover from semiconductor to temperature-independent
metal, showing a temperature independent conductivity behavior below ~200 K.
Under increasing external pressure, both the Tp and resistance of this
HP-polymorph is slightly magnetic-field dependent and undergo a "V"-style
evolution (decreasing and then increasing) before becoming pressure independent
up to 20.2 GPa. Theoretical calculations pinpoint this anionic disorder as a
probable catalyst for the decrement in the conductive efficiency and muted
temperature-dependent conductivity response.
Non-trivial electronic states are attracting intense attention in
low-dimensional physics. Though chirality has been identified in charge states
with a scalar order parameter, its intertwining with charge density waves
(CDW), film thickness and the impact on the electronic behaviors remain less
well understood. Here, using scanning tunneling microscopy, we report a 2 x 2
chiral CDW as well as a strong suppression of the Te-5p hole-band
backscattering in monolayer 1T-TiTe2. These exotic characters vanish in bilayer
TiTe2 with a non-CDW state. Theoretical calculations approve that chirality
comes from a helical stacking of the triple-q CDW components and therefore can
persist at the two-dimensional limit. Furthermore, the chirality renders the
Te-5p bands an unconventional orbital texture that prohibits electron
backscattering. Our study establishes TiTe2 as a promising playground for
manipulating the chiral ground states at the monolayer limit and provides a
novel path to engineer electronic properties from an orbital degree.
Spatiotemporal patterns in multicellular systems are important to
understanding tissue dynamics, for instance, during embryonic development and
disease. Here, we use a multiphase field model to study numerically the
behavior of a near-confluent monolayer of deformable cells with intercellular
friction. Varying friction and cell motility drives a solid-liquid transition,
and near the transition boundary, we find the emergence of nematic order of
cell deformation driven by shear-aligning cellular flows. Intercellular
friction endows the monolayer with a finite viscosity, which significantly
increases the spatial correlation in the flow and, concomitantly, the extent of
nematic order. We also show that hexatic and nematic order are tightly coupled
and propose a mechanical-geometric model for the colocalization of +1/2 nematic
defects and 5-7 disclination pairs, which are the structural defects in the
hexatic phase. Such topological defects coincide with regions of high cell-cell
overlap, suggesting that they may mediate cellular extrusion from the
monolayer, as found experimentally. Our results delineate a mechanical basis
for the recent observation of nematic and hexatic order in multicellular
collectives in experiments and simulations and pinpoint a generic pathway to
couple topological and physical effects in these systems.
Recently, the real topology has been attracting widespread interest in two
dimensions (2D). Here, based on first-principles calculations and theoretical
analysis, we reveal the monolayer Cr$_2$Se$_2$O (ML-CrSeO) as the first
material example of a 2D antiferromagnetic (AFM) real Chern insulator (RCI)
with topologically protected corner states. Unlike previous RCIs, we find that
the real topology of the ML-CrSeO is rooted in one certain mirror subsystem of
the two spin channels, and can not be directly obtained from all the valence
bands in each spin channel as commonly believed. In particular, due to
antiferromagnetism, the corner modes in ML-CrSeO exhibit strong
corner-contrasted spin polarization, leading to spin-corner coupling (SCC).
This SCC enables a direct connection between spin space and real space.
Consequently, large and switchable net magnetization can be induced in the
ML-CrSeO nanodisk by electrostatic means, such as potential step and in-plane
electric field, and the corresponding magnetoelectric responses behave like a
sign function, distinguished from that of the conventional multiferroic
materials. Our work considerably broadens the candidate range of RCI materials,
and opens up a new direction for topo-spintronics and 2D AFM materials
research.
The emergence of the fascinating non-linear Hall effect intrinsically depends
on the non-zero value of the Berry curvature dipole. In this work, we predict
that suitable strain engineering in layered van der Waals material phosphorene
can give rise to a significantly large Berry curvature dipole. Using symmetry
design principles, and a combination of feasible strain and staggered on-site
potentials, we show how a substantial Berry curvature dipole may be engineered
at the Fermi level. We discover that monolayer phosphorene exhibits the most
intense Berry curvature dipole peak near 11.8% strain, which is also a critical
point for the topological phase transition in pristine phosphorene.
Furthermore, we have shown that the necessary strain value to achieve
substantial Berry curvature dipole can be reduced by increasing the number of
layers. We have revealed that strain in these van der Waals systems not only
alters the magnitude of Berry curvature dipole to a significant value but
allows control over its sign. We are hopeful that our predictions will pave way
to realize the non-linear Hall effect in such elemental van der Waals systems.
We study the logarithmic entanglement negativity of symmetry-protected
topological (SPT) phases and quantum critical points (QCPs) of one-dimensional
noninteracting fermions at finite temperatures. In particular, we consider a
free fermion model that realizes not only quantum phase transitions between
gapped phases but also an exotic topological phase transition between quantum
critical states in the form of the fermionic Lifshitz transition. We find that
the bipartite entanglement negativity between adjacent fermion blocks reveals
the crossover boundary of the quantum critical fan near the QCP between two
gapped phases. Along the critical phase boundary between the gapped phases, the
sudden decrease in the entanglement negativity signals the fermionic Lifshitz
transition responsible for the change in the topological nature of the QCPs. In
addition, the tripartite entanglement negativity between spatially separated
fermion blocks counts the number of topologically protected boundary modes for
both SPT phases and topologically nontrivial QCPs at zero temperature. However,
the long-distance entanglement between the boundary modes vanishes at finite
temperatures due to the instability of SPTs, the phases themselves.
Nontrivial topological superconductivity has received enormous research
attentions due to its potential for diverse applications in topological quantum
computing. The intrinsic issue concerning the correlation between a topological
insulator and a superconductor is, however, still widely open. Here, we
systemically report an emergent superconductivity in a cross-junction composed
of a magnetic topological insulator MnBi2Te4 and a conventional superconductor
NbSe2. Remarkably, the interface indicates existence of a reduced
superconductivity at surface of NbSe2 and a proximity-effectinduced
superconductivity at surface of MnBi2Te4. Furthermore, the in-plane
angular-dependent magnetoresistance measurements reveal the fingerprints of the
paring symmetry behaviors for these superconducting gaps as a unconventional
nature. Our findings extend our views and ideas of topological
superconductivity in the superconducting heterostructures with time-reversal
symmetry breaking, offering an exciting opportunity to elucidate the
cooperative effects on the surface state of a topological insulator aligning a
superconductor.
The study of twisted bilayer graphene (TBG) is a hot topic in condensed
matter physics with special focus on {\em magic angles} of twisting at which
TBG acquires unusual properties. Mathematically, topologically non-trivial flat
bands appear at those special angles. The chiral model of TBG pioneered by
Tarnopolsky--Kruchkov--Vishwanath has particularly nice mathematical properties
and we survey, and in some cases, clarify, recent rigorous results which
exploit them.
We study the microscopic model of electrons in the partially-filled lowest
Landau level interacting via the Coulomb potential by the diagrammatic theory
within the GW approximation. In a wide range of filling fractions and
temperatures, we find a homogeneous non-Fermi liquid (nFL) state similar to
that found in the Sachdev-Ye-Kitaev (SYK) model, with logarithmic corrections
to the anomalous dimension. In addition, the phase diagram is qualitatively
similiar to that of SYK: a first-order transition terminating at a critical
end-point separates the nFL phase from a band insulator that corresponds to the
fully-filled Landau level. This critical point, as well as that of the SYK
model -- whose critical exponents we determine more precisely -- are shown to
both belong to the Van der Waals universality class. The possibility of a
charge density wave (CDW) instability is also investigated, and we find the
homogeneous nFL state to extend down to the ground state for fillings $0.2
\lesssim \nu \lesssim 0.8$, while a CDW appears outside this range of fillings
at sufficiently low temperatures. Our results suggest that the SYK-like nFL
state should be a generic feature of the partially-filled lowest Landau level
at intermediate temperatures.
Moir\'e structures, along with line-graph-based $d$-electron systems,
represent a setting to realize flat bands. One form of the associated strong
correlation physics is the Kondo effect. Here, we address the Kondo-driven
heavy fermion state and its destruction in AB-stacked hetero-bilayer transition
metal dichalcogenide with tunable filling factor and perpendicular displacement
field. In an extended range of the tunable displacement field, the relative
filling of the more correlated orbital is enforced to be $\nu_d \approx 1$ by
the interaction, which agrees with the experimental observation. We also argue
that the qualitative behavior of the crossover associated with the Kondo
picture in an extended correlation regime provides the understanding of the
energy scales that have been observed in this system. Our results set the stage
to address the amplified quantum fluctuations that the Kondo effect may produce
in these structures and new regimes that the systems open up for
Kondo-destruction quantum criticality.
Antiferromagnetic topological insulators (AFM TIs), which host magnetically
gapped Dirac-cone surface states and exhibit many exotic physical phenomena,
have attracted great attention. The coupling between the top and bottom surface
states becomes significant and plays a crucial role in its low-energy physics,
as the thickness of an AFM TI film decreases. Here, we find that the coupled
surface states can be intertwined to give birth to a set of $2n$ brand new
Dirac cones, dubbed \emph{intertwined Dirac cones}, through the anisotropic
coupling due to the $n$-fold crystalline rotation symmetry $C_{nz}$ ($n=2, 3,
4, 6$) in the presence of an out-of-plane electric field. Interestingly, we
also find that the warping effect further drives the intertwined Dirac-cone
state into a quantum anomalous Hall phase with a high Chern number ($C=n$).
Then, we demonstrate the emergent six intertwined Dirac cones and the
corresponding Chern insulating phase with a high Chern number ($C=3$) in
MnBi$_2$Te$_4$$/$(Bi$_2$Te$_3$)$_{\mathrm{m}}/$MnBi$_2$Te$_4$ heterostructures
through first-principles calculations. This work discovers a new intertwined
Dirac-cone state in AFM TI thin films and also reveals a new mechanism for
designing the quantum anomalous Hall state with a high Chern number.
Periodically driven systems often exhibit behavior distinct from static
systems. In single-particle, static systems, any amount of disorder generically
localizes all eigenstates in one dimension. In contrast, we show that in
topologically non-trivial, single-particle Floquet loop drives with chiral
symmetry in one dimension, a localization-delocalization transition occurs as
the time $t$ is varied within the driving period ($0 \le t \le
T_\text{drive}$). We find that the time-dependent localization length
$L_\text{loc}(t)$ diverges with a universal exponent as $t$ approaches the
midpoint of the drive: $L_\text{loc}(t) \sim (t - T_\text{drive}/2)^{-\nu}$
with $\nu=2$. We provide analytical and numerical evidence for the universality
of this exponent within the AIII symmetry class.
We present the topology of magnons on the triangular kagome lattice (TKL) by
calculating its Berry curvature, Chern number and edge states. In addition to
the ferromagnetic state, the TKL hosts ferrimagnetic ground state as its two
sublattices can couple with each other either ferromagnetically or
antiferromagnetically. Using Holstein-Primakoff (HP) boson theory and Green's
function approach, we find that the TKL has a rich topological band structure
with added high Chern numbers compared with the kagome and honeycomb lattices.
The magnon edge current allows a convenient calculation of thermal Hall
coefficients and the orbital angular momentum gives correlation to the
Einstein-de Haas effect. We apply the calculations to the TKL and derive the
topological gyromagnetic ratio showing a nonzero Einstein-de Haas effect in the
zero temperature limit. Our results render the TKL as a potential platform for
quantum magnonics applications including high-precision mechanical sensors and
information transmission.
Quasiparticles with Weyl dispersion can display an abundance of novel
topological, thermodynamic and transport phenomena, which is why novel Weyl
materials and platforms for Weyl physics are being intensively looked for in
electronic, magnetic, photonic and acoustic systems. We demonstrate that
conducting materials in magnetic fields generically host Weyl excitations due
to the hybridisation of phonons with helicons, collective neutral modes of
electrons interacting with electromagnetic waves propagating in the material.
Such Weyl excitations are, in general, created by the interactions of helicons
with longitudinal acoustic phonons. An additional type of Weyl excitation in
polar crystals comes from the interaction between helicons and longitudinal
optical phonons. Such excitations can be detected in X-ray and Raman scattering
experiments. The existence of the Weyl excitations involving optical phonons in
the bulk of the materials also leads to the formation of topologically
protected surface arc states that can be detected via surface plasmon
resonance.
Using the tight-binding model, we investigate the valley current of the
`low-bi-up' and `low-bi-low' graphene junction, where `low' and `up' are
respectively the lower and upper graphene layers extended from the central AB
stacking bilayer graphene layer, `bi'. Source and drain electrodes connect with
the left and right monolayer regions, respectively, and thus the total current
is forced to flow through the interlayer path in the low-bi-up junction. We
measure valley current reversal (VCR) using the average of $\frac{1}{2}
\sum_{\nu =\pm}(T_{\nu,-\nu}-T_{\nu,\nu})$ per lateral wave number, where
$T_{\nu,\nu'}$ denotes the electron transmission rate from the left $K_{\nu'}$
valley to the right $K_{\nu}$ valley. Without the vertical electric field, the
VCR is less than half in both junctions. This VCR is attributed to
monolayer--bilayer matching. As the vertical field intensifies, the VCR
declines in the low-bi-low junction, but increases to about 0.8 in the
low-bi-up junction. This VCR enhancement originates from interlayer matching.
Analytic scattering matrixes elucidate these matching effects. Experiments of
VCR detection are also proposed.
The emergence of fractonic topological phases and novel universality classes
for quantum dynamics highlights the importance of dipolar symmetry in condensed
matter systems. In this work, we study the properties of symmetry-breaking
phases of the dipolar symmetries in fermionic models in various spatial
dimensions. In such systems, fermions obtain energy dispersion through dipole
condensation. Due to the nontrivial commutation between the translation
symmetry and dipolar symmetry, the Goldstone modes of the dipolar condensate
are strongly coupled to the dispersive fermions and naturally give rise to
non-Fermi liquids at low energies. The IR description of the dipolar
symmetry-breaking phase is analogous to the well-known theory of a Fermi
surface coupled to an emergent U(1) gauge field. We also discuss the crossover
behavior when the dipolar symmetry is slightly broken and the cases with
anisotropic dipolar conservation.
We theoretically describe a driven two-electron four-level double-quantum dot
(DQD) tunnel coupled to a fermionic sea by using the rate-equation formalism.
This approach allows to find occupation probabilities of each DQD energy level
in a relatively simple way, compared to other methods. Calculated dependencies
are compared with the experimental results. The system under study is
irradiated by a strong driving signal and as a result, one can observe
Landau-Zener-Stuckelberg-Majorana (LZSM) interferometry patterns which are
successfully described by the considered formalism. The system operation regime
depends on the amplitude of the excitation signal and the energy detuning,
therefore, one can transfer the system to the necessary quantum state in the
most efficient way by setting these parameters. Obtained results give insights
about initializing, characterizing, and controlling the quantum system states.
We study topological magnons on an anisotropic square-hexagon-octagon (SHO)
lattice which has been found by a two-dimensional Biphenylene network (BPN). We
propose the concepts of type-II Dirac magnonic states where new schemes to
achieve topological magnons are unfolded without requiring the
Dzyaloshinsky-Moriya interactions (DMIs). In the ferromagnetic states, the
topological distinctions at the type-II Dirac points along with one-dimensional
(1D) closed lines of Dirac magnon nodes are characterized by the $\mathbb{Z}_2$
invariant. We find pair annihilation of the Dirac magnons and use the Wilson
loop method to depict the topological protection of the band-degeneracy. The
Green's function approach is used to calculte chiral edge modes and magnon
density of states (DOS). We introduce the DMIs to gap the type-II Dirac magnon
points and demonstrate the Dirac nodal loops (DNLs) are robust against the DMIs
within a certain parameter range. The topological phase diagram of magnon bands
is given via calculating the Berry curvature and Chern number. We find that the
anomalous thermal Hall conductivity gives connection to the magnon edge
current. Furthermore, we derive the differential gyromagnetic ratio to exhibit
the Einstein-de Haas effect (EdH) of magnons with topological features.
One-dimensional anyonic models of the Hubbard type show intriguing
ground-state properties, effectively transmuting between Bose-Einstein and
Fermi-Dirac statistics. The simplest model that one can investigate is an
anyonic version of the bosonic Josephson junction, the repulsive anyon-Hubbard
dimer. In the following we find an exact duality relation to the Bethe-solvable
Bose-Hubbard dimer, which is well known from quantum optics and information
theory and has interesting connections to spin squeezing and entangled coherent
states. Conversely, we show that the anyonic Hubbard dimer has nontrivial
coherence properties that emerge from the anyonic statistics. In particular, we
find that coherences can be suppressed and amplified and show that these
features are remarkably robust against additional repulsive on-site
interactions highlighting the distinct nature of anyons.
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.
In the subcritical regime Erd\H{o}s-R\'enyi (ER) networks consist of finite
tree components, which are non-extensive in the network size. The distribution
of shortest path lengths (DSPL) of subcritical ER networks was recently
calculated using a topological expansion [E. Katzav, O. Biham and A.K.
Hartmann, Phys. Rev. E 98, 012301 (2018)]. The DSPL, which accounts for the
distance $\ell$ between any pair of nodes that reside on the same finite tree
component, was found to follow a geometric distribution of the form $P(L=\ell |
L < \infty) = (1-c) c^{\ell - 1}$, where $0 < c < 1$ is the mean degree of the
network. This result includes the contributions of trees of all possible sizes
and topologies. Here we calculate the distribution of shortest path lengths
$P(L=\ell | S=s)$ between random pairs of nodes that reside on the same tree
component of a given size $s$. It is found that $P(L=\ell | S=s) =
\frac{\ell+1}{s^{\ell}} \frac{(s-2)!}{(s-\ell-1)!}$. Surprisingly, this
distribution does not depend on the mean degree $c$ of the network from which
the tree components were extracted. This is due to the fact that the ensemble
of tree components of a given size $s$ in subcritical ER networks is sampled
uniformly from the set of labeled trees of size $s$ and thus does not depend on
$c$. The moments of the DSPL are also calculated. It is found that the mean
distance between random pairs of nodes on tree components of size $s$ satisfies
${\mathbb E}[L|S=s] \sim \sqrt{s}$, unlike small-world networks in which the
mean distance scales logarithmically with $s$.
We consider the entanglement entropy arising from edge-modes in Abelian
$p$-form topological field theories in $d$ dimensions on arbitrary spatial
topology and across arbitrary entangling surfaces. We find a series of
descending area laws plus universal corrections proportional to the Betti
numbers of the entangling surface, which can be taken as a higher-dimensional
version of the "topological entanglement entropy." Our calculation comes in two
flavors: firstly, through an induced edge-mode theory appearing on the
regulated entangling surface in a replica path integral and secondly through a
more rigorous definition of the entanglement entropy through an extended
Hilbert space. Along the way we establish several key results that are of their
own merit. We explain how the edge-mode theory is a novel combination of
$(p-1)$-form and $(d-p-2)$-form Maxwell theories linked by a chirality
condition, in what we coin a "chiral mixed Maxwell theory." We explicitly
evaluate the thermal partition function of this theory. Additionally we show
that the extended Hilbert space is completely organized into representations of
an infinite-dimensional, centrally extended current algebra which naturally
generalizes 2d Kac-Moody algebras to arbitrary dimension and topology. We
construct the Verma modules and the representation characters of this algebra.
Lastly, we connect the two approaches, showing that the thermal partition
function of the chiral mixed Maxwell theory is precisely an extended
representation character of our current algebra, establishing an exact
correspondence of the edge-mode theory and the entanglement spectrum.

Date of feed: Wed, 01 Nov 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) **Tight-binding theory of spin-spin interactions, Curie temperatures, and quantum Hall effects in topological (Hg,Cr)Te in comparison to non-topological (Zn,Cr)Te, and (Ga,Mn)N. (arXiv:2310.19856v1 [cond-mat.mtrl-sci])**

Cezary Śliwa, Tomasz Dietl

**Self-duality under gauging a non-invertible symmetry. (arXiv:2310.19867v1 [hep-th])**

Yichul Choi, Da-Chuan Lu, Zhengdi Sun

**Connecting the avoided quantum critical point to the magic-angle transition in three-dimensional Weyl semimetals. (arXiv:2310.19876v1 [cond-mat.dis-nn])**

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

**Magnetotransport in spin-orbit coupled noncentrosymmetric and Weyl metals. (arXiv:2310.19877v1 [cond-mat.mes-hall])**

Gautham Varma K, Azaz Ahmad, Sumanta Tewari, G. Sharma

**Electrical Tuning of Neutral and Charged Excitons with 1-nm Gate. (arXiv:2310.19895v1 [cond-mat.mes-hall])**

Jawaher Almutlaq (1), Jiangtao Wang (2), Linsen Li (1), Chao Li (1), Tong Dang (2), Vladimir Bulović (2), Jing Kong (2), Dirk Englund (1)

**Non-bosonic moir\'e excitons. (arXiv:2310.19931v1 [cond-mat.mes-hall])**

Tsung-Sheng Huang, Peter Lunts, Mohammad Hafezi

**Electron Interactions in Rashba Materials. (arXiv:2310.20084v1 [cond-mat.supr-con])**

Yasha Gindikin, Alex Kamenev

**Rashba spin splitting based on trilayer graphene systems. (arXiv:2310.20136v1 [cond-mat.mes-hall])**

Xinjuan Cheng, Liangyao Xiao, Xuechao Zhai

**Tunnel Valley Current Filter in the Partially Overlapped Graphene under the Vertical Electric Field. (arXiv:2310.20139v1 [cond-mat.mes-hall])**

Ryo Tamura

**Low-dimensional polaritonics: Emergent non-trivial topology on exciton-polariton simulators. (arXiv:2310.20166v1 [cond-mat.mes-hall])**

Konstantin Rips

**Phase-Modulated Elastic Properties of Two-Dimensional Magnetic FeTe: Hexagonal and Tetragonal Polymorphs. (arXiv:2310.20167v1 [cond-mat.mtrl-sci])**

Yunfei Yu, Mo Cheng, Zicheng Tao, Wuxiao Han, Guoshuai Du, Yanfeng Guo, Jianping Shi, Yabin Chen

**Topological speckles. (arXiv:2310.20213v1 [physics.optics])**

Yure M. I. A. Rodrigues, Matheus F. V. Oliveira, Andre M. C. Souza, Marcelo L. Lyra, Francisco A. B. F. de Moura, Guilherme M. A. Almeida

**Dissipation entanglement control of two coupled qubits via strong driving fields. (arXiv:2310.20229v1 [quant-ph])**

M. V. Bastrakova, V. O. Munyaev

**Enhanced dendrite nucleation and Li-clustering at vacancies on graphene. (arXiv:2310.20241v1 [cond-mat.mtrl-sci])**

Jonathon Cottom, Qiong Cai, Emilia Olsson

**Topological plasma transport from a diffusion view. (arXiv:2310.20244v1 [physics.plasm-ph])**

Zhoufei Liu, Jiping Huang

**Emergent topological ordered phase for the Ising-XY Model revealed by cluster-updating Monte-Carlo method. (arXiv:2310.20314v1 [cond-mat.quant-gas])**

Heyang Ma, Wanzhou Zhang, Chengxiang Ding, Youjin Deng

**de Haas-van Alphen spectroscopy and fractional quantization of magnetic-breakdown orbits in moir\'e graphene. (arXiv:2310.20338v1 [cond-mat.mes-hall])**

Matan Bocarsly, Matan Uzan, Indranil Roy, Sameer Grover, Jiewen Xiao, Zhiyu Dong, Mikhail Labendik, Aviram Uri, Martin E. Huber, Yuri Myasoedov, Kenji Watanabe, Takashi Taniguchi, Binghai Yan, Leonid S. Levitov, Eli Zeldov

**Signature of Dirac Semimetal in Harmonic-honeycomb ReO3. (arXiv:2310.20341v1 [cond-mat.mtrl-sci])**

Yifeng Han, Cuiqun Chen, Hualei Sun, Shuang Zhao, Long Jiang, Yuxuan Liu, Zhongxiong Sun, Meng Wang, Hongliang Dong, Ziyou Zhang, Zhiqiang Chen, Bin Chen, Dao-Xin Yao, Man-Rong Li

**Chiral charge density wave and backscattering-immune orbital texture in monolayer 1T-TiTe2. (arXiv:2310.20373v1 [cond-mat.mtrl-sci])**

Mingqiang Ren, Fangjun Cheng, Yufei Zhao, Mingqiang Gu, Qiangjun Cheng, Binghai Yan, Qihang Liu, Xucun Ma, Qikun Xue, Can-Li Song

**Intercellular Friction and Motility Drive Orientational Order in Cell Monolayers. (arXiv:2310.20465v1 [cond-mat.soft])**

Michael Chiang, Austin Hopkins, Benjamin Loewe, M. Cristina Marchetti, Davide Marenduzzo

**Hidden Real Topology and Unusual Magnetoelectric Responses in Monolayer Antiferromagnetic Cr$_2$Se$_2$O. (arXiv:2310.20510v1 [cond-mat.mtrl-sci])**

Jialin Gong, Yang Wang, Yilin Han, Zhenxiang Cheng, Xiaotian Wang, Zhi-Ming Yu, Yugui Yao

**Berry Curvature Dipole and its Strain Engineering in Layered Phosphorene. (arXiv:2310.20543v1 [cond-mat.mes-hall])**

Arka Bandyopadhyay, Nesta Benno Joseph, Awadhesh Narayan

**Finite Temperature Entanglement Negativity of Fermionic Symmetry Protected Topological Phases and Quantum Critical Points in One Dimension. (arXiv:2310.20566v1 [cond-mat.str-el])**

Wonjune Choi, Michael Knap, Frank Pollmann

**Proximity effect induced intriguing superconductivity in van der Waals heterostructure of magnetic topological insulator and conventional superconductor. (arXiv:2310.20576v1 [cond-mat.supr-con])**

Peng Dong, Xiang Zhou, Xiaofei Hou, Jiadian He, Yiwen Zhang, Yifan Ding, Xiaohui Zeng, Jinghui Wang, Yueshen Wu, Kenji Watanabe, Takashi Taniguchi, Wei Xia, Yanfeng Guo, Yulin Chen, Wei Li, Jun Li

**Mathematical results on the chiral model of twisted bilayer graphene (with an appendix by Mengxuan Yang and Zhongkai Tao). (arXiv:2310.20642v1 [cond-mat.mes-hall])**

Maciej Zworski, Mengxuan Yang, Zhongkai Tao

**Strange Metal to Insulator Transitions in the Lowest Landau Level. (arXiv:2310.20659v1 [cond-mat.str-el])**

Ben Currie, Evgeny Kozik

**Kondo effect and its destruction in hetero-bilayer transition metal dichalcogenides. (arXiv:2310.20676v1 [cond-mat.str-el])**

Fang Xie, Lei Chen, Qimiao Si

**Intertwined Dirac cones induced by anisotropic coupling in antiferromagnetic topological insulator. (arXiv:2310.20693v1 [cond-mat.mes-hall])**

Yiliang Fan, Huaiqiang Wang, Peizhe Tang, Shuichi Murakami, Xiangang Wan, Haijun Zhang, Dingyu Xing

**Universal localization-delocalization transition in chirally-symmetric Floquet drives. (arXiv:2310.20696v1 [cond-mat.dis-nn])**

Adrian B. Culver, Pratik Sathe, Albert Brown, Fenner Harper, Rahul Roy

**Topological magnons on the triangular kagome lattice. (arXiv:2207.02886v2 [cond-mat.mes-hall] UPDATED)**

Meng-Han Zhang, Dao-Xin Yao

**Weyl excitations via helicon-phonon mixing in conducting materials. (arXiv:2212.08213v3 [cond-mat.mes-hall] UPDATED)**

Dmitry K. Efimkin, Sergey Syzranov

**Origins of Valley Current Reversal in Partially Overlapped Graphene Layers. (arXiv:2301.10978v2 [cond-mat.mes-hall] UPDATED)**

Ryo Tamura

**Non-Fermi Liquids from Dipolar Symmetry Breaking. (arXiv:2304.01181v3 [cond-mat.str-el] UPDATED)**

Amogh Anakru, Zhen Bi

**Rate-equation approach for a charge qudit. (arXiv:2304.04186v2 [cond-mat.mes-hall] UPDATED)**

M. P. Liul, A. I. Ryzhov, S. N. Shevchenko

**Type-II Dirac points and Dirac nodal loops on the magnons of square-hexagon-octagon lattice. (arXiv:2305.16419v2 [cond-mat.mes-hall] UPDATED)**

Meng-Han Zhang, Dao-Xin Yao

**Coherence Properties of the Repulsive Anyon-Hubbard Dimer. (arXiv:2306.00073v2 [cond-mat.quant-gas] UPDATED)**

Martin Bonkhoff, Simon B. Jäger, Imke Schneider, Axel Pelster, Sebastian Eggert

**Dynamics of electronic states in the insulating Intermediate surface phase of 1T-TaS$_2$. (arXiv:2307.06444v3 [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

**The distribution of shortest path lengths on trees of a given size in subcritical Erdos-Renyi networks. (arXiv:2310.01591v2 [cond-mat.stat-mech] UPDATED)**

Barak Budnick, Ofer Biham, Eytan Katzav

**Entanglement in BF theory II: Edge-modes. (arXiv:2310.18391v1 [hep-th] CROSS LISTED)**

Jackson R. Fliss, Stathis Vitouladitis

Found 4 papers in prb Photonic topological edge states have shown powerful capabilities to manipulate light propagations. In particular, the all-dielectric structures serve as a promising platform to support the topological states, in which the nontrivial photonic band is usually acquired by engineered shape and lattice … We explore the spin density and charge currents arising on the surface of a topological insulator and in a two-dimensional Rashba metal due to magnetization gradients. For topological insulators a single interconversion coefficient controls the generation of both quantities. This coefficient is quan… We have investigated the structure of hydrogen-intercalated quasifreestanding monolayer graphene (QFMLG) grown on $6H$-SiC(0001) by employing total-reflection high-energy positron diffraction. At least nine diffraction spots of the zeroth-order Laue zone were resolved along $〈11\overline{2}0〉$ and t… Half-Heusler systems host a plethora of different ground states, especially with nontrivial topology. However, there is still a lack of spectroscopic insight into the corresponding band inversion in this family. In this work, we locally explore the half-Heuslers $\mathrm{Y}T\mathrm{Bi}$ ($T=\text{Pt…

Date of feed: Wed, 01 Nov 2023 04:17:02 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) **Rotation-configured topological phase transition in triangle photonic lattices**

Chen Chen, Wange Song, Zhiyuan Lin, Shengjie Wu, Shining Zhu, and Tao Li

Author(s): Chen Chen, Wange Song, Zhiyuan Lin, Shengjie Wu, Shining Zhu, and Tao Li

[Phys. Rev. B 108, 134119] Published Tue Oct 31, 2023

**Anatomy of spin and current generation from magnetization gradients in topological insulators and Rashba metals**

Panagiotis Kotetes, Hano O. M. Sura, and Brian M. Andersen

Author(s): Panagiotis Kotetes, Hano O. M. Sura, and Brian M. Andersen

[Phys. Rev. B 108, 155310] Published Tue Oct 31, 2023

**Determination of the spacing between hydrogen-intercalated quasifreestanding monolayer graphene and $6H$-SiC(0001) using total-reflection high-energy positron diffraction**

Matthias Dodenhöft, Izumi Mochizuki, Ken Wada, Toshio Hyodo, Peter Richter, Philip Schädlich, Thomas Seyller, and Christoph Hugenschmidt

Author(s): Matthias Dodenhöft, Izumi Mochizuki, Ken Wada, Toshio Hyodo, Peter Richter, Philip Schädlich, Thomas Seyller, and Christoph Hugenschmidt

[Phys. Rev. B 108, 155438] Published Tue Oct 31, 2023

**Tuning the topological character of half-Heusler systems: A comparative study on $\mathrm{Y}T\mathrm{Bi}\phantom{\rule{0.16em}{0ex}}(T=\mathrm{Pd},\phantom{\rule{0.16em}{0ex}}\mathrm{Pt})$**

J. C. Souza, M. V. Ale Crivillero, H. Dawczak-Dębicki, Andrzej Ptok, P. G. Pagliuso, and S. Wirth

Author(s): J. C. Souza, M. V. Ale Crivillero, H. Dawczak-Dębicki, Andrzej Ptok, P. G. Pagliuso, and S. Wirth

[Phys. Rev. B 108, 165154] Published Tue Oct 31, 2023

Found 3 papers in prl An experiment combines the two-dimensional semiconductor WSe${}_{2}$ with a spin-orbit-coupled microring resonator to demonstrate the high-purity generation of twisted single photons and its convenient switching between different orbital angular momentum states. Energy-loss spectroscopy mapping of a silicon point defect in graphene demonstrates real-space mapping of specific electronic excitations at the single-atom scale. Linear spin wave theory (LSWT) is the standard technique to compute the spectra of magnetic excitations in quantum materials. In this Letter, we show that LSWT, even under ordinary circumstances, may fail to implement the symmetries of the underlying ordered magnetic Hamiltonian leading to spurious …

Date of feed: Wed, 01 Nov 2023 04:17:06 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) **High-Purity Generation and Switching of Twisted Single Photons**

Haoqi Zhao, Yichen Ma, Zihe Gao, Na Liu, Tianwei Wu, Shuang Wu, Xilin Feng, James Hone, Stefan Strauf, and Liang Feng

Author(s): Haoqi Zhao, Yichen Ma, Zihe Gao, Na Liu, Tianwei Wu, Shuang Wu, Xilin Feng, James Hone, Stefan Strauf, and Liang Feng

[Phys. Rev. Lett. 131, 183801] Published Tue Oct 31, 2023

**Probing a Defect-Site-Specific Electronic Orbital in Graphene with Single-Atom Sensitivity**

Mingquan Xu, Aowen Li, Stephen J. Pennycook, Shang-Peng Gao, and Wu Zhou

Author(s): Mingquan Xu, Aowen Li, Stephen J. Pennycook, Shang-Peng Gao, and Wu Zhou

[Phys. Rev. Lett. 131, 186202] Published Tue Oct 31, 2023

**Spurious Symmetry Enhancement in Linear Spin Wave Theory and Interaction-Induced Topology in Magnons**

Matthias Gohlke, Alberto Corticelli, Roderich Moessner, Paul A. McClarty, and Alexander Mook

Author(s): Matthias Gohlke, Alberto Corticelli, Roderich Moessner, Paul A. McClarty, and Alexander Mook

[Phys. Rev. Lett. 131, 186702] Published Tue Oct 31, 2023

Found 1 papers in nano-lett

Date of feed: Tue, 31 Oct 2023 13:11:10 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] Converting the Bulk Transition Metal Dichalcogenides Crystal into Stacked Monolayers via Ethylenediamine Intercalation**

Yeojin Ahn, Gyubin Lee, Namgyu Noh, Chulwan Lee, Duc Duy Le, Sunghun Kim, Yeonghoon Lee, Jounghoon Hyun, Chan-young Lim, Jaehun Cha, Mingi Jho, Seonggeon Gim, Jonathan D. Denlinger, Chan-Ho Yang, Jong Min Yuk, Myung Joon Han, and Yeongkwan KimNano LettersDOI: 10.1021/acs.nanolett.3c02268

Found 4 papers in acs-nano

Date of feed: Tue, 31 Oct 2023 13:07:00 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) **[ASAP] Chalcogen and Pnictogen Bonding-Modulated Multiple-Constituent Chiral Self-Assemblies**

Yiran Xia, Aiyou Hao, and Pengyao XingACS NanoDOI: 10.1021/acsnano.3c08590

**[ASAP] Challenging Prevalent Solid Electrolyte Interphase (SEI) Models: An Atom Probe Tomography Study on a Commercial Graphite Electrode**

Isabel Pantenburg, Marvin Cronau, Torben Boll, Annalena Duncker, and Bernhard RolingACS NanoDOI: 10.1021/acsnano.3c06560

**[ASAP] Nanoporous MoS2 Field-Effect Transistor Based Artificial Olfaction: Achieving Enhanced Volatile Organic Compound Detection Inspired by the Drosophila Olfactory System**

Junoh Shim, Anamika Sen, Keehyun Park, Heekyeong Park, Arindam Bala, Hyungjun Choi, Mincheol Park, Jae Young Kwon, and Sunkook KimACS NanoDOI: 10.1021/acsnano.3c07045

**[ASAP] Differing Electrolyte Implication on Anion and Cation Intercalation into Graphite**

Yaqi He, Cheng Zhen, Menghao Li, Xianbin Wei, Cheng Li, Yuanmin Zhu, Xuming Yang, and M. Danny GuACS NanoDOI: 10.1021/acsnano.3c07053

Found 2 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) **Gate-controlled suppression of light-driven proton transport through graphene electrodes**

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**Graphene/silicon heterojunction for reconfigurable phase-relevant activation function in coherent optical neural networks**

< author missing >

Found 1 papers in scipost **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) **Dipole symmetries from the topology of the phase space and the constraints on the low-energy spectrum, by Tomas Brauner, Naoki Yamamoto, Ryo Yokokura**

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Submitted on 2023-10-31, refereeing deadline 2023-12-06.