Found 32 papers in cond-mat Symmetry topological field theory (SymTFT) gives a holographic correspondence
between systems with a global symmetry and a higher-dimensional topological
field theory. In this framework, classification of gapped phases of matter in
spacetime dimension 1+1D correspond to classifications of mechanisms to confine
the SymTFT by condensing anyons. In this work, we extend these results to
characterize gapless symmetry-protected topological states: symmetry-enriched
gapless phases or critical points that exhibit edge modes protected by symmetry
and topology. We establish a one-to-one correspondence between 1+1D bosonic
gSPTs, and partially-confined boundaries of 2+1D SymTFTs. From general physical
considerations, we determine the set of data and consistency conditions
required to define a 1+1D gSPT, and show that this data precisely matches that
of symmetry-preserving partial confinement (or partially gapped boundaries) of
2+1D quantum double models. We illustrate this correspondence through a
dimensional reduction (thin-slab) construction, which enables a
physically-intuitive derivation of how properties of the gSPT such as edge
modes, emergent anomalies, and stability to perturbations arise from the SymTFT
perspective.ditions required to define a 1+1D gSPT and show that they fully
determine the physics of the gSPT including edge modes and emergent anomaly.
The complete characterization of Floquet topological phases is usually hard
for the requirement of information about the micromotion throughout the entire
driving period. Here we develop a full and feasible dynamical characterization
theory for the $Z_{2}$ Floquet topological phases by quenching the system from
a trivial and static initial state to the Floquet topological regime through
suddenly changing the parameters and turning on the periodic driving. By
measuring the minimal information of Floquet bands via the stroboscopic
time-averaged spin polarizations, we show that the topological spin texture
patterns emerging on certain discrete momenta of Brillouin zone called the $0$
or $\pi$ gap highest-order band-inversion surfaces provide a measurable
dynamical $Z_{2}$ Floquet invariant, which uniquely determines the Floquet
boundary modes in the corresponding quasienergy gap. The applications of our
theory are illustrated via one- and two-dimensional models that are accessible
in current quantum simulation experiments. Our work provides a highly feasible
way to detect the $Z_{2}$ Floquet topological phases and shall advance the
experimental studies.
Central to the enigma of the cuprates is ubiquitous electronic inhomogeneity
arising from a variety of electronic orders that coexist with
superconductivity, the individual signatures of which have been impossible to
disentangle despite four decades of intense research. This strong nanoscale
inhomogeneity complicates interpretation of measurements both by probes which
average over this inhomogeneity and those, like scanning tunneling microscopy
(STM), which should be able to spatially resolve variations driven by both
order and inhomogeneity. Here, we develop a novel technique that directly
acknowledges this electronic inhomogeneity and extracts statistically
significant features from scanning tunneling spectroscopic data. Applying our
novel technique to single and bilayer Bi-based cuprates spanning a large doping
range, we peer through local inhomogeneities and find that the gap breaks
translational and rotational symmetries and varies periodically in a four-fold
pattern. Our direct observation of a symmetry breaking gap in the single
particle tunneling spectra adds strong credence to the pair density wave
hypotheses supposed to exist in these materials. We also discuss various
implications of our observations and, in particular, how they can explain the
origin of the low energy checkerboard pattern.
In high-sensitivity bolometers and calorimeters, the photon absorption often
occurs at a finite distance from the temperature sensor to accommodate antennas
or avoid the degradation of superconducting circuitry exposed to radiation. As
a result, thermal propagation from the input to the temperature readout can
critically affect detector performance. In this report we model the performance
of a graphene bolometer, accounting for electronic thermal diffusion and
dissipation via electron-phonon coupling at low temperatures in three regimes:
clean, supercollision, and resonant scattering. Our results affirm the
feasibility of a superconducting readout without Cooper-pair breaking by mid-
and near-infrared photons, and provide a recipe for designing graphene
absorbers for calorimetric single-photon detectors. We investigate the tradeoff
between the input-readout distance and detector efficiency, and predict an
intrinsic timing jitter of ~2.7 ps. Based on our result, we propose a
spatial-mode-resolving photon detector to increase communication bandwidth.
In materials without inversion symmetry, Berry curvature dipole (BCD) arises
from the uneven distribution of Berry curvature in momentum space. This leads
to nonlinear anomalous Hall effects even in systems with preserved
time-reversal symmetry. A key goal is to engineer systems with prominent BCD
near the Fermi level. Notably, TaAs, a type-I Weyl semimetal, exhibits
substantial Berry curvature but a small BCD around the Fermi level. In this
study, we employed first-principles methods to comprehensively investigate the
BCD in TaAs. Our findings reveal significant cancellation effects not only
within individual Weyl points but crucially, among distinct Weyl point pairs in
bulk TaAs. We propose a strategic approach to enhance the BCD in TaAs by
employing a layer-stacking technique. This greatly amplifies the BCD compared
to the bulk material. By tuning the number of slab layers, we can selectively
target specific Weyl point pairs near the Fermi level, while quantum
confinement effects suppress contributions from other pairs, mitigating
cancellation effects. Especially, the BCD of an 8-layer TaAs slab surpasses the
bulk value near the Fermi level by orders of magnitude.
Graphene quantum dots provide promising platforms for hosting spin, valley,
or spin-valley qubits. Taking advantage of the electrically generated band gap
and the ambipolar nature, high-quality quantum dots can be defined in bilayer
graphene using natural p-n junctions as tunnel barriers. In these devices,
demonstrating the electrical tunability of the p-n junction barriers and
understanding its physical mechanism, especially in the few-electron regime,
are essential for further manipulating electron's quantum degrees of freedom to
encode qubits. Here, we show the electrostatic confinement of single quantum
dots in bilayer graphene using natural p-n junctions. When the device is
operated in the few-electron regime, the electron tunneling rate is found to be
monotonically tuned by varying gate voltages, which can be well understood from
the view of manipulating the p-n junction barriers. Our results provide an
insightful understanding of electrostatic confinement using natural p-n
junctions in bilayer graphene, which is beneficial for realizing graphene-based
qubits.
In this work, we study the transport of vorticity on curved dynamical
two-dimensional magnetic membranes. We find that topological transport can be
controlled by geometrically reducing symmetries, which enables processes that
are not present in flat magnetic systems. To this end, we construct a vorticity
3-current which obeys a continuity equation. This continuity equation is immune
to local fluctuations of the magnetic texture as well as spatiotemporal
fluctuations of the membrane. We show how electric current can manipulate
vortex transport in geometrically nontrivial magnetic systems. As an
illustrative example, we propose a minimal setup that realizes an
experimentally feasible energy storage device.
Locally noncentrosymmetric structures in crystals are attracting much
attention owing to emergent phenomena associated with the sublattice degree of
freedom. The newly discovered heavy fermion superconductor CeRh$_2$As$_2$ is
considered to be an excellent realization of this class. Angle-resolved
photoemission spectroscopy experiments recently observed low-energy spectra of
electron and hole bands and characteristic Van Hove singularities, stimulating
us to explore the electronic correlation effect on the band structure. In this
Letter, we theoretically study the electronic state and topological
superconductivity from first principles. Owing to the Coulomb repulsion $U$ of
Ce 4$f$ electrons, the low-energy band structure is modified in accordance with
the experimental result. We show that Fermi surfaces change significantly from
a complicated three-dimensional structure to a simple two-dimensional one.
Fermi surface formulas for one-dimensional $\mathbb{Z}_2$ invariants in class D
indicate topological crystalline superconductivity protected by the glide
symmetry in a broad region for $U$. The classification of superconducting gap
structure reveals topologically protected excitation gap and node. Our findings
of the correlation-induced evolution of electronic structure provide a basis to
clarify the unusual phase diagram of CeRh$_2$As$_2$ including
superconductivity, magnetic order, and quadrupole density wave, and accelerate
the search for topological superconductivity in strongly correlated electron
systems.
Thermoelectric materials operating at cryogenic temperatures are in high
demand for efficient cooling and power generation in applications ranging from
superconductors to quantum computing. The narrow band-gap semiconductor FeSb2,
known for its colossal Seebeck coefficient, holds promise for such
applications, provided its thermal conductivity value can be reduced. This
study investigates the impact of isoelectronic substitution (Bi) and hole
doping (Pb) at the Sb site on the transport properties of FeSb2, with a
particular focus on thermal conductivity (\k{appa}). Polycrystalline FeSb2
powder, along with Bi- and Pb-doped samples, were synthesized using a simple
co-precipitation approach, followed by thermal treatment in an H2 atmosphere.
XRD and SEM analysis confirms the formation of the desired phase pre- and
post-consolidation using spark plasma sintering (SPS). The consolidation
process resulted in a high compaction density and the formation of
submicrometer-sized grains, as substantiated by electron backscattered
diffraction (EBSD) analysis. Substituting 1% of Bi and Pb at the Sb site
successfully suppressed the thermal conductivity (\k{appa}) from ~15 W/m-K in
pure FeSb2 to ~10 and ~8.7 W/m-K, respectively. Importantly, resistivity
measurements revealed a metal-to-insulator transition at around 6.5 K in
undoped FeSb2 and isoelectronically Bi-substituted FeSb2, suggesting the
existence of metallic surface states and provides valuable evidence for the
perplexing topological behavior exhibited by FeSb2.
Based on the full Hamiltonian of bilayer graphene, phase transitions are
realized by the change of the in-plane magnetic field and the electrical bias
in bilayer graphene. We show that the engineering of Chern numbers of four
bands is possible by an applied in-plane magnetic field and an electrical bias
in bilayer graphene. Our results are promising for the exploration of new
topological phenomena in 2D materials.
Based on first-principles calculations, we predict that nitrogen atoms can
assemble into a single-layer double kagome lattice (DKL), which possesses the
characteristics of an intrinsic direct band gap semiconductor, boasting a
substantial band gap of 3.460 eV. The DKL structure results in a flat valence
band with high effective mass and a conduction band with small effective mass
comes from Dirac electrons. These distinctive band edges lead to a significant
disparity in carrier mobilities, with electron mobility being four orders of
magnitude higher than that of holes. The presence of flat band in DKL-nitrogene
can be further discerned through the enhanced optical absorption and correlated
effects as exemplified by hole-induced ferromagnetism. Interestingly,
DKL-nitrogene exhibits inherent second-order topological states, confirmed by a
non-trivial second Stiefel-Whitney number and the presence of 1D floating edge
states and 0D corner states within the bulk band gap. Additionally, the robust
N-N bonds and the lattice's bending structure ensure thermodynamic stability
and mechanical stiffness. These attributes make it exceptionally stable for
potential applications in nano-devices.
We consider the Casimir pressure between two graphene sheets and
contributions to it determined by evanescent and propagating waves with
different polarizations. For this purpose, the derivation of the 2-dimensional
(2D) Fresnel reflection coefficients on a graphene sheet is presented in terms
of the transverse and longitudinal dielectric permittivities of graphene with
due account of the spatial dispersion. The explicit expressions for both
dielectric permittivities as the functions of the 2D wave vector, frequency,
and temperature are written along the real frequency axis in the regions of
propagating and evanescent waves and at the pure imaginary Matsubara
frequencies using the polarization tensor of graphene. It is shown that in the
application region of the Dirac model nearly the total value of the Casimir
pressure between two graphene sheets is determined by the electromagnetic field
with transverse magnetic (TM) polarization. By using the Lifshitz formula
written along the real frequency axis, the contributions of the TM-polarized
propagating and evanescent waves into the total pressure are determined. By
confronting these results with the analogous results found for plates made of
real metals, the way for bringing the Lifshitz theory using the realistic
response functions in agreement with measurements of the Casimir force between
metallic test bodies is pointed out.
It is known that a two dimensional dimerized Su-Schrieffer-Heeger model can
produce a nontrivial topological phase. It is a simple nearest-neighbor model
with either two or four lattice sites in in two dimensions.
Su-Schrieffer-Heeger model is easy to analyse but neglects important
interaction in physical systems. In this work, an extended version of this
model is proposed which includes all possible second nearest neighbor
interactions in order to make it more feasible to describe realistic systems.
The topological phases and properties of the model are characterized using a
polarization invariant. It is further shown that second nearest neighbor
interactions can be used to evoke a topological phase transition as well.
Gaining insight into the characteristics of epitaxial complex oxide films is
essential to control the behavior of devices and catalytic processes. It is
known that substrate induced strain, doping, and layer growth can affect the
electronic and magnetic properties of the film's bulk. In this study, we
demonstrate a clear distinction between the bulk and surface of thin films of
La0.67Sr0.33MnO3 in terms of chemical composition, electronic disorder, and
surface morphology. We employed a combined experimental approach of X-ray based
characterization methods and scanning probe microscopy. X-ray diffraction and
resonant X-ray reflectivity revealed surface non-stochiometry in the strontium
and lanthanum, as well as an accumulation of oxygen vacancies. Scanning
tunneling microscopy showed a staggered growth surface morphology accompanied
by an electronic phase separation (EPS) related to this non-stochiometry. The
EPS is likely responsible for the temperature-dependent resistivity transition
and is a cause of a proposed mixed-phase ferromagnetic and paramagnetic state
near room temperature in these thin films.
The present work aims at providing a systematic analysis of the current
density versus momentum characteristics for a fermionic superfluid throughout
the BCS-BEC crossover, even in the fully homogeneous case. At low temperatures,
where pairing fluctuations are not strong enough to invalidate a quasi-particle
approach, a sharp threshold for the inception of a back-flow current is found,
which sets the onset of dissipation and identifies the critical momentum
according to Landau. This momentum is seen to smoothly evolve from the BCS to
the BEC regimes, whereby a single expression for the single-particle current
density that includes pairing fluctuations enables us to incorporate on equal
footing two quite distinct dissipative mechanisms, namely, pair-breaking and
phonon excitations in the two sides of the BCS-BEC crossover, respectively. At
finite temperature, where thermal fluctuations broaden the excitation spectrum
and make the dissipative (kinetic and thermal) mechanisms intertwined with each
other, an alternative criterion due to Bardeen is instead employed to signal
the loss of superfluid behavior. In this way, detailed comparison with
available experimental data in linear and annular geometries is significantly
improved with respect to previous approaches, thereby demonstrating the crucial
role played by quantum fluctuations in renormalizing the single-particle
excitation spectrum.
Defects in wide bandgap semiconductors have recently emerged as promising
candidates for solid-state quantum optical technologies. Electrical excitation
of emitters may pave the way to scalable on-chip devices, and therefore is
highly sought after. However, most wide band gap materials are not amenable to
efficient doping, which in turn poses challenges on efficient electrical
excitation and on-chip integration. Here, we demonstrate for the first time
room temperature electroluminescence from isolated colour centres in hexagonal
boron nitride (hBN). We harness the van der Waals (vdW) structure of
two-dimensional materials, and engineer nanoscale devices comprised of graphene
- hBN - graphene tunnel junctions. Under an applied bias, charge carriers are
injected into hBN, and result in a localised light emission from the hBN colour
centres. Remarkably, our devices operate at room temperature and produce
robust, narrowband emission spanning a wide spectral range - from the visible
to the near infrared. Our work marks an important milestone in van der Waals
materials and their promising attributes for integrated quantum technologies
and on-chip photonic circuits.
Dielectric interfaces are crucial to the behavior of charged membranes, from
graphene to synthetic and biological lipid bilayers. Understanding electrolyte
behavior near these interfaces remains a challenge, especially in the case of
rough dielectric surfaces. A lack of analytical solutions consigns this problem
to numerical treatments. We report an analytic method for determining
electrostatic potentials near curved dielectric membranes in a two-dimensional
periodic 'slab' geometry using a periodic summation of Green's functions. This
method is amenable to simulating arbitrary groups of charges near surfaces with
two-dimensional deformations. We concentrate on one-dimensional undulations. We
show that increasing membrane undulation increases the asymmetry of interfacial
charge distributions due to preferential ionic repulsion from troughs. In the
limit of thick membranes we recover results mimicking those for electrolytes
near a single interface. Our work demonstrates that rough surfaces generate
charge patterns in electrolytes of charged molecules or mixed-valence ions.
We investigate the periodic Anderson model of the bulk samarium hexaboride in
the slave-boson framework assuming the presence of ferromagnetic impurities.
Our analysis provides a strong evidence that the system is in the quantum
anomalous Hall phase when the exchange interaction is not zero. Thereafter, we
show that the bulk samarium hexaboride is a strong topological insulator
calculating Z2 invariant using the Fu-Kane-Mele formalism.
The large deviations properties of trajectory observables for chaotic
non-invertible deterministic maps as studied recently by N. R. Smith, Phys.
Rev. E 106, L042202 (2022) and by R. Gutierrez, A. Canella-Ortiz, C.
Perez-Espigares, arXiv:2304.13754 are revisited in order to analyze in detail
the similarities and the differences with the case of stochastic Markov chains.
To be concrete, we focus on the simplest example displaying the two essential
properties of local-stretching and global-folding, namely the doubling map $
x_{t+1} = 2 x_t [\text{mod} 1] $ on the real-space interval $x \in [0,1[$ that
can be also analyzed via the decomposition $x= \sum_{l=1}^{+\infty}
\frac{\sigma_l}{2^l} $ into binary coefficients $\sigma_l=0,1$. The large
deviations properties of trajectory observables can be studied either via
deformations of the forward deterministic dynamics or via deformations of the
backward stochastic dynamics. Our main conclusions concerning the construction
of the corresponding Doob canonical conditioned processes are: (i) non-trivial
conditioned dynamics can be constructed only in the backward stochastic
perspective where the reweighting of existing transitions is possible, and not
in the forward deterministic perspective ; (ii) the corresponding conditioned
steady state is not smooth on the real-space interval $x \in [0,1[$ and can be
better characterized in the binary space $\sigma_{l=1,2,..,+\infty}$. As a
consequence, the backward stochastic dynamics in the binary space is also the
most appropriate framework to write the explicit large deviations at level 2
for the probability of the empirical density of long backward trajectories.
Lattice defects have interesting effects in some quantum Hamiltonians. Here
we show how topological crystalline defects can produce qualitatively new
effects by coupling to electric field probes such as Raman scattering, even
when they do not appear in the low-energy Hamiltonian but rather only in the
probe response theory. To show this we consider an antiferromagnetic spin-1/2
model $H_{spin}$ on a zigzag chain. Crystalline domain walls between two zigzag
domains appear as at most local defects in $H_{spin}$, but as topological (not
locally creatable) defects in the Raman operator $R$ of inelastic photon
scattering. Using TEBD numerics, bosonization, and mean field, we show that a
finite density of crystalline domain walls shifts the entire Raman signal to
produce an effective gap. This lattice-defect-induced Raman gap closes and
reopens in applied magnetic fields. We discuss the effect in terms of photons
sensing the lattice defects within $R$ as spin-dimerization domain walls, with
$Z_2$ character, and a resulting shift of the probed wavevector from $q=0$ to
$\pi+\delta q$, giving an $\textit{O}(1)$ change in contrast to local defects.
The magneto-Raman singularity from topological lattice defects here relies on
the $H_{spin}$ spinon liquid state, suggesting future applications using
lattice topological defects to modify response-theory operators independently
of $H$ and thereby generate new probes of quantum phases.
In this paper, we construct new models for the Anderson duals $(I\Omega^G)^*$
to the stable tangential $G$-bordism theories and their differential
extensions. The cohomology theory $(I\Omega^G)^*$ is conjectured by Freed and
Hopkins [FH21] to classify deformation classes of possibly non-topological
invertible quantum field theories (QFT's). Our model is made by abstractizing
certain properties of invertible QFT's, thus supporting their conjecture.
The large area of high-quality Honeycomb lattice and Kagome lattice of
antimony structure can be formed automatically on Al(111) substrate in room
temperature by molecular beam epitaxy(MBE).Different phases occured with the
increased of deposition time can be investigated by scanning tunneling
microscopy(STM) combined with high electron energy diffractometer(RHEED),and
the changes of each components are characterlized by x-ray photoelectron
spectroscopy(XPS).The 2D topological edge state of antimonene can be measured
by angle resolved photoemission spectroscopy(ARPES) in experimental,and the
electronic structures are further verified by the caculation of
first-principles density functional theory(DFT).
We discuss invertible and non-invertible topological condensation defects
arising from gauging a discrete higher-form symmetry on a higher codimensional
manifold in spacetime, which we define as higher gauging. A $q$-form symmetry
is called $p$-gaugeable if it can be gauged on a codimension-$p$ manifold in
spacetime. We focus on 1-gaugeable 1-form symmetries in general 2+1d QFT, and
gauge them on a surface in spacetime. The universal fusion rules of the
resulting invertible and non-invertible condensation surfaces are determined.
In the special case of 2+1d TQFT, every (invertible and non-invertible) 0-form
global symmetry, including the $\mathbb{Z}_2$ electromagnetic symmetry of the
$\mathbb{Z}_2$ gauge theory, is realized from higher gauging. We further
compute the fusion rules between the surfaces, the bulk lines, and lines that
only live on the surfaces, determining some of the most basic data for the
underlying fusion 2-category. We emphasize that the fusion "coefficients" in
these non-invertible fusion rules are generally not numbers, but rather 1+1d
TQFTs. Finally, we discuss examples of non-invertible symmetries in
non-topological 2+1d QFTs such as the free $U(1)$ Maxwell theory and QED.
We introduce a Floquet circuit describing the driven Ising chain with
topological defects. The corresponding gates include a defect that flips spins
as well as the duality defect that explicitly implements the Kramers-Wannier
duality transformation. The Floquet unitary evolution operator commutes with
such defects, but the duality defect is not unitary, as it projects out half
the states. We give two applications of these defects. One is to analyze the
return amplitudes in the presence of "space-like" defects stretching around the
system. We verify explicitly that the return amplitudes are in agreement with
the fusion rules of the defects. The second application is to study unitary
evolution in the presence of "time-like" defects that implement anti-periodic
and duality-twisted boundary conditions. We show that a single unpaired
localized Majorana zero mode appears in the latter case. We explicitly
construct this operator, which acts as a symmetry of this Floquet circuit. We
also present analytic expressions for the entanglement entropy after a single
time step for a system of a few sites, for all of the above defect
configurations.
We study theoretically the electronic structure of three-dimensional (3D)
higher-order topological insulators in the presence of step edges. We
numerically find that a 1D conducting state with a helical spin structure,
which also has a linear dispersion near the zero energy, emerges at a step edge
and on the opposite surface of the step edge. We also find that the 1D helical
conducting state on the opposite surface of a step edge emerges when the
electron hopping in the direction perpendicular to the step is weak. In other
words, the existence of the 1D helical conducting state on the opposite surface
of a step edge can be understood by considering an addition of two
different-sized independent blocks of 3D higher-order topological insulators.
On the other hand, when the electron hopping in the direction perpendicular to
the step is strong, the location of the emergent 1D helical conducting state
moves from the opposite surface of a step edge to the dip ($270^{\circ}$ edge)
just below the step edge. In this case, the existence at the dip below the step
edge can be understood by assigning each surface with a sign ($+$ or $-$) of
the mass of the surface Dirac fermions. These two physical pictures are
connected continuously without the bulk bandgap closing. Our finding paves the
way for on-demand creation of 1D helical conducting states from 3D higher-order
topological insulators employing experimental processes commonly used in
thin-film devices, which could lead to, e.g., a realization of high-density
Majorana qubits.
The kagome ferromagnet, $\rm Co$-based shandite $\rm Co_{3}Sn_{2}S_{2}$,
shows a large anomalous Hall effect (AHE) associated with the Weyl nodes. A
thin film with a $\rm Co$ kagome monolayer was predicted to exhibit the quantum
AHE, which awaits the experimental realization. However, since the Weyl nodes
are the topological singularities unique to bulk, it is unclear how they reside
while the film thickness is reduced. Moreover, it is challenging to precisely
predict the band topology of thin films where the lattice and electronic
structures are in general different from the bulk. Here we report the $ab \
initio$ results for thin films of $\rm Co_{3}Sn_{2}S_{2}$ with one, two and
three $\rm Co$ layers with $\rm Sn$ or $\rm S$ surface terminations, with
special attention to the optimization of lattice structure and magnetism. We
find that all the $\rm Sn$-end films stabilize a ferromagnetic state similar to
the bulk, and retain the large AHE down to the monolayer limit where the AHE is
quantized. In contrast, in the $\rm S$-end films, the magnetic state varies
with the number of $\rm Co$ layers, which drastically changes the topological
properties, including an interlayer antiferromagnetic state with zero AHE in
the bilayer case. Our results would stimulate further experimental exploration
of thin Weyl materials.
Entanglement entropies of two-dimensional gapped ground states are expected
to satisfy an area law, with a constant correction term known as the
topological entanglement entropy (TEE). In many models, the TEE takes a
universal value that characterizes the underlying topological phase. However,
the TEE is not truly universal: it can differ even for two states related by
constant-depth circuits, which are necessarily in the same phase. The
difference between the TEE and the value predicted by the anyon theory is often
called the spurious topological entanglement entropy. We show that this
spurious contribution is always nonnegative, thus the value predicted by the
anyon theory provides a universal lower bound. This observation also leads to a
definition of TEE that is invariant under constant-depth quantum circuits.
The steepest-entropy-ascent quantum thermodynamic (SEAQT) framework is
utilized to study the effects of temperature on polymer brushes. The brushes
are represented by a discrete energy spectrum and energy degeneracies obtained
through the Replica-Exchange Wang-Landau algorithm. The SEAQT equation of
motion is applied to the density of states to establish a unique kinetic path
from an initial thermodynamic state to a stable equilibrium state. The kinetic
path describes the brush's evolution in state space as it interacts with a
thermal reservoir. The predicted occupation probabilities along the kinetic
path are used to determine expected thermodynamic and structural properties.
The polymer density profile of a polystyrene brush in cyclohexane solvent is
predicted using the equation of motion, and it agrees qualitatively with
experimental density profiles. The Flory-Huggins parameter chosen to describe
brush-solvent interactions affects the solvent distribution in the brush but
has minimal impact on the polymer density profile. Three types of
non-equilibrium kinetic paths with differing amounts of entropy production are
considered: a heating path, a cooling path, and a heating-cooling path.
Properties such as tortuosity, radius of gyration, brush density, solvent
density, and brush chain conformations are calculated for each path.
Dynamical and self-trapping properties of two-dimensional (2D) binary
mixtures of Bose-Einstein condensates (BECs) in cross-combined lattices
consisting of a one-dimensional (1D) linear optical lattice (LOL) in the $x-$
direction for the first component and a 1D non linear optical lattice (NOL) in
the $y$-direction for the second component, are analytically and numerically
investigated. The existence and stability of 2D binary matter wave solitons in
these settings is demonstrated both by variational analysis and by direct
numerical integration of the coupled Gross-Pitaevskii equations (GPE). We find
that in absence of the NOL binary solitons, stabilised by the action of the 1D
LOL and by the attractive inter-component interaction can freely move in the
$y-$direction. In the presence of the NOL we find, quite remarkably, the
existence of threshold curves in the parameter space separating regions where
solitons can move, from regions where the solitons become dynamically
self-trapped. The mechanism underlying the dynamical self-trapping phenomenon
(DSTP) is qualitatively understood in terms of a dynamical barrier induced by
the the NOL similar to the Peirls-Nabarro barrier of solitons in discrete
lattices. DSTP is numerically demonstrated for binary solitons that are put in
motion both by phase imprinting and by the action of external potentials
applied in the $y-$direction. In the latter case we show that the trapping
action of the NOL allows maintaining a 2D binary soliton at rest in a
non-equilibrium position of a parabolic trap, or to prevent it from falling
under the action of gravity. Possible applications of the results are also
briefly discussed.
We study 't Hooft anomalies of global symmetries in 1+1d lattice Hamiltonian
systems. We consider anomalies in internal and lattice translation symmetries.
We derive a microscopic formula for the "anomaly cocycle" using topological
defects implementing twisted boundary conditions. The anomaly takes value in
the cohomology group $H^3(G,U(1)) \times H^2(G,U(1))$. The first factor
captures the anomaly in the internal symmetry group $G$, and the second factor
corresponds to a generalized Lieb-Schultz-Mattis anomaly involving $G$ and
lattice translation. We present a systematic procedure to gauge internal
symmetries (that may not act on-site) on the lattice. We show that the anomaly
cocycle is the obstruction to gauging the internal symmetry while preserving
the lattice translation symmetry. As an application, we construct anomaly-free
chiral lattice gauge theories. We demonstrate a one-to-one correspondence
between (locality-preserving) symmetry operators and topological defects, which
is essential for the results we prove. We also discuss the generalization to
fermionic theories. Finally, we construct non-invertible lattice translation
symmetries by gauging internal symmetries with a Lieb-Schultz-Mattis anomaly.
Transduction of quantum information between distinct quantum systems is an
essential step in various applications, including quantum networks and quantum
computing. However, mediating photons of vastly different frequencies and
designing high-performance transducers are challenging, due to multifaceted and
sometimes conflicting requirements. In this work, we first discuss some general
principles for quantum transducer design, and then propose solid-state
anti-ferromagnetic topological insulators to serve as highly effective
transducers. First, topological insulators exhibit band-inversion, which can
greatly enhance their optical responses. This property, coupled with robust
spin-orbit coupling and high spin density, results in strong nonlinear
interaction in magnetic topological insulators, thereby substantially improving
transduction efficiency. Second, the anti-ferromagnetic order can minimize the
detrimental influence on other neighboring quantum systems due to magnetic
interactions. Using MnBi2Te4 as an example, we showcase that single-photon
quantum transduction efficiency exceeding 80% can be achieved with modest
experimental requirements, while the transduction bandwidth can reach the GHz
range. The strong nonlinear photonic interactions in magnetic topological
insulators can find diverse applications, including the generation of
entanglement between photons of disparate frequencies and quantum squeezing.
One of the prime material candidates to host the axion insulator state is
EuIn$_{2}$As$_{2}$. First-principles calculations predicted the emergence of
this exotic topological phase based on the assumption of a collinear
antiferromagnetic structure. However, neutron scattering measurements revealed
a more intricate magnetic ground state, characterized by two coexisting
magnetic wavevectors, reached by successive thermal phase transitions. The
proposed high and low temperature phases were a spin helix and a state with
interpenetrating helical and antiferromagnetic order, termed a broken helix,
respectively. Despite its complexity, the broken helix still protects the axion
state because the product of time-reversal and a rotational symmetry is
preserved. Here we identify the magnetic structure associated with these two
phases using a multimodal approach that combines symmetry-sensitive optical
probes, scattering, and group theoretical analysis. We find that the higher
temperature phase hosts a nodal structure rather than a helix, characterized by
a variation of the magnetic moment amplitude from layer to layer, with the
moment vanishing entirely in every third Eu layer. The lower temperature
structure is similar to the broken helix, with one important difference: the
relative orientation of the magnetic structure and the lattice is not fixed,
resulting in an `unpinned broken helix'. As a result of the breaking of
rotational symmetry, the axion phase is not generically protected.
Nevertheless, we show that it can be restored if the magnetic structure is
tuned with externally-applied uniaxial strain. Finally, we present a spin
Hamiltonian that identifies the spin interactions needed to account for the
complex magnetic order in EuIn$_{2}$As$_{2}$. Our work highlights the
importance of the multimodal approach in determining the symmetry of complex
order-parameters.

Date of feed: Thu, 02 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) **Classification of 1+1D gapless symmetry protected phases via topological holography. (arXiv:2311.00050v1 [cond-mat.str-el])**

Rui Wen, Andrew C. Potter

**Dynamical characterization of $Z_{2}$ Floquet topological phases via quantum quenches. (arXiv:2311.00114v1 [cond-mat.quant-gas])**

Lin Zhang

**Observing periodic gap variations in cuprates. (arXiv:2311.00178v1 [cond-mat.supr-con])**

Riju Banerjee, Emily L. Wang, Eric W. Hudson

**Performance limits to graphene single-photon bolometers by thermal transport. (arXiv:2311.00228v1 [cond-mat.mes-hall])**

Caleb Fried, B. Jordan Russell, Ethan G. Arnault, Bevin Huang, Gil-Ho Lee, Dirk Englund, Erik A. Henriksen, Kin Chung Fong

**Tuning of Berry Curvature Dipole in TaAs slabs: An effective Route to Enhance Nonlinear Hall Response. (arXiv:2311.00247v1 [cond-mat.mtrl-sci])**

Hongsheng Pang, Gan Jin, Lixin He

**Tunable p-n junction barriers in few-electron bilayer graphene quantum dots. (arXiv:2311.00250v1 [cond-mat.mes-hall])**

Fang-Ming Jing, Guo-Quan Qin, Zhuo-Zhi Zhang, Xiang-Xiang Song, Guo-Ping Guo

**Topological transport of vorticity on curved magnetic membranes. (arXiv:2311.00323v1 [cond-mat.mes-hall])**

Chau Dao, Ji Zou, Eric Kleinherbers, Yaroslav Tserkovnyak

**Correlation-induced Fermi surface evolution and topological crystalline superconductivity in CeRh2As2. (arXiv:2311.00324v1 [cond-mat.supr-con])**

Jun Ishizuka, Kosuke Nogaki, Manfred Sigrist, Youichi Yanase

**Transport and electrical properties of cryogenic thermoelectric FeSb2: the effect of isoelectronic and hole doping. (arXiv:2311.00326v1 [cond-mat.mtrl-sci])**

Deepak Gujjar, Sunidhi Gujjar, V. K. Malik, Hem C. Kandpal

**Engineering of Chern number of topological bands in bilayer graphene by in-plane magnetic field and electrical bias. (arXiv:2311.00331v1 [cond-mat.mes-hall])**

Narjes Kheirabadi

**Two-dimensional double-kagome-lattice nitrogene: a direct band gap semiconductor with nontrivial corner state. (arXiv:2311.00340v1 [cond-mat.mtrl-sci])**

Wenzhang Li, Qin He, Xiao-Ping Li, Da-Shuai Ma, Botao Fu

**The Casimir Force between Two Graphene Sheets: 2D Fresnel Reflection Coefficients, Contributions of Different Polarizations, and the Role of Evanescent Waves. (arXiv:2311.00363v1 [quant-ph])**

Galina L. Klimchitskaya, Vladimir M. Mostepanenko

**Characterization of the 2D Su-Schrieffer-Heeger Model with Second-Nearest-Neighbor Interactions. (arXiv:2311.00427v1 [cond-mat.mtrl-sci])**

Chani Stella van Niekerk, Robert Warmbier

**A complementary experimental study of epitaxial La0.67Sr0.33MnO3 to identify morphological and chemical disorder. (arXiv:2311.00504v1 [cond-mat.mtrl-sci])**

Michael Verhage, Emma van der Minne, Ellen M. Kiens, Lucas Korol, Raymond J. Spiteri, Gertjan Koster, Robert J. Green, Christoph Baeumer, Kees Flipse

**Critical current throughout the BCS-BEC crossover with the inclusion of pairing fluctuations. (arXiv:2311.00540v1 [cond-mat.supr-con])**

Leonardo Pisani, Verdiana Piselli, Giancarlo Calvanese Strinati

**Room temperature electroluminescence from isolated colour centres in van der Waals semiconductors. (arXiv:2311.00549v1 [cond-mat.mes-hall])**

Gyuna Park, Ivan Zhigulin, Hoyoung Jung, Jake Horder, Karin Yamamura, Yerin Han, Kenji Watanabe, Takashi Taniguchi, Igor Aharonovich, Jonghwan Kim

**Electric Fields Near Undulating Dielectric Membranes. (arXiv:2311.00570v1 [cond-mat.soft])**

Nicholas Pogharian, Alexandre P. dos Santos, Monica Olvera de la Cruz

**Theoretical Investigation of Samarium Hexaboride. (arXiv:2311.00583v1 [cond-mat.mes-hall])**

Partha Goswami, Udai Prakash Tyagi

**Large deviations and conditioning for chaotic non-invertible deterministic maps: analysis via the forward deterministic dynamics and the backward stochastic dynamics. (arXiv:2311.00593v1 [cond-mat.stat-mech])**

Cecile Monthus

**Crystalline topological defects within response theory. (arXiv:2311.00698v1 [cond-mat.str-el])**

Sami Hakani, Itamar Kimchi

**Differential models for the Anderson dual to bordism theories and invertible QFT's, I. (arXiv:2106.09270v3 [math.AT] UPDATED)**

Mayuko Yamashita, Kazuya Yonekura

**Antimonene with Topological Nontrivial Band Structure on Al(111) Substrate. (arXiv:2112.05424v2 [cond-mat.mtrl-sci] UPDATED)**

Wang Yang

**Higher Gauging and Non-invertible Condensation Defects. (arXiv:2204.02407v3 [hep-th] UPDATED)**

Konstantinos Roumpedakis, Sahand Seifnashri, Shu-Heng Shao

**Topological Defects in Floquet Circuits. (arXiv:2206.06272v2 [cond-mat.str-el] UPDATED)**

Mao Tian Tan, Yifan Wang, Aditi Mitra

**Emergent One-Dimensional Helical Channel in Higher-Order Topological Insulators with Step Edges. (arXiv:2206.15206v4 [cond-mat.mes-hall] UPDATED)**

Akihiko Sekine, Manabu Ohtomo, Kenichi Kawaguchi, Mari Ohfuchi

**One, two, three, $\ldots$ infinity: topological properties of thin films of $\rm Co$-based shandite. (arXiv:2212.09026v2 [cond-mat.str-el] UPDATED)**

Kazuki Nakazawa, Yasuyuki Kato, Yukitoshi Motome

**Universal lower bound on topological entanglement entropy. (arXiv:2302.00689v2 [quant-ph] UPDATED)**

Isaac H. Kim, Michael Levin, Ting-Chun Lin, Daniel Ranard, Bowen Shi

**Predicting Polymer Brush Behavior in Solvents using the Steepest-Entropy-Ascent Quantum Thermodynamic Framework. (arXiv:2304.04105v2 [cond-mat.soft] UPDATED)**

Jared McDonald, Michael R. von Spakovsky, William T. Reynolds Jr

**Dynamical self-trapping of two-dimensional binary solitons in cross-combined linear and nonlinear optical lattices. (arXiv:2305.03438v2 [nlin.PS] UPDATED)**

K.K. Ismailov, G.A. Sekh, Mario Salerno

**Lieb-Schultz-Mattis anomalies as obstructions to gauging (non-on-site) symmetries. (arXiv:2308.05151v2 [cond-mat.str-el] UPDATED)**

Sahand Seifnashri

**Efficient Quantum Transduction Using Anti-Ferromagnetic Topological Insulators. (arXiv:2308.09048v2 [cond-mat.mtrl-sci] UPDATED)**

Haowei Xu, Changhao Li, Guoqing Wang, Hao Tang, Paola Cappellaro, Ju Li

**Symmetry-breaking pathway towards the unpinned broken helix. (arXiv:2310.16018v2 [cond-mat.str-el] UPDATED)**

E. Donoway, T. V. Trevisan, A. Liebman - Peláez, R. P. Day, K. Yamakawa, Y. Sun, J. R. Soh, D. Prabhakaran, A. T. Boothroyd, R. M. Fernandes, J. G. Analytis, J. E. Moore, J. Orenstein, V. Sunko

Found 7 papers in prb We model the isotropic depinning transition of a domain wall using a two-dimensional Ginzburg-Landau scalar field instead of a directed elastic string in a random media. An exact algorithm accurately targets both the critical depinning field and the critical configuration for each sample. For random… We study surface states in the three-dimensional topological insulators ${\mathrm{Bi}}_{2}{\mathrm{Te}}_{3−x}{\mathrm{Se}}_{x}$ ($x=0,2,3$) by polarization resolved resonant Raman spectroscopy. By tracking the spectral intensity of the surface phonon modes with respect to the incident photon energy,… Finding two-dimensional (2D) materials with ferroelectricity is of great interests towards polarization-related applications and nanosized devices. Despite much theoretical efforts that predict the existence of novel 2D ferroelectrics, only a small portion have been realized in experiments. The well… Su-Schrieffer-Heeger (SSH) electron-phonon ($e-p\phantom{\rule{0}{0ex}}h$) interactions have been theorized to play critical roles in several novel states of matter, ranging from nontrivial topological states to high-temperature bipolaronic superconductivity. This work compares the superconducting and competing charge and bond correlations of the two-dimensional Holstein and optical (SSH) models. The authors find that near half-filling, light SSH (bi)polarons support superconductivity to larger values of $e-p\phantom{\rule{0}{0ex}}h$ coupling compared to the Holstein polaron. These results are essential for identifying and engineering bipolaronic superconductivity in quantum materials. Two-dimensional topological superconductors with chiral edge modes are predicted to possess a quantized thermal Hall effect proportional to the Chern number, exactly half that for chiral topological insulators. However, not much work has been done in identifying the quantized heat conductance in the… The electrical polarization switching on a stoichiometric $\mathrm{GaFe}{\mathrm{O}}_{3}$ single crystal was measured, and a model of atomic displacements responsible for the polarization reverse was proposed. The widely adapted mechanism of polarization switching in $\mathrm{GaFe}{\mathrm{O}}_{3}$ … Topological interface states in periodic lattices have emerged as valuable assets in the fields of electronics, photonics, and phononics, owing to their inherent robustness against disorder. Unlike electronics and photonics, the linear dispersion relation of hypersound offers an ideal framework for …

Date of feed: Thu, 02 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) **Depinning free of the elastic approximation**

A. B. Kolton, E. E. Ferrero, and A. Rosso

Author(s): A. B. Kolton, E. E. Ferrero, and A. Rosso

[Phys. Rev. B 108, 174201] Published Wed Nov 01, 2023

**Electronic and vibrational excitations on the surface of the three-dimensional topological insulator ${\mathrm{Bi}}_{2}{\mathrm{Te}}_{3−x}{\mathrm{Se}}_{x}$ ($x=0,2,3$)**

A. C. Lee, H.-H. Kung, Xueyun Wang, S.-W. Cheong, and G. Blumberg

Author(s): A. C. Lee, H.-H. Kung, Xueyun Wang, S.-W. Cheong, and G. Blumberg

[Phys. Rev. B 108, 174301] Published Wed Nov 01, 2023

**Nonpolar $1T$-to-$1{T}^{′}$ order-disorder transition in a ${\mathrm{MoS}}_{2}$ monolayer**

Xue Ma, Ningbo Fan, Jinzhu Zhao, and Bin Xu

Author(s): Xue Ma, Ningbo Fan, Jinzhu Zhao, and Bin Xu

[Phys. Rev. B 108, 184101] Published Wed Nov 01, 2023

**Comparative study of the superconductivity in the Holstein and optical Su-Schrieffer-Heeger models**

Andy Tanjaroon Ly, Benjamin Cohen-Stead, Sohan Malkaruge Costa, and Steven Johnston

Author(s): Andy Tanjaroon Ly, Benjamin Cohen-Stead, Sohan Malkaruge Costa, and Steven Johnston

[Phys. Rev. B 108, 184501] Published Wed Nov 01, 2023

**Quantized thermal Hall conductance and the topological phase diagram of a superconducting bismuth bilayer**

Szczepan Głodzik and Nicholas Sedlmayr

Author(s): Szczepan Głodzik and Nicholas Sedlmayr

[Phys. Rev. B 108, 184502] Published Wed Nov 01, 2023

**Electrical polarization switching in bulk single-crystal $\mathrm{GaFe}{\mathrm{O}}_{3}$**

Maria Biernacka, Paweł Butkiewicz, Konrad J. Kapcia, Wojciech Olszewski, Dariusz Satuła, Marek Szafrański, Marcin Wojtyniak, and Krzysztof R. Szymański

Author(s): Maria Biernacka, Paweł Butkiewicz, Konrad J. Kapcia, Wojciech Olszewski, Dariusz Satuła, Marek Szafrański, Marcin Wojtyniak, and Krzysztof R. Szymański

[Phys. Rev. B 108, 195101] Published Wed Nov 01, 2023

**Topological nanophononic interface states using high-order bandgaps in the one-dimensional Su-Schrieffer-Heeger model**

A. Rodriguez, K. Papatryfonos, E. R. Cardozo de Oliveira, and N. D. Lanzillotti-Kimura

Author(s): A. Rodriguez, K. Papatryfonos, E. R. Cardozo de Oliveira, and N. D. Lanzillotti-Kimura

[Phys. Rev. B 108, 205301] Published Wed Nov 01, 2023

Found 2 papers in prl We reveal the gate-tunable Berry curvature dipole polarizability in Dirac semimetal ${\mathrm{Cd}}_{3}{\mathrm{As}}_{2}$ nanoplates through measurements of the third-order nonlinear Hall effect. Under an applied electric field, the Berry curvature exhibits an asymmetric distribution, forming a field… We identify generic protocols achieving optimal power extraction from a single active particle subject to continuous feedback control under the assumption that its spatial trajectory, but not its instantaneous self-propulsion force, is accessible to direct observation. Our Bayesian approach draws on…

Date of feed: Thu, 02 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) **Gate-Tunable Berry Curvature Dipole Polarizability in Dirac Semimetal ${\mathrm{Cd}}_{3}{\mathrm{As}}_{2}$**

Tong-Yang Zhao, An-Qi Wang, Xing-Guo Ye, Xing-Yu Liu, Xin Liao, and Zhi-Min Liao

Author(s): Tong-Yang Zhao, An-Qi Wang, Xing-Guo Ye, Xing-Yu Liu, Xin Liao, and Zhi-Min Liao

[Phys. Rev. Lett. 131, 186302] Published Wed Nov 01, 2023

**Optimal Power Extraction from Active Particles with Hidden States**

Luca Cocconi, Jacob Knight, and Connor Roberts

Author(s): Luca Cocconi, Jacob Knight, and Connor Roberts

[Phys. Rev. Lett. 131, 188301] Published Wed Nov 01, 2023

Found 2 papers in nano-lett

Date of feed: Wed, 01 Nov 2023 13:08:23 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] High-Performance WSe2 Top-Gate Devices with Strong Spacer Doping**

Po-Hsun Ho, Yu-Ying Yang, Sui-An Chou, Ren-Hao Cheng, Po-Heng Pao, Chao-Ching Cheng, Iuliana Radu, and Chao-Hsin ChienNano LettersDOI: 10.1021/acs.nanolett.3c02757

**[ASAP] Robustness of Trion State in Gated Monolayer MoSe2 under Pressure**

Zeya Li, Feng Qin, Chin Shen Ong, Junwei Huang, Zian Xu, Peng Chen, Caiyu Qiu, Xi Zhang, Caorong Zhang, Xiuxiu Zhang, Olle Eriksson, Angel Rubio, Peizhe Tang, and Hongtao YuanNano LettersDOI: 10.1021/acs.nanolett.3c02812

Found 2 papers in science-adv

Date of feed: Wed, 01 Nov 2023 17:58:18 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) **Room temperature field-free switching of perpendicular magnetization through spin-orbit torque originating from low-symmetry type II Weyl semimetal**

Yu Zhang, Hongjun Xu, Ke Jia, Guibin Lan, Zhiheng Huang, Bin He, Congli He, Qiming Shao, Yizhan Wang, Mingkun Zhao, Tianyi Ma, Jing Dong, Chenyang Guo, Chen Cheng, Jiafeng Feng, Caihua Wan, Hongxiang Wei, Youguo Shi, Guangyu Zhang, Xiufeng Han, Guoqiang Yu

Science Advances, Volume 9, Issue 44, November 2023.

**Valley-conserved topological integrated antenna for 100-Gbps THz 6G wireless**

Ridong Jia, Sonu Kumar, Thomas Caiwei Tan, Abhishek Kumar, Yi Ji Tan, Manoj Gupta, Pascal Szriftgiser, Arokiaswami Alphones, Guillaume Ducournau, Ranjan Singh

Science Advances, Volume 9, Issue 44, November 2023.