Found 32 papers in cond-mat Digital quantum simulation relies on Trotterization to discretize time
evolution into elementary quantum gates. On current quantum processors with
notable gate imperfections, there is a critical tradeoff between improved
accuracy for finer timesteps, and increased error rate on account of the larger
circuit depth. We present an adaptive Trotterization algorithm to cope with
time-dependent Hamiltonians, where we propose a concept of instantaneous
"conserved" quantities to estimate errors in the time evolution between two
(nearby) points in time; these allow us to bound the errors accumulated over
the full simulation period. They reduce to standard conservation laws in the
case of time-independent Hamiltonians, for which we first developed an adaptive
Trotterization scheme. We validate the algorithm for a time-dependent quantum
spin chain, demonstrating that it can outperform the conventional Trotter
algorithm with a fixed step size at a controlled error.
In this work, we exhaust all the spin-space symmetries, which fully
characterize collinear, non-collinear, commensurate, and incommensurate spiral
magnetism, and investigate enriched features of electronic bands that respect
these symmetries. We achieve this by systematically classifying the so-called
spin space groups (SSGs) - joint symmetry groups of spatial and spin operations
that leave the magnetic structure unchanged. Generally speaking, they are
accurate (approximate) symmetries in systems where spin-orbit coupling (SOC) is
negligible (finite but weaker than the interested energy scale); but we also
show that specific SSGs could remain valid even in the presence of a strong
SOC. By representing the SSGs as O($N$) representations, we - for the first
time - obtain the complete classifications of 1421, 9542, and 56512 distinct
SSGs for collinear ($N=1$), coplanar ($N=2$), and non-coplanar ($N=3$)
magnetism, respectively. SSG not only fully characterizes the symmetry of spin
d.o.f., but also gives rise to exotic electronic states, which, in general,
form projective representations of magnetic space groups (MSGs). Surprisingly,
electronic bands in SSGs exhibit features never seen in MSGs, such as
nonsymmorphic SSG Brillouin zone (BZ), where SSG operations behave as glide or
screw when act on momentum and unconventional spin-momentum locking, which is
completely determined by SSG, independent of Hamiltonian details. To apply our
theory, we identify the SSG for each of the 1604 published magnetic structures
in the MAGNDATA database on the Bilbao Crystallographic Server. Material
examples exhibiting aforementioned novel features are discussed with emphasis.
We also investigate new types of SSG-protected topological electronic states
that are unprecedented in MSGs.
Those fundamental properties, such as phase transitions, Weyl fermions and
spin excitation, in all magnetic ordered materials was ultimately believed to
rely on the symmetry theory of magnetic space groups. Recently, it has come to
light that a more comprehensive group, known as the spin space group (SSG),
which combines separate spin and spatial operations, is necessary to fully
characterize the geometry and physical properties of magnetic ordered materials
such as altermagnets. However, the basic theory of SSG has been seldomly
developed. In this work, we present a systematic study of the enumeration and
the representation theory of SSG. Starting from the 230 crystallographic space
groups and finite translational groups with a maximum order of 8, we establish
an extensive collection of over 80,000 SSGs under a four-segment nomenclature.
We then identify inequivalent SSGs specifically applicable to collinear,
coplanar, and noncoplanar magnetic configurations. Moreover, we derive the
irreducible co-representations of the little group in momentum space within the
SSG framework. Finally, we illustrate the SSGs and band degeneracies resulting
from SSG symmetries through several representative material examples, including
a well-known altermagnet RuO2, and a spiral magnet CeAuAl3. Our work advances
the field of group theory in describing magnetic ordered materials, opening up
avenues for deeper comprehension and further exploration of emergent phenomena
in magnetic materials.
Symmetries of three-dimensional periodic scalar fields are described by 230
space groups (SGs). Symmetries of three-dimensional periodic (pseudo-) vector
fields, however, are described by the spin-space groups (SSGs), which were
initially used to describe the symmetries of magnetic orders. In SSGs, the
real-space and spin degrees of freedom are unlocked in the sense that an
operation could have different spacial and spin rotations. SSGs gives a
complete symmetry description of magnetic structures, and have natural
applications in the band theory of itinerary electrons in magnetically ordered
systems with weak spin-orbit coupling.\textit{Altermagnetism}, a concept raised
recently that belongs to the symmetry-compensated collinear magnetic orders but
has non-relativistic spin splitting, is well described by SSGs. Due to the vast
number and complicated group structures, SSGs have not yet been systematically
enumerated. In this work, we exhaust SSGs based on the invariant subgroups of
SGs, with spin operations constructed from three-dimensional (3D) real
representations of the quotient groups for the invariant subgroups. For
collinear and coplanar magnetic orders, the spin operations can be reduced into
lower dimensional real representations. As the number of SSGs is infinite, we
only consider SSGs that describe magnetic unit cells up to 12 times crystal
unit cells. We obtain 157,289 non-coplanar, 24,788 coplanar-non-collinear, and
1,421 collinear SSGs. The enumerated SSGs are stored in an online database at
\url{https://cmpdc.iphy.ac.cn/ssg} with a user-friendly interface. We also
develop an algorithm to identify SSG for realistic materials and find SSGs for
1,626 magnetic materials. Our results serve as a solid starting point for
further studies of symmetry and topology in magnetically ordered materials.
Recent experiments observed a phase transition within the superconducting
regime of the heavy-fermion system CeRh$_2$As$_2$ when subjected to a $c$-axis
magnetic field. This phase transition has been interpreted as a parity
switching from even to odd parity as the field is increased, and is believed to
be of first order. If correct, this scenario provides a unique opportunity to
study the phenomenon of local nucleation around inhomogeneities in a
superconducting context. Here, we study such nucleation in the form of sharp
domain walls emerging on a background of spatially varying material properties
and hence, critical magnetic field. To this end, we construct a spatially
inhomogeneous Ginzburg-Landau functional and apply numerical minimization to
demonstrate the existence of localized domain wall solutions and study their
physical properties. Furthermore, we propose ultrasound attenuation as an
experimental bulk probe of domain wall physics in the system. In particular, we
predict the appearance of an absorption peak due to domain wall percolation
upon tuning the magnetic field across the first-order transition line. We argue
that the temperature dependence of this peak could help identify the nature of
the phase transition.
Spin vacancies in the non-Abelian Kitaev spin liquid are known to harbor
Majorana zero modes, potentially enabling topological quantum computing at
elevated temperatures. Here, we study the spectroscopic signatures of such
Majorana zero modes in a scanning tunneling setup where a non-Abelian Kitaev
spin liquid with a finite density of spin vacancies forms a tunneling barrier
between a tip and a substrate. Our key result is a well-defined peak close to
zero bias voltage in the derivative of the tunneling conductance whose voltage
and intensity both increase with the density of vacancies. This
''quasi-zero-voltage peak'' is identified as the closest analog of the
zero-voltage peak observed in topological superconductors that additionally
reflects the fractionalized nature of spin-liquid-based Majorana zero modes. We
further highlight a single-fermion Van Hove singularity at a higher voltage
that reveals the energy scale of the emergent Majorana fermions in the Kitaev
spin liquid. Our proposed signatures are within reach of current experiments on
the candidate material $\alpha$-RuCl$_3$.
A recent experiment on the bulk compound 4Hb-TaS$_2$ reveals an unusual
time-reversal symmetry-breaking superconducting state that possesses a magnetic
memory not manifest in the normal state. Here we provide one mechanism for this
observation by studying the magnetic and electronic properties of 4Hb-TaS$_2$.
We discuss the criterion for a small magnetization in the normal state in terms
of spin and orbital magnetization. Based on an analysis of lattice symmetry and
Fermi surface structure, we propose that 4Hb-TaS$_2$ realizes superconductivity
in the interlayer, equal-spin channel with a gap function whose phase winds
along the Fermi surface by an integer multiple of $6\pi$. The enhancement of
the magnetization in the superconducting state compared to the normal state can
be explained if the state with a gap winding of $6\pi$ is realized, accounting
for the observed magnetic memory. We discuss how this superconducting state can
be probed experimentally by spin-polarized scanning tunneling microscopy.
In this paper, we demonstrate low-thermal-budget ferroelectric field-effect
transistors (FeFETs) based on two-dimensional ferroelectric CuInP2S6 (CIPS) and
oxide semiconductor InZnO (IZO). The CIPS/IZO FeFETs exhibit non-volatile
memory windows of ~1 V, low off-state drain currents, and high carrier
mobilities. The ferroelectric CIPS layer serves a dual purpose by providing
electrostatic doping in IZO and acting as a passivation layer for the IZO
channel. We also investigate the CIPS/IZO FeFETs as artificial synaptic devices
for neural networks. The CIPS/IZO synapse demonstrates a sizeable dynamic ratio
(125) and maintains stable multi-level states. Neural networks based on
CIPS/IZO FeFETs achieve an accuracy rate of over 80% in recognizing MNIST
handwritten digits. These ferroelectric transistors can be vertically stacked
on silicon CMOS with a low thermal budget, offering broad applications in
CMOS+X technologies and energy-efficient 3D neural networks.
Using muon spin relaxation ($\mu$SR) measurements on formamidinium lead
iodide [FAPbI$_3$, where FA denotes HC(NH$_2)_2$] we show that, among the five
structurally distinct phases of FAPbI$_3$ exhibited through two different
temperature hysteresis, the reorientation motion of FA molecules is
quasi-static below $\approx50$ K over the time scale of 10$^{-6}$ s in the
low-temperature (LT) hexagonal (Hex-LT, $<160$ K) phase which has relatively
longer photo-excited charge carrier lifetime ($\tau_{\rm c}\sim$10$^{-6}$ s).
In contrast, a sharp increase in the FA molecular motion was found above
$\approx50$ K in the Hex-LT phase, LT-tetragonal phase (Tet-LT, $<140$ K), the
high-temperature (HT) hexagonal phase (Hex-HT, 160-380 K), and the
HT-tetragonal phase (Tet-HT, 140-280 K) where $\tau_{\rm c}$ decreases with
increasing temperature. More interestingly, the reorientation motion is further
promoted in the cubic phase at higher temperatures ($>380/280$ K), while
$\tau_{\rm c}$ is recovered to comparable or larger than that of the LT phases.
These results indicate that there are two factors that determine $\tau_{\rm
c}$, one related to the local reorientation of cationic molecules that is not
unencumbered by phonons, and the other to the high symmetry of the bulk crystal
structure.
Researchers in the field of physical science are continuously searching for
universal features in strongly interacting many-body systems. However, these
features can often be concealed within highly complex observables, such as
entanglement entropy (EE). The non-local nature of these observables makes them
challenging to measure experimentally or evaluate numerically. Therefore, it is
of utmost importance to develop a reliable and convenient algorithm that can
accurately obtain these complex observables. In this paper, with help of
quantum Monte Carlo (QMC), we reveal that the statistical variance of EE
exponentially explodes with respect to the system size, making the evaluation
of EE inaccurate. We further introduce an incremental algorithm based on the
framework of QMC to solve this conundrum. The total number of our incremental
processes can be quantitatively determined and reasonably adjusted, making it
easy to control the precision in practice. We demonstrate the effectiveness and
convenience of our incremental algorithm by using it to obtain the highly
accurate EE of a 2D Hubbard model as an example. Additionally, our algorithm
can be potentially generalized to calculate other numerically statistically
unstable observables with exponential variance growth, such as the entanglement
spectrum and topological entanglement negativity of correlated boson/spin and
fermion systems, as well as other general functions of determinants of Green's
functions in interacting fermions. Accurately measuring these complex
observables has the potential to inspire the development of physical theories
and guide the direction of experiments.
Motivated by the recent experiments and the wide tunability on the
MoTe$_2$/WSe$_2$ moir\'{e} heterobilayer, we consider a physical model to
explore the underlying physics for the interplay between the itinerant carriers
and the local magnetic moments. In the regime where the MoTe$_2$ is tuned to a
triangular lattice Mott insulator and the WSe$_2$ layer is doped with the
itinerant holes, we invoke the itinerant ferromagnetism from the double
exchange mechanism for the itinerant holes on the WSe$_2$ layer and the local
moments on the MoTe$_2$ layer. Together with the antiferromagnetic exchange on
the MoTe$_2$ layer, the itinerant ferromagnetism generates the scalar spin
chirality distribution in the system. We further point out the presence of
spin-assisted hopping in addition to the Kondo coupling between the local spin
and the itinerant holes, and demonstrate the topological Hall effect for the
itinerant electrons in the presence of the non-collinear spin configurations.
This work may improve our understanding of the correlated moir\'{e} systems and
inspire further experimental efforts.
van der Waals (vdW) layered transition-metal chalcogenides are attracting
significant attention owing to their fascinating physical properties. This
group of materials consists of abundant members with various elements, having a
variety of different structures. However, all vdW layered materials studied to
date have been limited to crystalline materials, and the physical properties of
vdW layered quasicrystals have not yet been reported. Here, we report on the
discovery of superconductivity in a vdW layered quasicrystal of Ta1.6Te. The
electrical resistivity, magnetic susceptibility, and specific heat of the
Ta1.6Te quasicrystal fabricated by reaction sintering, unambiguously validated
the occurrence of bulk superconductivity at a transition temperature of ~1 K.
This discovery can pioneer new research on assessing the physical properties of
vdW layered quasicrystals as well as two-dimensional quasicrystals; moreover,
it paves the way toward new frontiers of superconductivity in thermodynamically
stable quasicrystals, which has been the predominant challenge facing condensed
matter physics since the discovery of quasicrystals almost four decades ago.
Conventional superconductors naturally disfavor ferromagnetism because the
supercurrent-carrying electrons are paired into anti-parallel spin singlets. In
superconductors with strong Rashba spin-orbit coupling, impurity magnetic
moments induce supercurrents through the spin-galvanic effect. As a result,
long-range ferromagnetic interaction among the impurity moments may be mediated
through such anomalous supercurrents in a similar fashion as in itinerant
ferromagnets. Fe(Se,Te) is such a superconductor with topological surface
bands, previously shown to exhibit quantum anomalous vortices around impurity
spins. Here, we take advantage of the flux sensitivity of scanning
superconducting quantum interference devices to investigate superconducting
Fe(Se,Te) in the regime where supercurrents around impurities overlap. We find
homogeneous remanent flux patterns after applying a supercurrent through the
sample. The patterns are consistent with anomalous edge and bulk supercurrents
generated by in-plane magnetization, which occur above a current threshold and
follow hysteresis loops reminiscent of those of a ferromagnet. Similar
long-range magnetic orders can be generated by Meissner current under a small
out-of-plane magnetic field. The magnetization weakens with increasing
temperature and disappears after thermal cycling to above superconducting
critical temperature; further suggesting superconductivity is central to
establishing and maintaining the magnetic order. These observations demonstrate
surface anomalous supercurrents as a mediator for ferromagnetism in a
spin-orbit coupled superconductor, which may potentially be utilized for
low-power cryogenic memory.
Defect engineering to activate the basal planes of transition metal
dichalcogenides (TMDs) is critical for the development of TMD-based
electrocatalysts as the chemical inertness of basal planes restrict their
potential applications in hydrogen evolution reaction (HER). Here, we report
the synthesis and evaluation of few-layer (7x7)-PtTe2-x with an ordered,
well-defined and high-density Te vacancy superlattice. Compared with pristine
PtTe2, (2x2)-PtTe2-x and Pt(111), (7x7)-PtTe2-x exhibits superior HER
activities in both acidic and alkaline electrolytes due to its rich structures
of undercoordinated Pt sites. Furthermore, the (7x7)-PtTe2-x sample features
outstanding catalytic stability even compared to the state-of-the-art Pt/C
catalyst. Theoretical calculations reveal that the interactions between various
undercoordinated Pt sites due to proximity effect can provide superior
undercoordinated Pt sites for hydrogen adsorption and water dissociation. This
work will enrich the understanding of the relationship between defect
structures and electrocatalytic activities and provide a promising route to
develop efficient Pt-based TMD electrocatalysts.
Quantum diffusion is a major topic in condensed-matter physics, and the
Caldeira-Leggett model has been one of the most successful approaches to study
this phenomenon. Here, we generalize this model by coupling the bath to the
system through a Weyl fractional derivative. The Weyl fractional Langevin
equation is then derived without imposing a non-Ohmic macroscopic spectral
function for the bath. By investigating the short- and long-time behavior of
the mean squared displacement (MSD), we show that this model is able to
describe a large variety of anomalous diffusion. Indeed, we find ballistic,
sub-ballistic, and super-ballistic behavior for short times, whereas for long
times we find saturation, and sub- and super-diffusion.
We propose a spin photogalvanic effect of magnons with broken inversion
symmetry. The dc spin photocurrent is generated via the Aharonov-Casher effect,
which includes the Drude, Berry curvature dipole, shift, injection, and
rectification components with distinct quantum geometric origin. Based on a
symmetry classification, we uncover that there exist linearly polarized (LP)
magnon spin photocurrent responses in the breathing kagome-lattice ferromagnet
with Dzyaloshinskii-Moriya interaction, and the circularly polarized (CP)
responses due to the symmetry breaking by applying a uniaxial strain. We
address that the topological phase transitions can be characterized by the spin
photocurrents. This study presents a deeper insight into the nonlinear
responses of light-magnon interactions, and suggests a possible way to generate
and control the magnon spin current in real materials.
A light beam can be spatially structured in the complex amplitude to possess
orbital angular momentum (OAM), which introduces a new degree of freedom
alongside the intrinsic spin angular momentum (SAM) associated with circular
polarization. Moreover, super-imposing two twisted lights with distinct SAM and
OAM produces a vector vortex beam (VVB) in non-separable states where not only
complex amplitude but also polarization are spatially structured and entangled
with each other. In addition to the non-separability, the SAM and OAM in a VVB
are intrinsically coupled by the optical spin-orbit interaction and constitute
the profound spin-orbit physics in photonics. In this work, we present a
comprehensive theoretical investigation, implemented on the first-principles
base, of the intriguing light-matter interaction between VVBs and WSe$_{2}$
monolayers (WSe$_{2}$-MLs), one of the best-known and promising two-dimensional
(2D) materials in optoelectronics dictated by excitons, encompassing bright
exciton (BX) as well as various dark excitons (DXs). One of the key findings of
our study is the substantial enhancement of the photo-excitation of gray
excitons (GXs), a type of spin-forbidden dark exciton, in a WSe$_2$-ML through
the utilization of a twisted light that possesses a longitudinal field
associated with the optical spin-orbit interaction. Our research demonstrates
that a spin-orbit-coupled VVB surprisingly allows for the imprinting of the
carried optical information onto gray excitons in 2D materials, which is robust
against the decoherence mechanisms in materials. This observation suggests a
promising method for deciphering the transferred angular momentum from
structured lights to excitons.
The topotactic intercalation of transition-metal dichalcogenides with atomic
or molecular ions acts as an efficient knob to tune the electronic ground state
of the host compound. A representative material in this sense is
1$T$-TiSe$_{2}$, where the electric-field-controlled intercalations of lithium
or hydrogen trigger superconductivity coexisting with the charge-density wave
phase. Here, we use the nuclear magnetic moments of the intercalants in
hydrogen-intercalated 1$T$-TiSe$_{2}$ as local probes for nuclear magnetic
resonance experiments. We argue that fluctuating mesoscopic-sized domains
nucleate already at temperatures higher than the bulk critical temperature to
the charge-density wave phase and display cluster-glass-like dynamics in the
MHz range tracked by the $^{1}$H nuclear moments. Additionally, we observe a
well-defined independent dynamical process at lower temperatures that we
associate with the intrinsic properties of the charge-density wave state. In
particular, we ascribe the low-temperature phenomenology to the collective
phason-like motion of the charge-density wave being hindered by structural
defects and chemical impurities and resulting in a localized oscillating
motion.
The discovery of the Hat, an aperiodic monotile, has revealed novel
mathematical aspects of aperiodic tilings. However, the physics of particles
propagating in such a setting remains unexplored. In this work we study
spectral and transport properties of a tight-binding model defined on the Hat.
We find that (i) the spectral function displays striking similarities to that
of graphene, including six-fold symmetry and Dirac-like features; (ii) unlike
graphene, the monotile spectral function is chiral, differing for its two
enantiomers; (iii) the spectrum has a macroscopic number of degenerate states
at zero energy; (iv) when the magnetic flux per plaquette ($\phi$) is half of
the flux quantum, zero-modes are found localized around the reflected
`anti-hats'; and (v) its Hofstadter spectrum is periodic in $\phi$, unlike
other quasicrystals. Our work serves as a basis to study wave and electron
propagation in possible experimental realizations of the Hat, which we suggest.
We develop a practical machine learning approach to determine the disorder
landscape of Majorana nanowires by using training of the conductance matrix and
inverting the conductance data in order to obtain the disorder details in the
system. The inversion carried out through machine learning using different
disorder parametrizations turns out to be unique in the sense that any input
tunnel conductance as a function of chemical potential and Zeeman energy can
indeed be inverted to provide the correct disorder landscape. Our work opens up
a qualitatively new direction of directly determining the topological invariant
and the Majorana wave-function structure corresponding to a transport profile
of a device using simulations that quantitatively match the specific
conductance profile. In addition, this also opens up the possibility for
optimizing Majorana systems by figuring out the (generally unknown) underlying
disorder only through the conductance data. An accurate estimate of the
applicable spin-orbit coupling in the system can also be obtained within the
same scheme.
Superconductivity and superfluidity with anisotropic pairing -- such as
$d$-wave in cuprates and $p$-wave in superfluid $^3$He -- are strongly
suppressed by impurities. Meanwhile, for applications, the robustness of Cooper
pairs to disorder is highly desired. Recently, it has been suggested that
unconventional systems become robust if the impurity scattering mixes
quasiparticle states only within individual subsystems obeying the Anderson
theorem that protects conventional superconductivity. Here, we experimentally
verify this conjecture by measuring the temperature dependence of the energy
gap in the polar phase of superfluid $^3$He. We show that oriented columnar
non-magnetic defects do not essentially modify the energy spectrum, which has a
Dirac nodal line. Although the scattering is strong, it preserves the momentum
along the length of the columns and forms robust subsystems according to the
conjecture. This finding may stimulate future experiments on the protection of
topological superconductivity against disorder and on the nature of topological
fermionic flat bands.
Strange metals appear in a wide range of correlated materials. Electronic
localization-delocalization and the expected loss of quasiparticles
characterize beyond-Landau metallic quantum critical points and the associated
strange metals. Typical settings involve local spins. Systems that contain
entwined degrees of freedom offer new platforms to realize novel forms of
quantum criticality. Here, we study the fate of an SU(4) spin-orbital Kondo
state in a multipolar Bose-Fermi Kondo model, which provides an effective
description of a multipolar Kondo lattice, using a renormalization-group
method. We show that at zero temperature a generic trajectory in the model's
parameter space contains two quantum critical points, which are associated with
the destruction of Kondo entanglement in the orbital and spin channels
respectively. Our asymptotically exact results reveal an overall phase diagram,
provide the theoretical basis to understand puzzling recent experiments of a
multipolar heavy fermion metal, and point to a means of designing new forms of
quantum criticality and strange metallicity in a variety of strongly correlated
systems.
Poincar\'e-gravity modes described by the shallow water equations in a
rotating frame have non-trivial topology, providing a new perspective on the
origin of equatorially trapped Kelvin and Yanai waves. We investigate the
topology of rotating shallow water equations and continuously stratified
primitive equations in the presence of a background sinusoidal shear flow. The
introduction of a background shear flow not only breaks the Hermiticity and
homogeneity of the system but also leads to instabilities. We show that
singularities in the phase of the Poincar\'e waves of the unforced
shallow-water equations and primitive equations persist in the presence of
shear. Thus the bulk Poincar\'e bands have non-trivial topology and we expect
and confirm the persistence of the equatorial waves in the presence of shear
along the equator where the Coriolis parameter $f$ changes sign.
We systematically investigate the chiral anomaly and ferroelectric
polariation in type-II Weyl semimetal WTe$_{2}$ in $T_{d}$ phase. The chiral
anomaly can be observed by the measurement of Hall effect which reflect the
anisotropic character of the response to the magnetic field applied in
different directions. Extremely large magnetoresistance, asymmetry character
with respect to magnetic field, and low critical temperature for the Hall
resistivity (for metal-insulator phase transition) are observed, where the
observations about the $R_{xx}-T$ curve indicate possible electronic structure
transition below 40 K. Also, our theoretical calculation and numerical
simulation provide a deeper insight to the electrical structure-dependent
dynamics of WTe$_{2}$. Base on the two-level approximation verify that the
polarization stems from uncompensated out-of-plane interband transition of the
electrons, which is base on the calculations of the dipole transition moment
(in both the momentum space and frequency domain), and we found that the
topological character of type-II Weyl system is closely related to the
electronic behaviors (like the carrier compensation) and the excitations near
the Weyl cone. Part of the properties of WTe$_{2}$ are also shares shared by
the thermoelectric properties with other two-dimensional transition-metal
dichalcogenides, like the WSe$_{2}$ and MoTe$_{2}$.
Monolayer graphene absorbs 2.3 percent of the incident visible light. This
'small' absorption has been used to emphasize the visual transparency of
graphene, but it in fact means that multilayer graphene absorbs a sizable
fraction of incident light, which causes non-negligible fluorescence. In this
paper, we formulate the light emission properties of multilayer graphene
composed of tens to hundreds of layers using a transfer matrix method and
confirm the method's validity experimentally. We could quantitatively explain
the measured contrasts of multilayer graphene on SiO$_2$/Si substrates and
found sizable corrections, which cannot be classified as incoherent light
emissions, to the reflectance of visible light. The new component originates
from coherent emission caused by absorption at each graphene layer. Multilayer
graphene thus functions as a partial coherent light source of various
wavelengths, and it may have surface-emitting laser applications.
Motivated by the recent proposal of giant Kerr rotation in WSMs, we
investigate the Kerr and Faraday rotations in time-reversal broken multi-Weyl
semimetals (mWSMs) in the absence of an external magnetic field. Using the
framework of Kubo response theory, we find that both the longitudinal and
transverse components of the optical conductivity in mWSMs are modified by the
topological charge ($n$). Engendered by the optical Hall conductivity, we show
in the thin film limit that, while the giant Kerr rotation and corresponding
ellipticity are independent of $n$, the Faraday rotation and its ellipticity
angle scale as $n$ and $n^2$, respectively. In contrast, the polarization
rotation in semi-infinite mWSMs is dominated by the axion field showing $n$
dependence. In particular, the magnitude of Kerr (Faraday) angle decreases
(increases) with increasing $n$ in Faraday geometry, whereas in Voigt geometry,
it depicts different $n$-dependencies in different frequency regimes. The
obtained results on the behavior of polarization rotations in mWSMs could be
used in experiments as a probe to distinguish single, double, and triple WSMs,
as well as discriminate the surfaces of mWSMs with and without hosting Fermi
arcs.
We propose a physical picture based on the wormhole effect of the
path-integral formulation to explain the mechanism of entanglement spectrum
(ES), such that, our picture not only explains the topological state with
bulk-edge correspondence of the energy spectrum and ES (the Li and Haldane
conjecture), but is generically applicable to other systems independent of
their topological properties. We point out it is ultimately the relative
strength of bulk energy gap (multiplied with inverse temperature $\beta=1/T$)
with respect to the edge energy gap that determines the behavior of the
low-lying ES of the system. Depending on the circumstances, the ES can resemble
the energy spectrum of the virtual edge, but can also represent that of the
virtual bulk. We design models both in 1D and 2D to successfully demonstrate
the bulk-like low-lying ES at finite temperatures, in addition to the edge-like
case conjectured by Li and Haldane at zero temperature. Our results support the
generality of viewing the ES as the wormhole effect in the path integral and
the different temperature-dependence for the edge and bulk of ES.
Motivated by the observation of a pair density wave (PDW) in the kagome metal
CsV${}_3$Sb${}_5$, we consider the fate of electrons near a p-type van Hove
singularity (vHS) in the presence of local repulsive interactions. We study the
effect of such interactions on Fermi surface "patches" at the vHS. We show how
a feature unique to the Kagome lattice known as sublattice interference
crucially affects the form of the interactions among the patches. The
renormalization group (RG) flow of such interactions results in a regime where
the nearest neighbor interaction $V$ exceed the onsite repulsion $U$. We
identify this condition as being favorable for the formation of
charge-density-wave (CDW) and PDW orders. In the weak coupling limit, we find a
complex CDW order as the leading instability, which breaks time reversal
symmetry. Beyond RG, we perform a Hartree-Fock study to a $V$-only model and
find the pair-density-wave order indeed sets in at some intermediate coupling.
Heat transport is a fundamental property of all physical systems and can
serve as a fingerprint identifying different states of matter. In a normal
liquid a hot spot diffuses while in a superfluid heat propagates as a wave
called second sound. Despite its importance for understanding quantum
materials, direct imaging of heat transport is challenging, and one usually
resorts to detecting secondary effects, such as changes in density or pressure.
Here we establish thermography of a strongly interacting atomic Fermi gas, a
paradigmatic system whose properties relate to strongly correlated electrons,
nuclear matter and neutron stars. Just as the color of a glowing metal reveals
its temperature, the radiofrequency spectrum of the interacting Fermi gas
provides spatially resolved thermometry with sub-nanokelvin resolution. The
superfluid phase transition is directly observed as the sudden change from
thermal diffusion to second sound propagation, and is accompanied by a peak in
the second sound diffusivity. The method yields the full heat and density
response of the strongly interacting Fermi gas, and therefore all defining
properties of Landau's two-fluid hydrodynamics. Our measurements serve as a
benchmark for theories of transport in strongly interacting fermionic matter.
We numerically study a mesoscopic system consisting of magnetic nanorings in
the presence of thermal magnetization fluctuations. We find the formation of
dipolar-field-mediated ``bonds" promoting the formation of annuli clusters,
where the amount of bonds between two rings varies between zero and two. This
system resembles the formation of polymers from artificial atoms, which in our
case are the annuli and where the valency of the atom is set by the ring
multipolarity. We investigate the thermodynamic properties of the resulting
structures, and find a transition associated with the formation of the bonds.
In addition, we find that the system has a tendency to form topological
structures, with a distinct critical temperature in relation to the one for
bond formation.
Antiferromagnets (AFMs) are promising materials for future high-frequency
field-free spintronic applications. Self-localized spin structures can enhance
their capabilities and introduce new functionalities to AFM-based devices. Here
we consider a domain wall (DW), a topological soliton that bridges a connection
between two ground states, similar to a Josephson junction (JJ) link between
two superconductors. We demonstrate the similarities between DWs in bi-axial
AFM with easy-axis primary anisotropy, driven by a spin current, and long
Josephson junctions (LJJs). We found that the Bloch line (BL) in DWs resembles
the fluxon state of JJs, creating a close analogy between the two systems. We
propose a scheme that allows us to create, move, read, and delete such BLs.
This transmission line operates at room temperature and can be dynamically
reconfigured in contrast to superconductors. Results of a developed model were
confirmed by micromagnetic simulations for Cr$_2$O$_3$ and DyFeO$_3$, i.e.,
correspondingly with weak and strong in-plane anisotropy. Overall, the proposed
scheme has significant potential for use in magnetic memory and logic devices.
Lagrangian turbulence lies at the core of numerous applied and fundamental
problems related to the physics of dispersion and mixing in engineering,
bio-fluids, atmosphere, oceans, and astrophysics. Despite exceptional
theoretical, numerical, and experimental efforts conducted over the past thirty
years, no existing models are capable of faithfully reproducing statistical and
topological properties exhibited by particle trajectories in turbulence. We
propose a machine learning approach, based on a state-of-the-art Diffusion
Model, to generate single-particle trajectories in three-dimensional turbulence
at high Reynolds numbers, thereby bypassing the need for direct numerical
simulations or experiments to obtain reliable Lagrangian data. Our model
demonstrates the ability to quantitatively reproduce all relevant statistical
benchmarks over the entire range of time scales, including the presence of fat
tails distribution for the velocity increments, anomalous power law, and
enhancement of intermittency around the dissipative scale. The model exhibits
good generalizability for extreme events, achieving unprecedented intensity and
rarity. This paves the way for producing synthetic high-quality datasets for
pre-training various downstream applications of Lagrangian turbulence.

Date of feed: Fri, 21 Jul 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]+) **Adaptive Trotterization for time-dependent Hamiltonian quantum dynamics using instantaneous conservation laws. (arXiv:2307.10327v1 [quant-ph])**

Hongzheng Zhao, Marin Bukov, Markus Heyl, Roderich Moessner

**Spin Space Groups: Full Classification and Applications. (arXiv:2307.10364v1 [cond-mat.mes-hall])**

Zhenyu Xiao, Jianzhou Zhao, Yanqi Li, Ryuichi Shindou, Zhi-Da Song

**Enumeration and representation of spin space groups. (arXiv:2307.10369v1 [cond-mat.mtrl-sci])**

Jun Ren, Xiaobing Chen, Yanzhou Zhu, Yutong Yu, Ao Zhang, Jiayu Li, Caiheng Li, Qihang Liu

**Enumeration of spin-space groups: Towards a complete description of symmetries of magnetic orders. (arXiv:2307.10371v1 [cond-mat.mtrl-sci])**

Yi Jiang, Ziyin Song, Tiannian Zhu, Zhong Fang, Hongming Weng, Zheng-Xin Liu, Jian Yang, Chen Fang

**Effects of nucleation at a first-order transition between two superconducting phases: Application to CeRh$_2$As$_2$. (arXiv:2307.10374v1 [cond-mat.supr-con])**

András L. Szabó, Mark H. Fischer, Manfred Sigrist

**Vacancy spectroscopy of non-Abelian Kitaev spin liquids. (arXiv:2307.10376v1 [cond-mat.str-el])**

Wen-Han Kao, Natalia B. Perkins, Gábor B. Halász

**Magnetization amplification in the interlayer pairing superconductor 4Hb-TaS$_2$. (arXiv:2307.10389v1 [cond-mat.supr-con])**

Chunxiao Liu, Shubhayu Chatterjee, Thomas Scaffidi, Erez Berg, Ehud Altman

**Low-Thermal-Budget Ferroelectric Field-Effect Transistors Based on CuInP2S6 and InZnO. (arXiv:2307.10473v1 [cond-mat.mes-hall])**

Hojoon Ryu, Junzhe Kang, Minseong Park, Byungjoon Bae, Zijing Zhao, Shaloo Rakheja, Kyusang Lee, Wenjuan Zhu

**Photo-excited charge carrier lifetime enhanced by slow cation molecular dynamics in lead iodide perovskite FAPbI$_3$. (arXiv:2307.10520v1 [cond-mat.mtrl-sci])**

M. Hiraishi, A. Koda, H. Okabe, R. Kadono, K. A. Dagnall, J. J. Choi, S.-H. Lee

**Controllable Incremental Algorithm for Entanglement Entropy and Other Observables with Exponential Variance Explosion in Many-Body Systems. (arXiv:2307.10602v1 [cond-mat.str-el])**

Yuan Da Liao

**Double exchange, itinerant ferromagnetism and topological Hall effect in moir\'{e} heterobilayer. (arXiv:2307.10613v1 [cond-mat.str-el])**

Haichen Jia, Bowen Ma, Rui Leonard Luo, Gang Chen

**Superconductivity in a van der Waals layered quasicrystal. (arXiv:2307.10679v1 [cond-mat.mtrl-sci])**

Yuki Tokumoto, Kotaro Hamano, Sunao Nakagawa, Yasushi Kamimura, Shintaro Suzuki, Ryuji Tamura, Keiichi Edagawa

**Observation of long-range ferromagnetism via anomalous supercurrents in a spin-orbit coupled superconductor. (arXiv:2307.10722v1 [cond-mat.supr-con])**

B. K. Xiang, Y. S. Lin, Q. S. He, J. J. Zhu, B. R. Chen, Y. F. Wang, K. Y. Liang, Z. J. Li, H. X. Yao, C. X. Wu, T. Y. Zhou, M. H. Fang, Y. Lu, I. V. Tokatly, F. S. Bergeret, Y. H. Wang

**Two-Dimensional Platinum Telluride with Ordered Te Vacancy Superlattice for Efficient and Robust Hydrogen Evolution. (arXiv:2307.10759v1 [cond-mat.mtrl-sci])**

Xin Xu, Xuechun Wang, Shuming Yu, Guowei Liu, Yaping Ma, Hao Li, Jiangang Yang, Chenhui Wang, Jing Li, Tao Sun, Weifeng Zhang, Kedong Wang, Nan Xu, Fangfei Ming, Ping Cui, Zhenyu Zhang, Xudong Xiao

**Dissipative systems fractionally coupled to a bath. (arXiv:2307.10795v1 [cond-mat.stat-mech])**

Audrique Vertessen, Robin C. Verstraten, Cristiane Morais Smith

**Magnon Spin Photogalvanic Effect in Collinear Ferromagnets. (arXiv:2307.10882v1 [cond-mat.mes-hall])**

YuanDong Wang, Zhen-Gang Zhu, Gang Su

**Enhanced photo-excitation and angular-momentum imprint of gray excitons in WSe$_{2}$ monolayers by spin-orbit-coupled vector vortex beams. (arXiv:2307.10916v1 [cond-mat.mes-hall])**

Oscar Javier Gomez Sanchez, Guan-Hao Peng, Wei-Hua Li, Ching-Hung Shih, Chao-Hsin Chien, Shun-Jen Cheng

**Cluster charge-density-wave glass in hydrogen-intercalated TiSe$_{2}$. (arXiv:2307.10979v1 [cond-mat.str-el])**

Giacomo Prando, Erik Piatti, Dario Daghero, Renato S. Gonnelli, Pietro Carretta

**Physical properties of the Hat aperiodic monotile: Graphene-like features, chirality and zero-modes. (arXiv:2307.11054v1 [cond-mat.mes-hall])**

Justin Schirmann, Selma Franca, Felix Flicker, Adolfo G. Grushin

**Machine learning Majorana nanowire disorder landscape. (arXiv:2307.11068v1 [cond-mat.mes-hall])**

Jacob R. Taylor, Jay D. Sau, Sankar Das Sarma

**Topological nodal line in superfluid $^3$He and the Anderson theorem. (arXiv:1908.01645v5 [cond-mat.other] UPDATED)**

T. Kamppinen, J. Rysti, M.-M. Volard, G.E. Volovik, V.B. Eltsov

**Quantum Criticality Enabled by Intertwined Degrees of Freedom. (arXiv:2101.01087v2 [cond-mat.str-el] UPDATED)**

Chia-Chuan Liu, Silke Paschen, Qimiao Si

**Topology of rotating stratified fluids with and without background shear flow. (arXiv:2112.04691v2 [physics.flu-dyn] UPDATED)**

Ziyan Zhu, Christopher Li, J. B. Marston

**Chiral anomaly and ferroelectric polarization in type-II Weyl semimetal WTe$_{2}$. (arXiv:2112.10266v4 [cond-mat.stat-mech] UPDATED)**

Chen-Huan Wu

**Corrections to the reflectance of multilayer graphene by light emission. (arXiv:2208.01311v3 [cond-mat.mtrl-sci] UPDATED)**

Ken-ichi Sasaki, Kenichi Hitachi, Masahiro Kamada, Takamoto Yokosawa, Taisuke Ochi, Tomohiro Matsui

**Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals. (arXiv:2209.11217v5 [cond-mat.mes-hall] UPDATED)**

Supriyo Ghosh, Ambaresh Sahoo, Snehasish Nandy

**Different temperature-dependence for the edge and bulk of entanglement Hamiltonian. (arXiv:2210.10062v2 [quant-ph] UPDATED)**

Menghan Song, Jiarui Zhao, Zheng Yan, Zi Yang Meng

**Sublattice Interference promotes Pair Density Wave order in Kagome Metals. (arXiv:2211.01388v2 [cond-mat.str-el] UPDATED)**

Yi-Ming Wu, Ronny Thomale, S. Raghu

**Thermography of the superfluid transition in a strongly interacting Fermi gas. (arXiv:2212.13752v2 [cond-mat.quant-gas] UPDATED)**

Zhenjie Yan, Parth B. Patel, Biswaroop Mukherjee, Chris J. Vale, Richard J. Fletcher, Martin Zwierlein

**Polymerization in magnetic metamaterials. (arXiv:2302.11353v2 [cond-mat.mes-hall] UPDATED)**

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

**Antiferromagnetic Bloch line driven by spin current as room-temperature analog of a fluxon in a long Josephson junction. (arXiv:2305.02276v2 [cond-mat.mes-hall] UPDATED)**

R.V. Ovcharov, B.A. Ivanov, J. Åkerman, R. S. Khymyn

**Synthetic Lagrangian Turbulence by Generative Diffusion Models. (arXiv:2307.08529v1 [physics.flu-dyn] CROSS LISTED)**

Tianyi Li, Luca Biferale, Fabio Bonaccorso, Martino Andrea Scarpolini, Michele Buzzicotti

Found 9 papers in prb We have developed a tensor network approach to the two-dimensional fully frustrated classical XY spin model on the kagome lattice, and clarified the nature of the possible phase transitions of various topological excitations. We find that the standard tensor network representation for the partition … We present an experimental study of bilayers of a disordered Ag metal layer close to the metal-insulator transition and an indium-oxide film which is on the insulating side of the superconductor insulator transition. Our results show that superconducting fluctuations within the indium-oxide film, th… We have performed $^{115}\mathrm{In}$-NMR spectroscopy for ${\mathrm{Ni}}_{2}{\mathrm{InSbO}}_{6}$ with corundum-related crystal structure to reveal magnetic structures that develop in high magnetic fields. At low fields ${\mathrm{Ni}}_{2}{\mathrm{InSbO}}_{6}$ shows a helical magnetic order with a l… Grazing incidence fast-atom diffraction (GIFAD) uses keV atoms to probe the topmost layer of crystalline surfaces. The atoms are scattered by the potential energy landscape of the surface onto elastic diffraction spots located at the Bragg angles and on the Laue circle. However, atoms transfer a sig… Using the density-matrix formalism, we show that graphene nanomeshes (GNMs)—graphene sheets patterned with antidots—have large plasmon-enhanced nonlinear optical response. GNMs can be designed to behave as quasi-one-dimensional plasmonic crystals in which plasmons with large propagation lengths are … The relative strength of different proximity spin-orbit couplings in graphene on transition metal dichalcogenides (TMDCs) can be tuned via the metal composition in the TMDC layer. While ${\mathrm{Gr}/\mathrm{MoSe}}_{2}$ has a normal gap, proximity to ${\mathrm{WSe}}_{2}$ instead leads to valley-Zeem… Our understanding of quantum symmetry of systems has considerably broadened over the last decade. The idea of symmetry has become intrinsically linked with topology described and algebraically characterized by higher categories. Studying three-dimensional systems with noninvertible symmetries, the authors show here that these symmetries are in general incompatible with a unique gapped ground state. Their results extend the ideas behind the Lieb-Shultz-Mattis theorem to the arena of higher-dimensional field theories invariant under a novel class of symmetries. Two-dimensional superconductors have been realized in various atomically thin films such as the twisted bilayer graphene, some of which are anticipated to involve an unconventional pairing mechanism. Due to their low dimensionality, experimental probes of the exact nature of superconductivity in the… The spin-valley physics of monolayer transition metal dichalcogenides (TMDs) remains one of the main interests in the class of van der Waals materials. At low temperature, it is mainly driven by the electron-hole exchange interaction (EHEI) that describes the annihilation of an exciton in one valley and the creation of an exciton in the time-reversal equivalent valley. Here, the authors show that the EHEI in monolayer TMDs is biaxial strain dependent and, surprisingly, it is an order of magnitude more strain dependent than expected from these first principles calculations. This points to a valley scattering channel that has not been considered in the literature so far.

Date of feed: Fri, 21 Jul 2023 03:17:13 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]+) **Tensor network approach to the fully frustrated XY model on a kagome lattice with a fractional vortex-antivortex pairing transition**

Feng-Feng Song and Guang-Ming Zhang

Author(s): Feng-Feng Song and Guang-Ming Zhang

[Phys. Rev. B 108, 014424] Published Thu Jul 20, 2023

**Proximitized insulators from disordered superconductors**

Moshe Haim, David Dentelski, and Aviad Frydman

Author(s): Moshe Haim, David Dentelski, and Aviad Frydman

[Phys. Rev. B 108, 014505] Published Thu Jul 20, 2023

**Field-induced magnetic structures in the chiral polar antiferromagnet ${\mathrm{Ni}}_{2}{\mathrm{InSbO}}_{6}$**

Y. Ihara, R. Hiyoshi, M. Shimohashi, R. Kumar, T. Sasaki, M. Hirata, Y. Araki, Y. Tokunaga, and T. Arima

Author(s): Y. Ihara, R. Hiyoshi, M. Shimohashi, R. Kumar, T. Sasaki, M. Hirata, Y. Araki, Y. Tokunaga, and T. Arima

[Phys. Rev. B 108, 024417] Published Thu Jul 20, 2023

**Lateral line profiles in fast-atom diffraction at surfaces**

Peng Pan, Carina Kanitz, Maxime Debiossac, Alex Le-Guen, Jaafar Najafi Rad, and Philippe Roncin

Author(s): Peng Pan, Carina Kanitz, Maxime Debiossac, Alex Le-Guen, Jaafar Najafi Rad, and Philippe Roncin

[Phys. Rev. B 108, 035413] Published Thu Jul 20, 2023

**Plasmon-enhanced optical nonlinearity in graphene nanomeshes**

F. Karimi, S. Mitra, S. Soleimanikahnoj, and I. Knezevic

Author(s): F. Karimi, S. Mitra, S. Soleimanikahnoj, and I. Knezevic

[Phys. Rev. B 108, 035414] Published Thu Jul 20, 2023

**Emergence of interface states in graphene/transition metal dichalcogenide heterostructures with lateral interface**

Zahra Khatibi and Stephen R. Power

Author(s): Zahra Khatibi and Stephen R. Power

[Phys. Rev. B 108, 035415] Published Thu Jul 20, 2023

**Obstructions to gapped phases from noninvertible symmetries**

Anuj Apte, Clay Córdova, and Ho Tat Lam

Author(s): Anuj Apte, Clay Córdova, and Ho Tat Lam

[Phys. Rev. B 108, 045134] Published Thu Jul 20, 2023

**Supercurrent-induced anomalous thermal Hall effect as a new probe to superconducting gap anisotropy**

Xiaodong Hu, Jung Hoon Han, and Ying Ran

Author(s): Xiaodong Hu, Jung Hoon Han, and Ying Ran

[Phys. Rev. B 108, L041106] Published Thu Jul 20, 2023

**Strain control of exciton and trion spin-valley dynamics in monolayer transition metal dichalcogenides**

Z. An, P. Soubelet, Y. Zhumagulov, M. Zopf, A. Delhomme, C. Qian, P. E. Faria Junior, J. Fabian, X. Cao, J. Yang, A. V. Stier, F. Ding, and J. J. Finley

Author(s): Z. An, P. Soubelet, Y. Zhumagulov, M. Zopf, A. Delhomme, C. Qian, P. E. Faria Junior, J. Fabian, X. Cao, J. Yang, A. V. Stier, F. Ding, and J. J. Finley

[Phys. Rev. B 108, L041404] Published Thu Jul 20, 2023

Found 1 papers in prl In this Letter, we introduce the concept of dynamical degeneracy splitting to describe the anisotropic decay behaviors in non-Hermitian systems. We demonstrate that systems with dynamical degeneracy splitting exhibit two distinctive features: (i) the system shows frequency-resolved non-Hermitian ski…

Date of feed: Fri, 21 Jul 2023 03:17:11 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]+) **Dynamical Degeneracy Splitting and Directional Invisibility in Non-Hermitian Systems**

Kai Zhang, Chen Fang, and Zhesen Yang

Author(s): Kai Zhang, Chen Fang, and Zhesen Yang

[Phys. Rev. Lett. 131, 036402] Published Thu Jul 20, 2023

Found 2 papers in pr_res For studies on thermalization of an isolated quantum many-body system, the fundamental issue is to determine whether a given system thermalizes or not. However, most studies tested only a small number of observables, and it was unclear whether other observables thermalize. Here, we study whether “li… The addition of a confining potential allows a noninteracting disordered system to have superexponentially (Gaussian) localized wave functions and an interacting disordered system to undergo a localization transition. Gaussian localization shifts the quantum avalanche critical dimension from $d$ = 1 to $d$ = 2, allowing the MBL phase to exist in low-dimensional systems.

Date of feed: Fri, 21 Jul 2023 03:17:13 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]+) **Key observable for linear thermalization**

Yuuya Chiba and Akira Shimizu

Author(s): Yuuya Chiba and Akira Shimizu

[Phys. Rev. Research 5, 033037] Published Thu Jul 20, 2023

**Stabilization mechanism for many-body localization in two dimensions**

D. C. W. Foo, N. Swain, P. Sengupta, G. Lemarié, and S. Adam

Author(s): D. C. W. Foo, N. Swain, P. Sengupta, G. Lemarié, and S. Adam

[Phys. Rev. Research 5, L032011] Published Thu Jul 20, 2023

Found 1 papers in acs-nano

Date of feed: Thu, 20 Jul 2023 13:07:52 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]+) **[ASAP] Graphene Sensor Arrays for Rapid and Accurate Detection of Pancreatic Cancer Exosomes in Patients’ Blood Plasma Samples**

Tianyi Yin, Lizhou Xu, Bruno Gil, Nabeel Merali, Maria S. Sokolikova, David C. A. Gaboriau, Daniel S. K. Liu, Ahmad Nizamuddin Muhammad Mustafa, Sarah Alodan, Michael Chen, Oihana Txoperena, María Arrastua, Juan Manuel Gomez, Nerea Ontoso, Marta Elicegui, Elias Torres, Danyang Li, Cecilia Mattevi, Adam E. Frampton, Long R. Jiao, Sami Ramadan, and Norbert KleinACS NanoDOI: 10.1021/acsnano.3c01812

Found 1 papers in nat-comm **Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+) **Imaging the electron charge density in monolayer MoS2 at the Ångstrom scale**

< 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]+) **Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals, by Supriyo Ghosh, Ambaresh Sahoo, Snehasish Nandy**

< author missing >

Submitted on 2023-07-21, refereeing deadline 2023-08-26.