Found 29 papers in cond-mat The unexpected discovery of superconductivity and strong electron correlation
in twisted bilayer graphene (TBG), a system containing only sp electrons, is
considered as one of the most intriguing developments in two-dimensional
materials in recent years. The key feature is the emergent flat energy bands
near the Fermi level, a favorable condition for novel many-body phases, at the
so-called "magic angles". The physical origin of these interesting flat bands
has been elusive to date, hindering the construction of an effective theory for
the unconventional electron correlation. In this work, we have identified the
importance of charge accumulation in the AA region of the moire supercell and
the most critical role of the Fermi ring in AA-stacked bilayer graphene. We
show that the magic angles can be predicted by the moire periodicity determined
by the size of this Fermi ring. The resonant criterion in momentum space makes
it possible to coherently combine states on the Fermi ring through scattering
by the moire potential, leading to flat bands near the Fermi level. We thus
establish the physical origin of the magic angles in TBG and identify the
characteristics of one-particle states associated with the flat bands for
further many-body investigations.
We discuss general properties of perturbative RG flows in AdS with a focus on
the treatment of boundary conditions and infrared divergences. In contrast with
flat-space boundary QFT, general covariance in AdS implies the absence of
independent boundary flows. We illustrate how boundary correlation functions
remain conformally covariant even if the bulk QFT has a scale. We apply our
general discussion to the RG flow between consecutive unitary diagonal minimal
models which is triggered by the $\phi_{(1,3)}$ operator. For these theories we
conjecture a flow diagram whose form is significantly simpler than that in
flat-space boundary QFT. In several stand-alone appendices we discuss
two-dimensional BCFTs in general and the minimal model BCFTs in particular.
These include both an extensive review as well as the computation of several
new BCFT correlation functions.
We investigate the physics of one-dimensional symmetry protected topological
(SPT) phases protected by symmetries whose symmetry generators exhibit spatial
modulation. We focus in particular on phases protected by symmetries with
linear (i.e., dipolar), quadratic and exponential modulations. We present a
simple recipe for constructing modulated SPT models by generalizing the concept
of decorated domain walls to spatially modulated symmetry defects, and develop
several tools for characterizing and classifying modulated SPT phases. A
salient feature of modulated symmetries is that they are generically only
present for open chains, and are broken upon the imposition of periodic
boundary conditions. Nevertheless, we show that SPT order is present even with
periodic boundary conditions, a phenomenon we understand within the context of
an object we dub a ``bundle symmetry''. In addition, we show that modulated SPT
phases can avoid a certain no-go theorem, leading to an unusual algebraic
structure in their matrix product state descriptions.
We introduce a stabilizer code model with a qutrit at every edge of a
two-dimensional lattice and with non-invertible plaquette operators. The
degeneracy of the ground state is topological (determined by the genus) as in
the toric code, and it also has the usual deconfined excitations consisting of
pairs of electric and magnetic charges. However, there are novel types of
confined fractonic excitations composed of a cluster of adjacent faces
(defects) with vanishing flux. They manifest confinement, and even larger
configurations of these fractons are fully immobile although they acquire
emergent internal degrees of freedom. Deconfined excitations change their
nature in presence of these fractonic defects. As for instance, a magnetic
monopole can exist anywhere on the lattice exterior to a fractonic defect
cluster while electric charges acquire restricted mobility. These imply that
our model featuring fractons is neither of type I, nor of type II. Furthermore,
local operators can annihilate the ground state. All these properties can be
captured via a novel type of non-commutative and non-Abelian fusion category in
which the product is associative but does not commute, and can be expressed as
a sum of (operator) equivalence classes which includes that of the zero
operator. We introduce many other variants of this model and discuss their
relevance in quantum field theory.
In Hermitian continuous media, the spectral-flow index of topological edge
modes is linked to the bulk topology via index theorem. However, most
inhomogeneous continuous media in classical fluids and plasmas are
non-Hermitian. We show that the connection between topological edge modes and
bulk topology still exists in these non-Hermitian continuous media if the
systems are PT-symmetric and asymptotically Hermitian. The theoretical
framework developed is applied to the Hall magnetohydrodynamic model to
identify a topological edge mode called topological Alfv\'{e}n-sound wave in
magnetized plasmas.
A quadratic band crossing (QBC) is a crossing of two bands with quadratic
dispersion, which has been intensively investigated due to its appearance in
Bernal-stacked bilayer graphene. Here, we study an extension of QBCs, the
triply degenerate quadratic band crossing (TQBC), which is a three-band
crossing node containing two quadratic dispersing bands and a flat band. We
focus on two types of TQBCs. The first type contains a symmetry-protected QBC
and a free-electron band, the prototype of which is the AA-stacked bilayer
squareoctagon lattice. In a magnetic field, such a TQBC exhibits an anomalous
Landau level structure, leading to a distinctive quantum Hall effect which
displays an infinite ladder of Hall plateaus when the chemical potential
approaches zero. The other type of TQBC can be viewed as a pseudospin-1
extension of the bilayer-graphene QBC. Under perturbations, this type of TQBCs
may split into linear pseudospin-1 Dirac-Weyl fermions. When tunneling through
a potential barrier, the transmission probability of the first type decays
exponentially with the barrier width for any incident angle, similar to the
free-electron case, while the second type hosts an all-angle perfect reflection
when the energy of the incident particles is equal to half the barrier height.
Magnetism plays a key role in the emergence of topological phenomena in the
Weyl semimetal Co3Sn2S2, which exhibits a ferromagnetic (FM) interactions along
the c-axis of the crystal and an antiferromagnetic (AFM) interactions within
the ab plane. Extensive studies on the temperature dependence of the magnetism
with the magnetic field along the c-axis have uncovered a number of magnetic
phases. Currently, the nature and origins of the reported magnetic phases are
under debate. Here we report on magnetic field orientation effects on the
magnetism in Co3Sn2S2. The shape of the hysteresis loop of the Hall resistance
at a fixed temperature is found to change from rectangular to bow-tie-like as
the magnetic field is tilted from the c-axis towards the ab plane, resembling
that reported for magnetic fields along the c-axis as the temperature
approaches the Curie temperature from below. Unlike their temperature-dependent
counterparts, the newly observed bow-tie-like hysteresis loops show exchange
bias. Our results showcase the contribution of the in-plane AFM interactions to
the magnetism in Co3Sn2S2 and demonstrate a new way to tune its magnetic
phases. They also shed light on the temperature-dependent magnetic phases
occurring in the magnetic field along the c-axis of the crystal.
The quasi-one-dimensional chiral compound (TaSe$_4$)$_2$I has been
extensively studied as a prime example of a topological Weyl semimetal. Upon
crossing its phase transition temperature $T_\textrm{CDW}$ $\approx$ 263 K,
(TaSe$_4$)$_2$I exhibits incommensurate charge density wave (CDW) modulations
described by the well-defined propagation vector $\sim$(0.05, 0.05, 0.11),
oblique to the TaSe$_4$ chains. Although optical and transport properties
greatly depend on chirality, there is no systematic report about chiral domain
size for (TaSe$_4$)$_2$I. In this study, our single-crystal scattering
refinements reveal a bulk iodine deficiency, and Flack parameter measurements
on multiple crystals demonstrate that separate (TaSe$_4$)$_2$I crystals have
uniform handedness, supported by direct imaging and helicity dependent THz
emission spectroscopy. Our single-crystal X-ray scattering and calculated
diffraction patterns identify multiple diffuse features and create a real-space
picture of the temperature-dependent (TaSe$_4$)$_2$I crystal structure. The
short-range diffuse features are present at room temperature and decrease in
intensity as the CDW modulation develops. These transverse displacements, along
with electron pinning from the iodine deficiency, help explain why
(TaSe$_4$)$_2$I behaves as an electronic semiconductor at temperatures above
and below $T_\textrm{CDW}$, despite a metallic band structure calculated from
density functional theory of the ideal structure.
The chiral nature of active matter plays an important role in the dynamics of
active matter interacting with chiral structures. Magnetic skyrmions are chiral
objects, and their interaction with chiral nanostructures can lead to
intriguing phenomena. Here, we explore the dynamics of a thermally activated
chiral skyrmion interacting with a chiral flower-like obstacle in a
ferromagnetic layer with chiral exchange interactions. The chiralities from
different aspects in the studied system give rise to nontrivial random-walk
dynamics that may have implications for spintronic applications. We demonstrate
that the thermal random walk of chiral skyrmions interacting with chiral
flowers could lead to deterministic outcomes that are topology-dependent. It is
a spontaneous mesoscopic order-from-disorder phenomenon driven by the thermal
fluctuations and topological nature of skyrmions, which exists only in
ferromagnetic and ferrimagnetic substrates with chiral flower-like obstacles.
The interactions between the skyrmions and chiral flowers at finite
temperatures can be utilized to control the skyrmion position and distribution
without the application of any external driving force or temperature gradient.
The fact that a thermally activated skyrmion could be dynamically coupled to a
chiral flower may open a new way for the design of topological sorting devices
based on chiral flower-like nanostructures.
The concept of \emph{complexity} has become pivotal in multiple disciplines,
including quantum information, where it serves as an alternative metric for
gauging the chaotic evolution of a quantum state. This paper focuses on
\emph{Krylov complexity}, a specialized form of quantum complexity that offers
an unambiguous and intrinsically meaningful assessment of the spread of a
quantum state over all possible orthogonal bases. Our study is situated in the
context of Gaussian quantum states, which are fundamental to both Bosonic and
Fermionic systems and can be fully described by a covariance matrix. We show
that while the covariance matrix is essential, it is insufficient alone for
calculating Krylov complexity due to its lack of relative phase information.
Our findings suggest that the relative covariance matrix can provide an upper
bound for Krylov complexity for Gaussian quantum states. We also explore the
implications of Krylov complexity for theories proposing complexity as a
candidate for holographic duality by computing Krylov complexity for the
thermofield double States (TFD) and Dirac field.
The mechanism of high-temperature superconductivity remains one of the great
challenges of contemporary physics. Here, we review efforts to image the vortex
lattice in copper oxide-based high-temperature superconductors and to measure
the characteristic electronic structure of the vortex core of a $d$-wave
superconductor using scanning tunneling spectroscopy.
Appearance of quantum oscillations (QO) in both thermodynamic and transport
properties of metals at low temperatures is the most striking experimental
consequence of the existence of a Fermi surface (FS). The frequency of these
oscillations and the temperature dependence of their amplitude provides
essential information about the FS topology and fermionic quasiparticle
properties. Here, we report the observation of an anomalous suppression of the
QO amplitude seen in resistivity (Shubnikov de-Haas effect) at sub-kelvin
temperatures in ZrTe5 samples with a single small FS sheet comprising less than
5% of the first Brillouin zone. By comparing these results with measurements of
the magneto-acoustic QO and the recovery of the usual Lifshitz-Kosevich
behavior of the Shubnikov de-Haas (SdH) effect in ZrTe$_5$ samples with a
multi-sheet FS, we show that the suppression of the SdH effect originates from
a decoupling of the electron liquid from the lattice. On crossing the so-called
Bloch-Gr\"uneisen temperature, T$_BG$, electron-phonon scattering becomes
strongly suppressed and in the absence of Umklapp scattering the electronic
liquid regains Galilean invariance. In addition, we show, using a combination
of zero-field electrical conductivity and ultrasonic-absorption measurements,
that entering this regime leads to an abrupt increase of electronic viscosity.
We study the response of generating functionals to a variation of parameters
(couplings) in equilibrium systems i.e. in quantum field theory (QFT) and
equilibrium statistical mechanics. These parameters can be either physical ones
such as coupling constants or artificial ones which are intentionally
introduced such as the renormalization scale in field theories. We first derive
general functional flow equations for the generating functional
(grand-canonical potential) $W[J]$ of the connected diagrams. Then, we obtain
functional flow equations for the one-particle irreducible ($1$PI) vertex
functional (canonical potential) $\Gamma[\phi]$ by performing the Legendre
transformation. By taking the functional derivatives of the flow equations, we
can obtain an infinite hierarchical equations for the $1$PI vertices. We also
point out that a Callan-Symanzik type equation holds among the vertices when
partition function is invariant under some changes of the parameters. After
discussing general aspects of parameter response, we apply our formalism to
several examples and reproduce the well-known functional flow equations. Our
response theory provides us a systematic and general way to obtain various
functional flow equations in equilibrium systems.
The observation of the Sagnac effect for massive material particles offers a
significant enhancement in sensitivity when compared to optical interferometers
with equal area and angular rotation velocity. As a result, there have been
suggestions to employ solid-state interferometers that rely on semiconductors
and graphene. However, in the case of monolayer graphene, its quasiparticles
exhibit a linear dispersion, thus making the Sagnac effect in graphene
comparable to that of for light. We investigate the Sagnac effect in the Dirac
materials governed by the relativistic dispersion law and find the value of the
fringe shift. The analysis reveals that optimal sensitivity is achieved in
materials featuring a reduced value of Fermi velocity. Notably, the sign of the
fringe shift depends on the nature of the charge carriers -- whether they are
electrons or holes.
$\mathrm{AuSn_4}$ is the example of an orthorhombic compound that exhibits
topological properties. Recent XRD measurements reveal an ambiguous nature of
the crystal structure, as it can be realized with either Aea2 or Ccca symmetry.
Motivated by this, we analyze the dynamical stability of the compound with
these symmetries. Interestingly, our main result indicates that
$\mathrm{AuSn_4}$ is unstable with both Aea2 and Ccca symmetries, due to the
soft modes in the phonon spectra. We find that the $\mathrm{AuSn_4}$ can be
stable with Pbcm at low temperatures using the soft mode analysis. We also show
that the theoretical electronic spectra are well reproduced, and have a good
resemblance with the experimental ARPES spectra. Our findings may be valuable
to the theoretical investigations of $\mathrm{AuSn_4}$ in future.
Antimony shows promise as a two-dimensional (2D) mono-elemental crystal,
referred to as antimonene. When exposed to ambient conditions, antimonene
layers react with oxygen, forming new crystal structures, leading significant
changes in electronic properties. These changes are influenced by the degree of
oxidation. Utilizing Density Functional Theory (DFT) calculations, stable
configurations of bilayer antimony oxide and their corresponding electronic
properties are studied. Additionally, different stacking arrangements and their
effects on the physical properties of the materials are investigated.
Furthermore, the analysis encompasses strain-free hetero-bilayers containing
both pristine and oxidized antimonene layers, aiming to understand the
interplay between these materials and their collective impact on the bilayer
properties. Our results provide insight into how the properties of
antimony-based bilayer structures can be modified by adjusting stoichiometry
and stacking configurations.
Nickel/Bismuth (Ni/Bi) bilayers have recently attracted attention due to the
occurrence of time-reversal symmetry breaking in the superconducting state.
Here, we report on the structural, magnetic and electric characterization of
thin film Ni/Bi bilayers with several Bi thicknesses. We observed the formation
of a complex layered structure depending on the Bi thickness caused by the
inter-diffusion of Bi and Ni which leads to the stabilization of NiBi$_{3}$ at
the Bi/Ni interface. The superconducting transition temperature and the
transition width are highly dependent on the Bi thickness and the layer
structure. Magnetoelectric transport measurements in perpendicular and parallel
magnetic fields were used to investigate the temperature-dependent upper
critical field within the framework of the anisotropic Ginzburg-Landau theory
and the Werthamer Helfand Hohenberg model. For thicker samples, we observed a
conventional behavior, similar to that shown by NiBi$_{3}$ bulk samples,
including a small Maki parameter ($\alpha_{M}$ = 0), no spin-orbit scattering
($\lambda_{SO}$= 0) and nearly isotropic coherence length ($\gamma$ =
$\xi_{\perp}$(0)/$\xi_{\parallel}$(0) $\approx$ 1). The values obtained for
these properties are close to those characterizing NiBi$_{3}$ single crystals.
On the other hand, in very thin samples the Maki parameter increases to about
$\alpha_{M}$ = 2.8. In addition, the coherence length becomes anisotropic
($\gamma$ = 0.32) and spin-orbit scattering ($\lambda_{SO}$= 1.2) must be taken
into account. Our results unequivocally show that the properties characterizing
the superconducting state in the Ni/Bi are strongly dependent on the sample
thickness.
The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange
interaction, which is responsible for the formation of topologically protected
spin textures in chiral magnets. Here, by measuring the dispersion relation of
the DM energy, we quantify the atomistic DMI in a model system, i.e., a Co
double layer on Ir(001). We unambiguously demonstrate the presence of a
chirality-inverted DMI, i.e., a sign change in the chirality index of DMI from
negative to positive, when comparing the interaction between nearest neighbors
to that between neighbors located at longer distances. The effect is in analogy
to the change in the character of the Heisenberg exchange interaction from,
e.g., ferromagnetic to antiferromagnetic. We show that the pattern of the
atomistic DMI in epitaxial magnetic structures can be very complex and provide
critical insights into the nature of DMI. We anticipate that the observed
effect is general and occurs in many magnetic nanostructures grown on
heavy-element metallic substrates.
Skyrmions having topologically protected field configurations with
particle-like properties play an important role in various field of science.
Our present study focus on the generation of skyrmion from spin spiral in the
magnetic multilayers of 4d-Fe/Ir(111) with 4d = Y, Zr, Nb, Mo, Ru, Rh. Here we
investigate the impact of 4d transition metals on the isotropic Heisenberg
exchanges and anti-symmetric Dzyaloshinskii-Moriya interactions originating
from the broken inversion symmetry at the interface of 4d-Fe/Ir(111)
multilayers. We find a strong exchange frustration due to the hybridization of
the Fe-3d layer with both 4d and Ir-5d layers which modifies due to band
filling effects of the 4d transition metals. We strengthen the analysis of
exchange frustration by shedding light on the orbital decomposition of
isotropic exchange interactions of Fe-3d orbitals. Our spin dynamics and Monte
Carlo simulations indicate that the magnetic ground state of 4d-Fe/Ir(111)
transition multilayers is a spin spiral in the $ab$-plane with a period of 1 to
2.5 nm generated by magnetic moments of Fe atoms and propagating along the
$a$-direction. The spiral wavelengths in Y-Fe/Ir(111) are much larger compared
to Rh-Fe/Ir(111). In order to manipulate the skyrmion phase in 4d-Fe/Ir(111),
we investigate the magnetic ground state of 4d-Fe/Ir(111) transition
multilayers with different external magnetic field. An increasing external
magnetic field of $\sim$ 12 T is responsible for deforming the spin spiral into
a isolated skyrmion which flips into skyrmion lattice phase around $\sim$ 18 T
in Rh-Fe/Ir(111). Our study predict that the stability of magnetic skyrmion
phase in Rh-Fe/Ir(111) against thermal fluctuations is upto temperature T $\leq
90$ K.
In this review, we discuss the computation of thermoelectric properties in
two-dimensional (2D) nodal-point semimetals with two bands, and show that the
expressions of the thermoelectric coefficients take different values depending
on the nature of the scattering mechanism responsible for transport. We
consider scatterings arising from short-ranged disorder potential and screened
charged impurities. In all the cases considered, an anisotropy in the band
spectrum invariably affects the thermopower quite significantly. We illustrate
this by comparing the results for a semi-Dirac semimetal with those for the
isotropic case (captured by the dispersion of a single valley of graphene). We
also consider the scenario when a magnetic field of magnitude $B$ is applied
perpendicular to the plane of the 2D semimetal. For a weak external magnetic
field, when we can ignore the formation of Landau levels, a complex dependence
of the thermopower on $B$ emerges for the anisotropic case. We also describe
the behaviour of the thermoelectric coefficients in the presence of a strong
quantizing magnetic field. Overall, the interplay of anisotropy and strengths
of the external fields provides a promising platform for achieving high
thermoelectric figure-of-merit.
We investigate the generation of an electric current from a temperature
gradient in a two-dimensional Weyl semimetal with anisotropy, in both the
presence and absence of a quantizing magnetic field. We show that the
anisotropy leads to doping dependences of thermopower and thermal
conductivities which are different from those in isotropic Dirac materials.
Additionally, we find that a quantizing magnetic field in such systems leads to
an interesting magnetic field dependence of the longitudinal thermopower,
resulting in unsaturated thermoelectric coefficients. Thus the results
presented here will serve as a guide to achieving high thermopower and a
thermoelectric figure-of-merit in graphene-based materials, as well as organic
conductors such as $\alpha$-(BEDT-TTF)$_2$I$_3$.
Recently, a class of fractal surface codes (FSCs), has been constructed on
fractal lattices with Hausdorff dimension $2+\epsilon$, which admits a
fault-tolerant non-Clifford CCZ gate. We investigate the performance of such
FSCs as fault-tolerant quantum memories. We prove that there exist decoding
strategies with non-zero thresholds for bit-flip and phase-flip errors in the
FSCs with Hausdorff dimension $2+\epsilon$. For the bit-flip errors, we adapt
the sweep decoder, developed for string-like syndromes in the regular 3D
surface code, to the FSCs by designing suitable modifications on the boundaries
of the holes in the fractal lattice. Our adaptation of the sweep decoder for
the FSCs maintains its self-correcting and single-shot nature. For the
phase-flip errors, we employ the minimum-weight-perfect-matching (MWPM) decoder
for the point-like syndromes. We report a sustainable fault-tolerant threshold
($\sim 1.7\%$) under phenomenological noise for the sweep decoder and the code
capacity threshold (lower bounded by $2.95\%$) for the MWPM decoder for a
particular FSC with Hausdorff dimension $D_H\approx2.966$. The latter can be
mapped to a lower bound of the critical point of a confinement-Higgs transition
on the fractal lattice, which is tunable via the Hausdorff dimension.
The topological properties of the flat band states of a one-electron
Hamiltonian that describes a chain of atoms with $s-p$ orbitals are explored.
This model is mapped onto a Kitaev-Creutz type model, providing a useful
framework to understand the topology through a nontrivial winding number and
the geometry introduced by the \textit{Fubini-Study (FS)} metric. This metric
allows us to distinguish between pure states of systems with the same topology
and thus provides a suitable tool for obtaining the fingerprint of flat bands.
Moreover, it provides an appealing geometrical picture for describing flat
bands as it can be associated with a local conformal transformation over
circles in a complex plane. In addition, the presented model allows us to
relate the topology with the formation of Compact Localized States (CLS) and
pseudo-Bogoliubov modes. Also, the properties of the squared Hamiltonian are
investigated in order to provide a better understanding of the localization
properties and the spectrum. The presented model is equivalent to two coupled
SSH chains under a change of basis.
Machine learning techniques have successfully been used to extract structural
information such as the crystal space group from powder X-ray diffractograms.
However, training directly on simulated diffractograms from databases such as
the ICSD is challenging due to its limited size, class-inhomogeneity, and bias
toward certain structure types. We propose an alternative approach of
generating synthetic crystals with random coordinates by using the symmetry
operations of each space group. Based on this approach, we demonstrate online
training of deep ResNet-like models on up to a few million unique on-the-fly
generated synthetic diffractograms per hour. For our chosen task of space group
classification, we achieved a test accuracy of 79.9% on unseen ICSD structure
types from most space groups. This surpasses the 56.1% accuracy of the current
state-of-the-art approach of training on ICSD crystals directly. Our results
demonstrate that synthetically generated crystals can be used to extract
structural information from ICSD powder diffractograms, which makes it possible
to apply very large state-of-the-art machine learning models in the area of
powder X-ray diffraction. We further show first steps toward applying our
methodology to experimental data, where automated XRD data analysis is crucial,
especially in high-throughput settings. While we focused on the prediction of
the space group, our approach has the potential to be extended to related tasks
in the future.
Magnetic two-dimensional (2D) semiconductors have attracted a lot of
attention because modern preparation techniques are capable of providing single
crystal films of these materials with precise control of thickness down to the
single-layer limit. It opens up a way to study rich variety of electronic and
magnetic phenomena with promising routes towards potential applications. We
have investigated the initial stages of epitaxial growth of the magnetic van
der Waals semiconductor FeBr\textsubscript{2} on a single-crystal Au(111)
substrate by means of low-temperature scanning tunneling microscopy, low-energy
electron diffraction, x-ray photoemission spectroscopy, low-energy electron
emission microscopy and x-ray photoemission electron microscopy. Magnetic
properties of the one- and two-layer thick films were measured via x-ray
absorption spectroscopy/x-ray magnetic circular dichroism. Our findings show a
striking difference in the magnetic behaviour of the single layer of
FeBr\textsubscript{2} and its bulk counterpart, which can be attributed to the
modifications in the crystal structure due to the interaction with the
substrate.
Thermodynamic irreversibility is a crucial property of living matter.
Irreversible processes maintain spatiotemporally complex structures and
functions characteristic of living systems. In high-dimensional biological
dynamics, robust and general quantification of irreversibility remains a
challenging task due to experimental noise and nonlinear interactions coupling
many degrees of freedom. Here we use deep learning to identify tractable,
low-dimensional representations of phase-field patterns in a canonical protein
signaling process -- the Rho-GTPase system -- as well as complex
Ginzburg-Landau dynamics. We show that factorizing variational autoencoder
neural networks learn informative pattern features robustly to noise. Resulting
neural-network representations reveal signatures of mesoscopic broken detailed
balance and time-reversal asymmetry in Rho-GTPase and complex Ginzburg-Landau
wave dynamics. Applying the compression-based Ziv-Merhav estimator of
irreversibility to representations, we recover irreversibility trends across
complex Ginzburg-Landau patterns varying widely in spatiotemporal frequency and
noise level. Irreversibility estimates from representations similarly
recapitulate cell-activity trends in a Rho-GTPase patterning system undergoing
metabolic inhibition. Additionally, we find that our irreversibility estimates
serve as a dynamical order parameter, distinguishing stable and chaotic
dynamics in these nonlinear systems. Our framework leverages advances in deep
learning to offer robust, model-free measurements of nonequilibrium and
nonlinear behavior in complex living processes.
The ferromagnetic Weyl semimetals, such as Co3Sn2S2, feature pairs of Weyl
points characterized by the opposite chiralities.We model this type of
semimetals by the inversion symmetry protected and the time reversal symmetry
broken Bloch Hamiltonian. It involves terms representing the tunnelling effect,
exchange field corresponding to the ferromagnetic order, chirality index of
Weyl points with related energy parameters, and the angle formed by the spin
magnetic moments and the axis perpendicular to the system-plane. While for the
in-plane spin moment order the Weyl nodes are absent at some points of the
first Brillouin zone , the bands of opposite chirality non-linearly cross each
other with band inversion at Weyl points for the spin moment order along the
perpendicular axis. The absence of linearity implies that the system is unable
to host massless Weyl fermions. We also show that, in the absence of the
exchange field, the incidence of the circularly polarized radiation leads to
the emergence of a novel state with broken time reversal symmetry.
The Kibble-Zurek mechanism (KZM) predicts that the average number of
topological defects generated upon crossing a continuous or quantum phase
transition obeys a universal scaling law with the quench time. Fluctuations in
the defect number near equilibrium are approximately of Gaussian form, in
agreement with the central limit theorem. Using large deviations theory, we
characterize the universality of fluctuations beyond the KZM and report the
exact form of the rate function in the transverse-field quantum Ising model. In
addition, we characterize the scaling of large deviations in an arbitrary
continuous phase transition, building on recent evidence establishing the
universality of the defect number distribution.
We propose a theoretical framework that explains how the mass of simple and
higher-order networks emerges from their topology and geometry. We use the
discrete topological Dirac operator to define an action for a massless
self-interacting topological Dirac field inspired by the Nambu-Jona Lasinio
model. The mass of the network is strictly speaking the mass of this
topological Dirac field defined on the network; it results from the chiral
symmetry breaking of the model and satisfies a self-consistent gap equation.
Interestingly, it is shown that the mass of a network depends on its spectral
properties, topology, and geometry. Due to the breaking of the
matter-antimatter symmetry observed for the harmonic modes of the discrete
topological Dirac operator, two possible definitions of the network mass can be
given. For both possible definitions, the mass of the network comes from a gap
equation with the difference among the two definitions encoded in the value of
the bare mass. Indeed, the bare mass can be determined either by the Betti
number $\beta_0$ or by the Betti number $\beta_1$ of the network. We provide
numerical results on the mass of different networks, including random graphs,
scale-free, and real weighted collaboration networks. We also discuss the
generalization of these results to higher-order networks, defining the mass of
simplicial complexes. The observed dependence of the mass of the considered
topological Dirac field with the topology and geometry of the network could
lead to interesting physics in the scenario in which the considered Dirac field
is coupled with a dynamical evolution of the underlying network structure.

Date of feed: Wed, 20 Sep 2023 00:30:00 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Origin of magic angles in twisted bilayer graphene: The magic ring. (arXiv:2309.10026v1 [cond-mat.mes-hall])**

Wei-Chen Wang, Feng-Wu Chen, Kuan-Sen Lin, Justin T. Hou, Ho-Chun Lin, Mei-Yin Chou

**Perturbative RG flows in AdS: an \'etude. (arXiv:2309.10031v1 [hep-th])**

Edoardo Lauria, Michael Milam, Balt C. van Rees

**Topological quantum chains protected by dipolar and other modulated symmetries. (arXiv:2309.10036v1 [cond-mat.str-el])**

Jung Hoon Han, Ethan Lake, Ho Tat Lam, Ruben Verresen, Yizhi You

**A stabilizer code model with non-invertible symmetries: Strange fractons, confinement, and non-commutative and non-Abelian fusion rules. (arXiv:2309.10037v1 [hep-th])**

Tanay Kibe, Ayan Mukhopadhyay, Pramod Padmanabhan

**Topological modes and spectral flows in inhomogeneous PT-symmetric continuous media. (arXiv:2309.10110v1 [physics.plasm-ph])**

Yichen Fu, Hong Qin

**Unconventional transport properties in systems with triply degenerate quadratic band crossings. (arXiv:2309.10198v1 [cond-mat.mes-hall])**

Zhihai Liu, Luyang Wang, Dao-Xin Yao

**Field Orientation Dependent Magnetic Phases In Weyl Semimetal Co3Sn2S2. (arXiv:2309.10221v1 [cond-mat.mtrl-sci])**

Samuel E. Pate, Bin Wang, Bing Shen, J. Samuel Jiang, Ulrich Welp, Wai-Kwong Kwok, Jing Xu, Kezhen Li, Ralu Divan, Zhi-Li Xiao

**Disorder and diffuse scattering in single-chirality (TaSe$_4$)$_2$I crystals. (arXiv:2309.10236v1 [cond-mat.str-el])**

Jacob A. Christensen, Simon Bettler, Kejian Qu, Jeffrey Huang, Soyeun Kim, Yinchuan Lu, Chengxi Zhao, Jin Chen, Matthew J. Krogstad, Toby J. Woods, Fahad Mahmood, Pinshane Y. Huang, Peter Abbamonte, Daniel P. Shoemaker

**Chiral Skyrmions Interacting with Chiral Flowers. (arXiv:2309.10338v1 [cond-mat.mes-hall])**

Xichao Zhang, Jing Xia, Oleg A. Tretiakov, Motohiko Ezawa, Guoping Zhao, Yan Zhou, Xiaoxi Liu, Masahito Mochizuki

**Krylov Complexity of Fermionic and Bosonic Gaussian States. (arXiv:2309.10382v1 [quant-ph])**

Kiran Adhikari, Adwait Rijal, Ashok Kumar Aryal, Mausam Ghimire, Rajeev Singh, Christian Deppe

**Vortex-core spectroscopy of $d$-wave cuprate high-temperature superconductors. (arXiv:2309.10446v1 [cond-mat.supr-con])**

Ivan Maggio-Aprile, Tejas Parasram Singar, Christophe Berthod, Tim Gazdić, Jens Bruér, Christoph Renner

**Anomalous Shubnikov-de Haas effect and observation of the Bloch-Gr\"uneisen temperature in the Dirac semimetal ZrTe5. (arXiv:2309.10480v1 [cond-mat.mtrl-sci])**

S. Galeski, K. Araki, O. K. Forslund, R. Wawrzynczak, H. F. Legg, P. K. Sivakumar, U. Miniotaite, F. Elson, M. Månsson, C. Witteveen, F. O. von Rohr, A.Q.R. Baron, D. Ishikawa, Q. Li, G. Gu, L. X. Zhao, W. L. Zhu, G. F. Chen, Y. Wang, S.S.P. Parkin, D. Gorbunov, S. Zherlitsyn, B. Vlaar, D. H. Nguyen, S. Paschen, P. Narang, C. Felser, J. Wosnitza, T. Meng, Y. Sassa, S. A. Hartnoll, J. Gooth

**Note on general functional flows in equilibrium systems. (arXiv:2309.10496v1 [cond-mat.stat-mech])**

Kiyoharu Kawana

**The Sagnac effect in a rotating ring with Dirac fermions. (arXiv:2309.10497v1 [cond-mat.mes-hall])**

A.Yu. Fesh, S.G. Sharapov

**Stability of AuSn$_{4}$ compound in low temperature. (arXiv:2309.10571v1 [cond-mat.mtrl-sci])**

Shivam Yadav, Sajid Sekh, Andrzej Ptok

**Electronic Properties of 2D Bilayer Antimony Oxide. (arXiv:2309.10653v1 [cond-mat.mtrl-sci])**

Stefan Wolff, Roland Gillen, Janina Maultzsch

**Ni/Bi bilayers: The effect of thickness on the superconducting properties. (arXiv:2309.10705v1 [cond-mat.supr-con])**

Gabriel Sant'ana, David Möckli, Alexandre da Cas Viegas, Paulo Pureur, Milton A. Tumelero

**Chirality-inverted Dzyaloshinskii-Moriya interaction. (arXiv:2309.10751v1 [cond-mat.mes-hall])**

Khalil Zakeri, Alberto Marmodoro, Albrecht von Faber, Sergiy Mankovsky, Hubert Ebert

**Engineering skyrmion from spin spiral in transition metal multilayers. (arXiv:2309.10752v1 [cond-mat.mtrl-sci])**

Banasree Sadhukhan

**Thermoelectric response in two-dimensional nodal-point semimetals. (arXiv:2309.10763v1 [cond-mat.mes-hall])**

Ipsita Mandal, Kush Saha

**Thermopower in an anisotropic two-dimensional Weyl semimetal. (arXiv:1811.04952v5 [cond-mat.mes-hall] UPDATED)**

Ipsita Mandal, Kush Saha

**Quantum error correction with fractal topological codes. (arXiv:2201.03568v3 [quant-ph] UPDATED)**

Arpit Dua, Tomas Jochym-O'Connor, Guanyu Zhu

**Fubini-Study metric and topological properties of flat band electronic states: the case of an atomic chain with $s-p$ orbitals. (arXiv:2303.02126v3 [cond-mat.str-el] UPDATED)**

Abdiel Espinosa-Champo, Gerardo G. Naumis

**Neural networks trained on synthetically generated crystals can extract structural information from ICSD powder X-ray diffractograms. (arXiv:2303.11699v3 [cond-mat.mtrl-sci] UPDATED)**

Henrik Schopmans, Patrick Reiser, Pascal Friederich

**Epitaxial monolayers of magnetic 2D semiconductor FeBr$_{2}$ grown on Au(111). (arXiv:2304.11972v2 [cond-mat.mtrl-sci] UPDATED)**

S. E. Hadjadj, C. González-Orellana, J. Lawrence, D. Bikaljević, M. Peña-Díaz, P. Gargiani, L. Aballe, J. Naumann, M. Á. Niño, M. Foerster, S. Ruiz-Gómez, S. Thakur, I. Kumberg, J. Taylor, J. Hayes, J. Torres, C. Luo, F. Radu, D. G. de Oteyza, W. Kuch, J. I. Pascual, C. Rogero, M. Ilyn

**Measuring irreversibility from learned representations of biological patterns. (arXiv:2305.19983v2 [cond-mat.stat-mech] UPDATED)**

Junang Li, Chih-Wei Joshua Liu, Michal Szurek, Nikta Fakhri

**On Weyl Nodes in Ferromagnetic Weyl Semimetal. (arXiv:2306.07882v3 [cond-mat.mes-hall] UPDATED)**

Udai Prakash Tyagi, Partha Goswami

**Large Deviations Beyond the Kibble-Zurek Mechanism. (arXiv:2307.02524v2 [quant-ph] UPDATED)**

Federico Balducci, Mathieu Beau, Jing Yang, Andrea Gambassi, Adolfo del Campo

**The mass of simple and higher-order networks. (arXiv:2309.07851v2 [cond-mat.dis-nn] UPDATED)**

Ginestra Bianconi

Found 13 papers in prb This paper examines the relaxation dynamics of a two-dimensional Coulomb glass lattice model with high disorder. The study aims to investigate the effects of disorder and Coulomb interactions on glassy dynamics by computing the eigenvalue distribution of the linear dynamical matrix using the mean-fi… In this paper we consider the dynamics of a chain of many coupled kicked rotors with dissipation. We map a rich phase diagram with many dynamical regimes. We focus mainly on a regime where the system shows period doubling, and forms patterns that are persistent and depend on the stroboscopic time wi… Experimental signatures of topological superconductivity have been notoriously difficult to verify, even though they are actively being researched. Here, the authors use nanowires of Cd${}_{3}$As${}_{2}$ – a Dirac semimetal – to hunt for these signatures by simultaneously looking at Josephson radiation and Shapiro patterns at different doping levels. By cross-checking the experimental results with an extensive (RCSJ) model that includes thermal noise, it is concluded that trivial supercurrent dominates and that topological supercurrent, if existent, falls below the detection limit of the setup. We extend the Mattis-Bardeen theory for the dynamical response of superconductors to include different types of Hall responses. This is possible thanks to a recent modification of the quasiclassical Usadel equation, which allows for analyzing Hall effects in disordered superconductors and including … We investigate the interplay between altermagnetic spin-splitting and nonsymmorphic symmetries using the space group No. 62 as a testbed. Studying different magnetic orders by means of first-principles calculations, we find that the altermagnetism (AM) is present in the $C$-type magnetic configurati… The Kähler-Dirac fermion, recognized as an elegant geometric approach, offers an alternative to traditional representations of relativistic fermions. Recent studies have demonstrated that symmetric mass generation (SMG) can precisely occur with two copies of Kähler-Dirac fermions across any space-ti… This work establishes clear relationships between how exceptional points of varying orders split and which parts of the system are perturbed. Additionally, two topological invariants are identified to fully characterize the various splitting behavior. These findings provide a comprehensive understanding of how exceptional points split in various non-Hermitian systems, and can help optimize the performance of sensors that rely on exceptional points. Unconventional topological quasiparticles have recently garnered significant attention in the realm of condensed matter physics. Here, based on first-principles calculations and symmetry analysis, we reveal the coexistence of multiple types of interesting unconventional topological quasiparticles in… We report on the growth of one-dimensional (1D) chains of the prochiral quinacridone (QA) molecule on ultrathin KCl films on Cu(111) in ultrahigh vacuum. Using low-temperature scanning tunneling microscopy (STM), we observe straight homochiral 1D chains of QA molecules on one (1L), two (2L), and thr… The topological magnetoelectric effect (TME) is a characteristic property of topological insulators. In this paper, we use a simplified coupled-Dirac-cone electronic structure model to theoretically evaluate the THz and far infrared Kerr and Faraday responses of thin films of ${\mathrm{MnBi}}_{2}{\m… Graphene, a material with exceptional physicochemical properties, has been synthesized on a variety of substrates. However, prior theoretical studies have suggested that carbon (C) clusters are typically less stable thermodynamically compared to individual C monomers on most transition metal substra… The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction, which is responsible for the formation of topologically protected spin textures in chiral magnets. Here, by measuring the dispersion relation of the DM energy, we quantify the atomistic DMI in a model system, i.e.,… We theoretically investigate the effects of surface acoustic waves (SAWs) on an electric-field-driven sliding motion of a one-dimensional charge density wave (CDW), which is initially pinned by impurities. By numerically analyzing an extended Fukuyama-Lee-Rice model, we show that a mechanical vibrat…

Date of feed: Wed, 20 Sep 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]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Effect of screening on the relaxation dynamics in a Coulomb glass**

Preeti Bhandari, Vikas Malik, and Moshe Schechter

Author(s): Preeti Bhandari, Vikas Malik, and Moshe Schechter

[Phys. Rev. B 108, 094208] Published Tue Sep 19, 2023

**Spatiotemporally ordered patterns in a chain of coupled dissipative kicked rotors**

Angelo Russomanno

Author(s): Angelo Russomanno

[Phys. Rev. B 108, 094305] Published Tue Sep 19, 2023

**ac Josephson effect in a gate-tunable ${\mathrm{Cd}}_{3}{\mathrm{As}}_{2}$ nanowire superconducting weak link**

R. Haller, M. Osterwalder, G. Fülöp, J. Ridderbos, M. Jung, and C. Schönenberger

Author(s): R. Haller, M. Osterwalder, G. Fülöp, J. Ridderbos, M. Jung, and C. Schönenberger

[Phys. Rev. B 108, 094514] Published Tue Sep 19, 2023

**Dynamical Hall responses of disordered superconductors**

Alberto Hijano, Sakineh Vosoughi-nia, F. Sebastián Bergeret, Pauli Virtanen, and Tero T. Heikkilä

Author(s): Alberto Hijano, Sakineh Vosoughi-nia, F. Sebastián Bergeret, Pauli Virtanen, and Tero T. Heikkilä

[Phys. Rev. B 108, 104506] Published Tue Sep 19, 2023

**Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings**

Amar Fakhredine, Raghottam M. Sattigeri, Giuseppe Cuono, and Carmine Autieri

Author(s): Amar Fakhredine, Raghottam M. Sattigeri, Giuseppe Cuono, and Carmine Autieri

[Phys. Rev. B 108, 115138] Published Tue Sep 19, 2023

**Symmetric mass generation of Kähler-Dirac fermions from the perspective of symmetry-protected topological phases**

Yuxuan Guo and Yi-Zhuang You

Author(s): Yuxuan Guo and Yi-Zhuang You

[Phys. Rev. B 108, 115139] Published Tue Sep 19, 2023

**Experimental demonstration of splitting rules for exceptional points and their topological characterization**

Yi-Xin Xiao, Jing Hu, Zhao-Qing Zhang, and C. T. Chan

Author(s): Yi-Xin Xiao, Jing Hu, Zhao-Qing Zhang, and C. T. Chan

[Phys. Rev. B 108, 115427] Published Tue Sep 19, 2023

**Multiple types of unconventional quasiparticles in the chiral crystal ${\mathrm{CsBe}}_{2}{\mathrm{F}}_{5}$**

Xin-Yue Kang, Jin-Yang Li, and Si Li

Author(s): Xin-Yue Kang, Jin-Yang Li, and Si Li

[Phys. Rev. B 108, 125127] Published Tue Sep 19, 2023

**Hydrogen-bonded one-dimensional molecular chains on ultrathin insulating films: Quinacridone on KCl/Cu(111)**

Rémi Bretel, Séverine Le Moal, Hamid Oughaddou, and Eric Le Moal

Author(s): Rémi Bretel, Séverine Le Moal, Hamid Oughaddou, and Eric Le Moal

[Phys. Rev. B 108, 125423] Published Tue Sep 19, 2023

**Kerr, Faraday, and magnetoelectric effects in ${\mathrm{MnBi}}_{2}{\mathrm{Te}}_{4}$ thin films**

Chao Lei and Allan H. MacDonald

Author(s): Chao Lei and Allan H. MacDonald

[Phys. Rev. B 108, 125424] Published Tue Sep 19, 2023

**Self-surfactant effect in graphene growth on Pt(111)**

Xingxing Dong, Changchun He, Chao He, Xiaowei Liang, Shaogang Xu, and Hu Xu

Author(s): Xingxing Dong, Changchun He, Chao He, Xiaowei Liang, Shaogang Xu, and Hu Xu

[Phys. Rev. B 108, 125425] Published Tue Sep 19, 2023

**Chirality-inverted Dzyaloshinskii-Moriya interaction**

Khalil Zakeri, Alberto Marmodoro, Albrecht von Faber, Sergiy Mankovsky, and Hubert Ebert

Author(s): Khalil Zakeri, Alberto Marmodoro, Albrecht von Faber, Sergiy Mankovsky, and Hubert Ebert

[Phys. Rev. B 108, L100403] Published Tue Sep 19, 2023

**Fractal and subharmonic responses driven by surface acoustic waves during charge density wave sliding**

Yu Funami and Kazushi Aoyama

Author(s): Yu Funami and Kazushi Aoyama

[Phys. Rev. B 108, L100508] Published Tue Sep 19, 2023

Found 1 papers in prl We report a deterministic and exact protocol to reverse any unknown qubit-unitary operation, which simulates the time inversion of a closed qubit system. To avoid known no-go results on universal deterministic exact unitary inversion, we consider the most general class of protocols transforming unkn…

Date of feed: Wed, 20 Sep 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]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Reversing Unknown Qubit-Unitary Operation, Deterministically and Exactly**

Satoshi Yoshida, Akihito Soeda, and Mio Murao

Author(s): Satoshi Yoshida, Akihito Soeda, and Mio Murao

[Phys. Rev. Lett. 131, 120602] Published Tue Sep 19, 2023

Found 1 papers in nano-lett

Date of feed: Tue, 19 Sep 2023 13:07:13 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]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **[ASAP] Increased Mobility and Reduced Hysteresis of MoS2 Field-Effect Transistors via Direct Surface Precipitation of CsPbBr3-Nanoclusters for Charge Transfer Doping**

Yae Zy Kang, Gwang Hwi An, Min-Gi Jeon, So Jeong Shin, Su Jin Kim, Min Choi, Jae Baek Lee, Tae Yeon Kim, Ikhwan Nur Rahman, Hyun Young Seo, Seyoung Oh, Byungjin Cho, Jihoon Choi, and Hyun Seok LeeNano LettersDOI: 10.1021/acs.nanolett.3c02293

Found 1 papers in sci-rep Scientific Reports, Published online: 19 September 2023; doi:10.1038/s41598-023-42767-x**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)

Found 2 papers in nat-comm **Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Dynamically tuning friction at the graphene interface using the field effect**

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**Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa4**

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