Found 31 papers in cond-mat Quantum geometry plays a pivotal role in the second-order response of $\cal
PT$-symmetric antiferromagnets. Here we study the nonlinear response of 2D
altermagnets protected by $C_n\cal T$ symmetry and show that their leading
nonlinear response is third-order. Furthermore, we show that the contributions
from the quantum metric and Berry curvature enter separately: the longitudinal
response for all planar altermagnets \emph{only} has a contribution from the
quantum metric quadrupole (QMQ), while transverse responses in general have
contributions from both the Berry curvature quadrupole (BCQ) and QMQ. We show
that for the well-known example of $d$-wave altermagnets the Hall response is
dominated by the BCQ. Both longitudinal and transverse responses are strongly
dependent on the crystalline anisotropy. While altermagnets are strictly
defined in the limit of vanishing SOC, real altermagnets exhibit weak SOC,
which is essential to observe this response. Specifically, SOC gaps the
spin-group protected nodal line, generating a response peak that is sharpest
when SOC is weak. Two Dirac nodes also contribute a divergence to the nonlinear
response, whose scaling changes as a function of SOC. Finally, we apply our
results to thin films of the 3D altermagnet RuO$_2$. Our work uncovers distinct
features of altermagnets in nonlinear transport, providing experimental
signatures as well as a guide to disentangling the different components of
their quantum geometry.
Motivated by the recent experimental breakthrough on the observation of the
fractional quantum anomalous Hall (FQAH) effects in semiconductor and graphene
moir\'{e} materials, we explore the rich physics associated with the
intertwinement between FQAH effect and the charge density wave (CDW) order that
spontaneously breaks the translation symmetry. We refer to a state with
coexisting FQAH effect and CDW order as "FQAH-crystal". We show that the
interplay between FQAH effect and CDW can lead to a rich phase diagram
including multiple topological phases and topological quantum phase transitions
at the same moir\'e filling. In particular, we demonstrate the possibility of
direct quantum phase transitions from a FQAH-crystal with Hall conductivity
$\sigma_H = - 2/3$ to a trivial CDW insulator with $\sigma_H = 0$, and more
interestingly, to a QAH-crystal with $\sigma_H= -1$.
The application of topology, a branch of mathematics, to the study of
electronic states in crystalline materials has had a revolutionary impact on
the field of condensed matter physics. For example, the development of
topological band theory has delivered new approaches and tools to characterize
the electronic structure of materials, resulting in the discovery of new phases
of matter with exotic properties. In the framework of topological band theory,
the crossings between energy levels of electrons are characterized by
topological invariants, which predict the presence of topological boundary
states. Given the frequency of energy level crossings on the potential energy
surface in molecules, the applicability of these concepts to molecular systems
could be of great interest for our understanding of reaction dynamics. However,
challenges arise due to differing quantum mechanical descriptions of solids and
molecules. Out work aims to bridge the gap between topological band theory and
molecular chemistry. We propose that the Euler Class, a topological invariant,
can be used to categorize and analyse the distribution of nonadiabatic
couplings on the potential energy surface. To exemplify this connection, we
introduce a model system with two distinct regimes that are characterized by
different values of the Euler Class, yet identical potential energy surfaces.
Contrary to expectations set by the Born-Oppenheimer approximation, we propose
that these two regimes don't exhibit identical dynamics, due to a qualitatively
distinct distribution of nonadiabatic couplings.
Emerging quasi-particles with Dirac dispersion in condensed matter physics
are analogous to their cousins in high-energy physics in that both of them can
be described by the Dirac equation for relativistic electrons. Recently, these
Dirac fermions have been widely found in electronic systems, such as graphene
and topological insulators. At the conceptual level, since the charge is not a
prerequisite for Dirac fermions, the emergence of Dirac fermions without charge
degree of freedom has been theoretically predicted to be realized in Dirac
quantum spin liquids. In such case, the Dirac quasiparticles are charge-neutral
and carry a spin of 1/2, known as spinons. Despite of theoretical aspirations,
spectra evidence of Dirac spinons remains elusive. Here we show that the spin
excitations of a kagome antiferromagnet,
YCu$_3$(OD)$_6$Br$_2$[Br$_{x}$(OD)$_{1-x}$], are conical with a spin continuum
inside, which are consistent with the convolution of two Dirac spinons. The
spinon velocity obtained from the spin excitations also quantitatively
reproduces the low-temperature specific heat of the sample. Interestingly, the
locations of the conical spin excitations differ from those calculated by the
nearest neighbor Heisenberg model, suggesting an unexpected origin of the Dirac
spinons. Our results thus provide strong spectra evidence for the Dirac
quantum-spin-liquid state emerging in this kagome-lattice antiferromagnet.
We present a prediction of chiral topological metals with several classes of
unconventional quasiparticle fermions in a family of SrGePt-type materials in
terms of first-principles calculations. In these materials, fourfold spin-3/2
Rarita-Schwinger-Weyl (RSW) fermion, sixfold excitation, and Weyl fermions
coexist around the Fermi level as spin-orbit coupling is considered, and the
Chern number for the first two kinds of fermions is the maximal value four. We
found that large Fermi arcs from spin-3/2 RSW fermion emerge on the
(010)-surface, spanning the whole surface Brillouin zone. Moreover, there exist
Fermi arcs originating from Weyl points, which further overlap with trivial
bulk bands. In addition, we revealed that the large spin Hall conductivity can
be obtained, which attributed to the remarkable spin Berry curvature around the
degenerate nodes and band-splitting induced by spin-orbit coupling. Our
findings indicate that the SrGePt family of compounds provide an excellent
platform for studying on topological electronic states and the intrinsic spin
Hall effect.
Realizing topological semimetal states with novel emergent fermions in
magnetic materials is a focus of current research. Based on first-principle
calculations and symmetry analysis, we reveal interesting magnetic emergent
fermions in an existing material MnB2. In the temperature range from 157 K to
760 K, MnB2 is a collinear antiferromagnet. We find the coexistence of
eightfold nodal points and nodal net close to the Fermi level, which are
protected by the spin group in the absence of spin-orbit coupling. Depending on
the Neel vector orientation, consideration of spin-orbit coupling will either
open small gaps at these nodal features, or transform them into magnetic linear
and quadratic Dirac points and nodal rings. Below 157 K, MnB2 acquires weak
ferromagnetism due to spin tilting. We predict that this transition is
accompanied by a drastic change in anomalous Hall response, from zero above 157
K to 200 $\Omega\cdot \text{cm}^{-1}$ below 157 K.
Reservoir computing has been considered as a promising intelligent computing
paradigm for effectively processing complex temporal information. Exploiting
tunable and reproducible dynamics in the single electronic device have been
desired to implement the reservoir and the readout layer of reservoir computing
system. Two-dimensional moire material, with an artificial lattice constant
many times larger than the atomic length scale, is one type of most studied
artificial quantum materials in community of material science and
condensed-matter physics over the past years. These materials are featured with
gate-tunable periodic potential and electronic correlation, thus varying the
electric field allows the electrons in the moire potential per unit cell to
exhibit distinct and reproducible dynamics, showing great promise in robust
reservoir computing. Here, we report that a moire synaptic transistor can be
used to implement the reservoir computing system with a homogeneous
reservoir-readout architecture. The synaptic transistor is fabricated based on
a h-BN/bilayer graphene/h-BN moire heterostructure, exhibiting
ferroelectricity-like hysteretic gate voltage dependence of resistance. Varying
the magnitude of the gate voltage enables the moire transistor to be switched
between long-term memory and short-term memory with nonlinear dynamics. By
employing the short- and long-term memory as the reservoir nodes and weights of
the readout layer, respectively, we construct a full-moire physical neural
network and demonstrate that the classification accuracy of 90.8% can be
achieved for the MNIST handwritten digit database. Our work would pave the way
towards the development of neuromorphic computing based on the moire materials.
We study a minimal model of two non-identical noise-activated oscillators
that interact with each other through a dissipative coupling. We find that the
system exhibits a rich variety of dynamical behaviors, including a novel
phase-locking phenomenon that we term topological phase locking (TPL). TPL is
characterized by the emergence of a band of periodic orbits that form a torus
knot in phase space, along which the two oscillators advance in rational
multiples of each other, which coexists with the basin of attraction of the
stable fixed point. We show that TPL arises as a result of a complex hierarchy
of global bifurcations. Even if the system remains noise-activated, the
existence of the band of periodic orbits enables effectively deterministic
dynamics, resulting in a greatly enhanced speed of the oscillators. Our results
have implications for understanding the dynamics of a wide range of systems,
from biological enzymes and molecular motors to engineered electronic, optical,
or mechanical oscillators.
Quadratic nodal point (QNP) in two dimensions has so far been reported only
in nonmagnetic materials and in the absence of spin-orbit coupling. Here, by
first-principles calculations and symmetry analysis, we predict stable QNP near
Fermi level in a two-dimensional kagome metal-organic framework material,
Cr$_3$(HAB)$_2$, which features noncollinear antiferromagnetic ordering and
sizable spin-orbit coupling. Effective kp and lattice models are constructed to
capture such magnetic QNPs. Besides QNP, we find Cr$_3$(HAB)$_2$ also hosts six
magnetic linear nodal points protected by mirror as well as $C_{2z}T$ symmetry.
Properties associated to these nodal points, such as topological edge states
and quantized optical absorbance, are discussed.
A new superstructure of layered pristine LiNiO2 (LNO) was obtained optimizing
a large supercell of the 166 space group, the one observed experimentally by
XRD, and relaxing both cell parameters and internal positions. The crystal
structure shows size and charge disproportionation of the NiO6 octahedra
instead of the Jahn-Teller distortion. The decrease of the internal energy
obtained with the structural optimization of the supercell relative to the same
structure in its primitive unit cell is much larger than the one obtained by
relaxing similarly dimensioned supercells of monoclinic symmetry relative to
their primitive unit cells, although the monoclinic phase remains more stable.
The Ni-O bond length distribution of the new structure agree well with the
experiments. Our results show that the choice of the simulation cell is
important for determining the energetics of this class of oxide materials,
proposed for cathodes in lithium ion batteries (LIBs). We used this new
structure as a template for the study of the structural and electronic changes
induced by the delithiation and Mn for Ni cation substitution, originating the
solid solutions LiNiyMn(1-y)O2 (LNMO). Our results, surprisingly, agree well
with the existing experiments and explain observed trends better than previous
studies.
We demonstrate multiple flat bands and compact localized states (CLSs) in a
photonic super-Kagome lattice (SKL) that exhibits coexistence of singular and
nonsingular flat bands within its unique band structure. Specifically, we find
that the upper two flat bands of an SKL are singular - characterized by
singularities due to band touching with their neighboring dispersive bands at
the Brillouin zone center. Conversely, the lower three degenerate flat bands
are nonsingular, and remain spectrally isolated from other dispersive bands.
The existence of such two distinct types of flat bands is experimentally
demonstrated by observing stable evolution of the CLSs with various geometrical
shapes in a laser-written SKL. We also discuss the classification of the flat
bands in momentum space, using band-touching singularities of the Bloch wave
functions. Furthermore, we validate this classification in real space based on
unit cell occupancy of the CLSs in a single SKL plaquette. These results may
provide insights for the study of flatband transport, dynamics, and nontrivial
topological phenomena in other relevant systems.
Despite the fundamental importance of solid-solid transformations in many
technologies, the microscopic mechanisms remain poorly understood. Here, we
explore the atomistic mechanisms at the migrating interface during solid-solid
phase transformations between the topologically closed-packed A15 and
body-centred cubic phase in tungsten. The high energy barriers and slow
dynamics associated with this transformation require the application of
enhanced molecular sampling approaches. To this end, we performed metadynamics
simulations in combination with a path collective variable derived from a
machine learning classification of local structural environments, which allows
the system to freely sample the complex interface structure. A disordered
region of varying width forming at the migrating interface is identified as a
key physical descriptor of the transformation mechanisms, facilitating the
atomic shuffling and rearrangement necessary for structural transformations.
Furthermore, this can directly be linked to the differences in interface
mobility for distinct orientation relationships as well as the formation of
interfacial ledges during the migration along low-mobility directions.
The extremely high pseudo-magnetic field emerging in strained graphene
suggests that an oscillating nano-deformation will induce a very high current
even without electric bias. In this paper, we demonstrate the sub-terahertz
(THz) dynamics of a valley-current and the corresponding charge pumping with a
periodically excited nano-bubble. We discuss the amplitude of the
pseudo-electric field and investigate the dependence of the pumped valley
current on the different parameters of the system. Finally, we report the
signature of extra-harmonics generation in the valley current that might lead
to potential modern devices development operating in the nonlinear regime
Kelvin probe force microscopy (KPFM) has been employed to probe charge
carriers in a graphene/hexagonal boron nitride (hBN) heterostructure [Nano
Lett, 21, 5013 (2021)]. We propose an approach for operating valley filtering
based on the KPFM-induced potential $U_0$ instead of using external or induced
pseudo-magnetic fields in strained graphene. Employing a tight-binding model,
we investigate the parameters and rules leading to valley filtering in the
presence of a graphene quantum dot (GQD) created by the KPFM tip. This model
leads to a resolution of different transport channels in reciprocal space,
where the electron transmission probability at each Dirac cone ($K_1$= -K and
$K_2$ = +K) is evaluated separately. The results show that U0 and the Fermi
energy $E_F$ control (or invert) the valley polarization, if electrons are
allowed to flow through a given valley. The resulting valley filtering is
allowed only if the signs of $E_F$ and $U_0$ are the same. If they are
different, the valley filtering is destroyed and might occur only at some
resonant states affected by $U_0$. Additionally, there are independent valley
modes characterizing the conductance oscillations near the vicinity of the
resonances, whose strength increases with $U_0$ and are similar to those
occurring in resonant tunneling in quantum antidots and to the Fabry-Perot
oscillations. Using KPFM, to probe the charge carriers, and graphene-based
structures to control valley transport, provides an efficient way for attaining
valley filtering without involving external or pseudo-magnetic fields as in
previous proposals.
The Hatano-Nelson and the non-Hermitian Su-Schrieffer-Heeger model are
paradigmatic examples of non-Hermitian systems that host non-trivial boundary
phenomena. In this work, we use recently developed graph-theoretical tools to
design systems whose isospectral reduction -- akin to an effective Hamiltonian
-- has the form of either of these two models. In the reduced version, the
couplings and on-site potentials become energy-dependent. We show that this
leads to interesting phenomena such as an energy-dependent non-Hermitian skin
effect, where eigenstates can simultaneously localize on either ends of the
systems, with different localization lengths. Moreover, we predict the
existence of various topological edge states, pinned at non-zero energies, with
different exponential envelopes, depending on their energy. Overall, our work
sheds new light on the nature of topological phases and the non-Hermitian skin
effect in one-dimensional systems.
We study the effects of interband pairing in two-band s-wave and d-wave
superconductors with D4h symmetry in both time-reversal invariant as well as
time-reversal symmetry breaking states. The presence of interband pairing
qualitatively changes the nodal structure of the superconductor: nodes can
(dis)appear, merge, and leave high-symmetry locations when interband pairing is
tuned. Furthermore, in the d-wave case, we find that also the boundary modes
change qualitatively when interband pairing increases: flat zero-energy Andreev
bound states gap out and transition to helical edge states.
The high-pressure compaction of three dimensional granular packings is
simulated using a bonded particle model (BPM) to capture linear elastic
deformation. In the model, grains are represented by a collection of point
particles connected by bonds. A simple multibody interaction is introduced to
control Poisson's ratio and the arrangement of particles on the surface of a
grain is varied to model both high- and low-frictional grains. At low
pressures, the growth in packing fraction and coordination number follow the
expected behavior near jamming and exhibit friction dependence. As the pressure
increases, deviations from the low-pressure power-law scaling emerge after the
packing fraction grows by approximately 0.1 and results from simulations with
different friction coefficients converge. These results are compared to
predictions from traditional discrete element method simulations which,
depending on the definition of packing fraction and coordination number, may
only differ by a factor of two. As grains deform under compaction, the average
volumetric strain and asphericity, a measure of the change in the shape of
grains, are found to grow as power laws and depend heavily on the Poisson's
ratio of the constituent solid. Larger Poisson's ratios are associated with
less volumetric strain and more asphericity and the apparent power-law exponent
of the asphericity may vary. The elastic properties of the packed grains are
also calculated as a function of packing fraction. In particular, we find the
Poisson's ratio near jamming is 1/2 but decreases to 1/4 before rising again as
systems densify.
Partial measurements of biochemical reaction networks are ubiquitous and
limit our ability to reconstruct the topology of the reaction network and the
strength of the interactions amongst both the observed and the unobserved
molecular species. Here, we show how we can utilize noisy time series of such
partially observed networks to determine which species of the observed part
form its boundary, i.e. have significant interactions with the unobserved part.
This opens a route to reliable network reconstruction. The method exploits the
memory terms arising from projecting the dynamics of the entire network onto
the observed subnetwork. We apply it to the dynamics of the Epidermal Growth
Factor Receptor (EGFR) network and show that it works even for substantial
noise levels.
We report on a ballistic and fully tunable Josephson junction system
consisting of two parallel ribbons of graphene in contact with superconducting
MoRe. By electrostatic gating of the two individual graphene ribbons we gain
control over the real space distribution of the superconducting current
density, which can be continuously tuned between both ribbons. We extract the
respective gate dependent spatial distributions of the real space current
density by employing Fourier- and Hilbert transformations of the magnetic field
induced modulation of the critical current. This approach is fast and does not
rely on a symmetric current profile. It is therefore a universally applicable
tool, potentially useful for carefully adjusting Josephson junctions.
We study two-dimensional noble metal chalcogenides, with composition {Cu, Ag,
Au}2{S, Se, Te}, crystallizing in a snub-square lattice. This is a semi-regular
two-dimensional tesselation formed by triangles and squares that exhibits
geometrical frustration. We use for comparison a square lattice, from which the
snub-square tiling can be derived by a simple rotation of the squares. The
mono-layer snub-square chalcogenides are very close to thermodynamic stability,
with the most stable system (Ag2Se) a mere 7 meV/atom above the convex hull of
stability. All compounds studied in the square and snub-square lattice are
semiconductors, with band gaps ranging from 0.1 to more than 2.5 eV. Excitonic
effects are strong, with an exciton binding energy of around 0.3 eV. We propose
the Cu (001) surface as a possible substrate to synthesize Cu2Se, although many
other metal and semiconducting surfaces can be found with very good lattice
matching.
Two-dimensional materials with Rashba split bands near the Fermi level are
key to developing upcoming next-generation spintronics. They enable generating,
detecting, and manipulating spin currents without an external magnetic field.
Here, we propose BiAs as a novel layered semiconductor with large Rashba
splitting in bulk and monolayer forms. Using first-principles calculations, we
determined the lowest energy structure of BiAs and its basic electronic
properties. Bulk BiAs has a layered crystal structure with two atoms in a
rhombohedral primitive cell, similar to the parent Bi and As elemental phases.
It is a semiconductor with a narrow and indirect band gap. The spin-orbit
coupling leads to Rashba-Dresselhaus spin splitting and characteristic spin
texture around the L-point in the Brillouin zone of the hexagonal conventional
unit cell, with Rashba energy and Rashba coupling constant for valence
(conduction) band of $E_R$= 137 meV (93 meV) and $\alpha_R$= 6.05 eV\AA~(4.6
eV{\AA}). In monolayer form (i.e., composed of a BiAs bilayer), BiAs has a much
larger and direct band gap at $\Gamma$, with a circular spin texture
characteristic of a pure Rashba effect. The Rashba energy $E_R$= 18 meV and
Rashba coupling constant $\alpha_R$= 1.67 eV{\AA} of monolayer BiAs are quite
large compared to other known 2D materials, and these values are shown to
increase under tensile biaxial strain.
Non-reciprocal electronic transport in a material occurs if both time
reversal and inversion symmetries are broken. The superconducting diode effect
(SDE) is an exotic manifestation of this type of behavior where the critical
current for positive and negative currents are mismatched, as recently observed
in some non-centrosymmetric superconductors with a magnetic field. Here, we
demonstrate a SDE in non-magnetic Nb/Ru/Sr$_2$RuO$_4$ Josephson junctions
without applying an external magnetic field. The cooling history dependence of
the SDE suggests that time-reversal symmetry is intrinsically broken by the
superconducting phase of Sr$_2$RuO$_4$. Applied magnetic fields modify the SDE
dynamically by randomly changing the sign of the non-reciprocity. We propose a
model for such a topological junction with a conventional superconductor
surrounded by a chiral superconductor with broken time reversal symmetry.
Topological defects play a central role in the physics of many materials,
including magnets, superconductors and liquid crystals. In active fluids,
defects become autonomous particles that spontaneously propel from internal
active stresses and drive chaotic flows stirring the fluid. The intimate
connection between defect textures and active flow suggests that properties of
active materials can be engineered by controlling defects, but design
principles for their spatiotemporal control remain elusive. Here we provide a
symmetry-based additive strategy for using elementary activity patterns, as
active topological tweezers, to create, move and braid such defects. By
combining theory and simulations, we demonstrate how, at the collective level,
spatial activity gradients act like electric fields which, when strong enough,
induce an inverted topological polarization of defects, akin to an exotic
negative susceptibility dielectric. We harness this feature in a dynamic
setting to collectively pattern and transport interacting active defects. Our
work establishes an additive framework to sculpt flows and manipulate active
defects in both space and time, paving the way to design programmable active
and living materials for transport, memory and logic.
First-principles calculations of phonons are often based on the adiabatic
approximation and on Brillouin-zone samplings that might not always be
sufficient to capture the subtleties of Kohn anomalies. These shortcomings can
be addressed through corrections to the phonon self-energy arising from the
low-energy electrons. The exact self-energy involves a product of a bare and a
screened electron-phonon vertex [Rev. Mod. Phys. 89, 015003 (2017)]; still,
calculations often employ two adiabatically screened vertices, which have been
proposed as a reliable approximation for self-energy differences [Phys. Rev. B
82, 165111 (2010)]. We assess the accuracy of both approaches in estimating the
phonon spectral functions of model Hamiltonians and the adiabatic
low-temperature phonon dispersions of monolayer TaS$_2$ and doped MoS$_2$. We
find that the approximate method yields excellent corrections at low
computational cost, due to its designed error cancellation to first order,
while using a bare vertex could in principle improve these results but is
challenging in practice. We offer an alternative strategy based on downfolding
to partially screened phonons and interactions [Phys. Rev. B 92, 245108
(2015)]. This is a natural scheme to include electron-electron interactions and
tackle phonons in strongly correlated materials and the frequency dependence of
the electron-phonon vertex.
Recent experimental progress has established the twisted bilayer transition
metal dichalcogenide (TMD) as a highly tunable platform for studying many-body
physics. Particularly, the homobilayer TMDs under displacement field are
believed to be described by a generalized triangular-lattice Hubbard model with
a spin-dependent hopping phase $\theta$. To explore the effects of $\theta$ on
the system, we perform density matrix renormalization group calculations for
the relevant triangular lattice t-J model. By changing $\theta$ at small hole
doping, we obtain a region of quasi-long-range superconducting order coexisting
with charge and spin density wave within $0<\theta<\pi/3$. The
superconductivity is composed of a dominant spin singlet $d$-wave and a
subdominant triplet $p$-wave pairing. Intriguingly, the $S_z=\pm 1$ triplet
pairing components feature pair density waves. In addition, we find a region of
triplet superconductivity coexisting with charge density wave and
ferromagnetism within $\pi/3<\theta<2\pi/3$, which is related to the former
phase at smaller $\theta$ by a combined operation of spin-flip and gauge
transformation. Our findings provide insights and directions for experimental
search for exotic superconductivity in twisted TMD systems.
Simulations of lattice gauge theories with tensor networks and quantum
computing have so far mainly focused on staggered fermions. In this paper, we
use matrix product states to study Wilson fermions in the Hamiltonian
formulation and present a novel method to determine the additive mass
renormalization. Focusing on the single-flavor Schwinger model as a benchmark
model, we investigate the regime of a nonvanishing topological $\theta$-term,
which is inaccessible to conventional Monte Carlo methods. We systematically
explore the dependence of the mass shift on the volume, the lattice spacing,
the $\theta$-parameter, and the Wilson parameter. This allows us to follow
lines of constant renormalized mass, and therefore to substantially improve the
continuum extrapolation of the mass gap and the electric field density. For
small values of the mass, our continuum results agree with the theoretical
prediction from mass perturbation theory. Going beyond Wilson fermions, our
technique can also be applied to staggered fermions, and we demonstrate that
the results of our approach agree with a recent theoretical prediction for the
mass shift at sufficiently large volumes.
We consider a baby--Skyrme model with Dzyaloshinskii--Moriya interaction
(DMI) and two types of potential terms. The model has a close connection with
the vacuum functional of fermions coupled with $O(3)$ nonlinear $\bm{n}$-fields
and with a constant $SU(2)$ gauge background. The energy functional is derived
from the heat-kernel expansion for the fermion determinant. The model possesses
normal skyrmions with topological charge $Q = 1$. The restricted version of the
model also includes both the weak-compacton case (at the boundary, not
continuously differentiable) and genuine-compacton case (continuously
differentiable). The model consists of only the Skyrme term, and the DMI
provides soliton solutions that are known as \textit{skyrmions without any
potential}. The BPS equation in the supersymmetric soliton models implies that
the impurity coupling is closely related to the DMI. Therefore, the effect of
an exponentially localized DMI is also studied in the present model.
Quantum fluctuation in frustrated magnets and quantum criticality at the
transition between different quantum phases of matter are two thrilling
subjects in condensed matter physics. Here we demonstrate the nontrivial
interplay between them in the spin-1/2 coupled two-leg ladder antiferromagnet
C9H18N2CuBr4 (DLCB for short). Employing high-resolution neutron spectroscopy,
we unambiguously identify a weakly first-order hydrostatic pressure-driven
quantum phase transition, which arises from fluctuations enhanced by the
frustrating interlayer coupling. An exotic pressure-induced quantum disordered
state is evidenced by the broad spectral linewidth observed near the phase
transition. We also find that the temperature dependence of the gapped
transverse excitations in the Neel-ordered phase at ambient pressure cannot be
described by the conventional S=1 magnons, i.e., the spin wave quanta,
associated with explicit symmetry breaking. Instead, the thermal
renormalization of the gap energies at ambient pressure shows a remarkable
agreement with the theoretical calculation for the three-dimensional (3D) O(3)
nonlinear-sigma model, which indicates that the ground state at ambient
pressure is best described as a disordered singlet with a spin gap.
Accordingly, the origin of the spin gap in DLCB is not owing to the spin
anisotropy and the 3D magnetic order ought to emerge in an unconventional way.
Haldane's conjecture on spin-1 chains is proposed to explain the opening of the
spin gap in DLCB and the analysis of the free energy supports that the magnetic
order of DLCB can arise exclusively from thermal fluctuations by
order-by-disorder. Our results indicate the presence of a symmetry-protected
topological phase at ambient pressure in this material.
We will study a class of system composed of interacting unicyclic machines
placed in contact with a hot and cold thermal baths subjected to a
non-conservative driving worksource. Despite their simplicity, these models
showcase an intricate array of phenomena, including pump and heat engine
regimes as well as a discontinuous phase transition. We will look at three
distinctive topologies: a minimal and beyond minimal (homogeneous and
heterogeneous interaction structures). The former case is represented by stark
different networks ("all-to-all" interactions and only a central interacting to
its neighbors) and present exact solutions, whereas homogeneous and
heterogeneous structures have been analyzed by numerical simulations. We find
that the topology plays a major role on the thermodynamic performance for
smaller values of individual energies, in part due to the presence of
first-order phase-transitions.Contrariwise, the topology becomes less important
as individual energies increases and results are well-described by a system
with all-to-all interactions.
It is show that one can derive a novel BPS bound for the gauged
Non-Linear-Sigma-Model (NLSM) Maxwell theory in (3+1) dimensions which can
actually be saturated. Such novel bound is constructed using Hamilton-Jacobi
equation from classical mechanics. The configurations saturating the bound
represent Hadronic layers possessing both Baryonic charge and magnetic flux.
However, unlike what happens in the more common situations, the topological
charge which appears naturally in the BPS bound is a non-linear function of the
Baryonic charge. This BPS bound can be saturated when the surface area of the
layer is quantized. The far-reaching implications of these results are
discussed. In particular, we determine the exact relation between the magnetic
flux and the Baryonic charge as well as the critical value of the Baryonic
chemical potential beyond which these configurations become thermodynamically
unstable.
Metal-organic frameworks (MOFs) are of immense interest in applications such
as gas storage and carbon capture due to their exceptional porosity and tunable
chemistry. Their modular nature has enabled the use of template-based methods
to generate hypothetical MOFs by combining molecular building blocks in
accordance with known network topologies. However, the ability of these methods
to identify top-performing MOFs is often hindered by the limited diversity of
the resulting chemical space. In this work, we propose MOFDiff: a
coarse-grained (CG) diffusion model that generates CG MOF structures through a
denoising diffusion process over the coordinates and identities of the building
blocks. The all-atom MOF structure is then determined through a novel assembly
algorithm. Equivariant graph neural networks are used for the diffusion model
to respect the permutational and roto-translational symmetries. We
comprehensively evaluate our model's capability to generate valid and novel MOF
structures and its effectiveness in designing outstanding MOF materials for
carbon capture applications with molecular simulations.

Date of feed: Thu, 19 Oct 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) **Quantum geometry induced nonlinear transport in altermagnets. (arXiv:2310.11489v1 [cond-mat.mes-hall])**

Yuan Fang, Jennifer Cano, Sayed Ali Akbar Ghorashi

**Intertwined fractional quantum anomalous Hall states and charge density waves. (arXiv:2310.11632v1 [cond-mat.str-el])**

Xue-Yang Song, Chao-Ming Jian, Liang Fu, Cenke Xu

**Towards a Topological Classification of Nonadiabaticity in Chemical Reactions. (arXiv:2310.11633v1 [cond-mat.mtrl-sci])**

Christopher Daggett, Kaijie Yang, Chaoxing Liu, Lukas Muechler

**Dirac quantum spin liquid emerging in a kagome-lattice antiferromagnet. (arXiv:2310.11646v1 [cond-mat.str-el])**

Zhenyuan Zeng, Chengkang Zhou, Honglin Zhou, Lankun Han, Runze Chi, Kuo Li, Maiko Kofu, Kenji Nakajima, Yuan Wei, Wenliang Zhang, D. G. Mazzone, Zi Yang Meng, Shiliang Li

**Chiral topological metals with multiple types of quasiparticle fermions and large spin Hall effect in the SrGePt family materials. (arXiv:2310.11668v1 [cond-mat.mtrl-sci])**

Yi Shen, Yahui Jin, Yongheng Ge, Mingxing Chen, Ziming Zhu

**Magnetic eight-fold nodal-point and nodal-network fermions in MnB2. (arXiv:2310.11669v1 [cond-mat.mtrl-sci])**

Yongheng Ge, Ziming Zhu, Zeying Zhang, Weikang Wu, Cong Xiao, Shengyuan A. Yang

**Moire synaptic transistor for homogeneous-architecture reservoir computing. (arXiv:2310.11743v1 [cond-mat.mes-hall])**

Pengfei Wang, Moyu Chen, Yongqin Xie, Chen Pan, Kenji Watanabe, Takashi Taniguchi, Bin Cheng, Shi-Jun Liang, Feng Miao

**Topological phase locking in dissipatively-coupled noise-activated processes. (arXiv:2310.11788v1 [cond-mat.stat-mech])**

Michalis Chatzittofi, Ramin Golestanian, Jaime Agudo-Canalejo

**Quadratic nodal point in a two-dimensional noncollinear antiferromagnet. (arXiv:2310.11810v1 [cond-mat.mes-hall])**

Xukun Feng, Zeying Zhang, Weikang Wu, Xian-Lei Sheng, Shengyuan A. Yang

**Structures and Electronic States of Nickel Rich Oxides for Lithium Ion Batteries. (arXiv:2310.11856v1 [cond-mat.mtrl-sci])**

Saleem Yousuf, Md Maruf Mridha, Rita Magri

**Multiple flat bands and localized states in photonic super-Kagome lattices. (arXiv:2310.11858v1 [physics.optics])**

Limin Song, Shenyi Gao, Jina Ma, Liqin Tang, Daohong Song, Yigang Li, Zhigang Chen

**Structural transformations driven by local disorder at interfaces. (arXiv:2310.11863v1 [cond-mat.mtrl-sci])**

Yanyan Liang, Grisell Díaz Leines, Ralf Drautz, Jutta Rogal

**Pseudo Electric Field and Pumping Valley Current in Graphene Nano-bubbles. (arXiv:2310.11904v1 [cond-mat.mes-hall])**

Naif Hadadi, Adel Belayadi, Ahmed AlRabiah, Ousmane Ly, Collins Ashu Akosa, Michael Vogl, Hocine Bahlouli, Aurelien Manchon, Adel Abbout

**Valley-dependent tunneling through electrostatically created quantum dots in heterostructures of graphene with hexagonal boron nitride. (arXiv:2310.11941v1 [cond-mat.mes-hall])**

A. Belayadi, N. A. Hadadi, P. Vasilopoulos, A. Abbout

**Emergent non-Hermitian models. (arXiv:2310.11988v1 [quant-ph])**

Lumen Eek, Anouar Moustaj, Malte Röntgen, Vincent Pagneux, Vassos Achilleos, Cristiane Morais Smith

**Topological states of multiband superconductors with interband pairing. (arXiv:2310.12002v1 [cond-mat.supr-con])**

M. F. Holst, M. Sigrist, K. V. Samokhin

**A soft departure from jamming: the compaction of deformable granular matter under high pressures. (arXiv:2310.12009v1 [cond-mat.soft])**

Joel T. Clemmer, Joseph M. Monti, Jeremy B. Lechman

**Exploiting memory effects to detect the boundaries of biochemical subnetworks. (arXiv:2310.12022v1 [physics.bio-ph])**

Moshir Harsh, Leonhard Götz Vulpius, Peter Sollich

**Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions. (arXiv:2310.12040v1 [cond-mat.mes-hall])**

Philipp Schmidt, Luca Banszerus, Benedikt Frohn, Stefan Blien, Kenji Watanabe, Takashi Taniguchi, Andreas K. Hüttel, Bernd Beschoten, Fabian Hassler, Christoph Stampfer

**Two-Dimensional Noble Metal Chalcogenides in the Frustrated Snub-Square Lattice. (arXiv:2310.12048v1 [cond-mat.mtrl-sci])**

Hai-Chen Wang, Ahmad W. Huran, Miguel A. L. Marques, Muralidhar Nalabothula, Ludger Wirtz, Zachary Romestan, Aldo H. Romero

**Large Rashba splittings in bulk and monolayer of BiAs. (arXiv:2310.12094v1 [cond-mat.mtrl-sci])**

Muhammad Zubair, Igor Evangelista, Shoaib Khalid, Bharat Medasani, Anderson Janotti

**Spontaneous superconducting diode effect in non-magnetic Nb/Ru/Sr$_2$RuO$_4$ topological junctions. (arXiv:2211.14626v2 [cond-mat.supr-con] UPDATED)**

M. S. Anwar, T. Nakamura, R. Ishiguro, S. Arif, J. W. A. Robinson, S. Yonezawa, M. Sigrist, Y. Maeno

**Spatiotemporal control of active topological defects. (arXiv:2212.00666v2 [cond-mat.soft] UPDATED)**

Suraj Shankar, Luca V. D. Scharrer, Mark J. Bowick, M. Cristina Marchetti

**Phonon Self-Energy Corrections: To Screen, or Not to Screen. (arXiv:2212.11806v3 [cond-mat.mtrl-sci] UPDATED)**

Jan Berges, Nina Girotto, Tim Wehling, Nicola Marzari, Samuel Poncé

**Singlet, Triplet and Pair Density Wave Superconductivity in the Doped Triangular-Lattice Moir\'e System. (arXiv:2302.06765v3 [cond-mat.str-el] UPDATED)**

Feng Chen, D. N. Sheng

**Computing the Mass Shift of Wilson and Staggered Fermions in the Lattice Schwinger Model with Matrix Product States. (arXiv:2303.11016v2 [hep-lat] UPDATED)**

Takis Angelides, Lena Funcke, Karl Jansen, Stefan Kühn

**A baby--Skyrme model with anisotropic DM interaction: Compact skyrmions revisited. (arXiv:2303.15751v4 [hep-th] UPDATED)**

Funa Hanada, Nobuyuki Sawado

**Interplay Between Magnetic Frustration and Quantum Criticality in the Unconventional Ladder Antiferromagnet C9H18N2CuBr4. (arXiv:2306.06021v2 [cond-mat.str-el] UPDATED)**

Tao Hong, Imam Makhfudz, Xianglin Ke, Andrey A. Podlesnyak, Daniel Pajerowski, Barry Winn, Merce Deumal, Mark M. Turnbull

**Thermodynamics of interacting systems: the role of the topology and collective effects. (arXiv:2308.02255v2 [cond-mat.stat-mech] UPDATED)**

Iago N. Mamede, Karel Proesmans, Carlos E. Fiore

**Magnetized Baryonic layer and a novel BPS bound in the gauged-Non-Linear-Sigma-Model-Maxwell theory in (3+1)-dimensions through Hamilton-Jacobi equation. (arXiv:2309.03153v3 [hep-th] UPDATED)**

Fabrizio Canfora

**MOFDiff: Coarse-grained Diffusion for Metal-Organic Framework Design. (arXiv:2310.10732v1 [physics.chem-ph] CROSS LISTED)**

Xiang Fu, Tian Xie, Andrew S. Rosen, Tommi Jaakkola, Jake Smith

Found 9 papers in prb The diamond lattice has been a promising playground for both classical and quantum spin liquids. Here, the authors conduct a comprehensive symmetry classification of $S$=½ quantum spin liquids with SU(2), U(1), and ℤ${}_{2}$ gauge fields, and present dynamical spin structure factors within a self-consistent simulation. The authors highlight three discoveries: spinon Ansätze with robust gapless nodal loops, topological bands realizing topological insulators, and that Gutzwiller projection of the 0- and $\pi $-flux SU(2) spin liquids generates long-range Néel order. ABC-stacked multilayer graphene (ABC-MLG) exhibits topological surface flat bands with a divergent density of states, leading to many-body instabilities at charge neutrality. Here, we explore electronic ordering within a mean-field approach with full generic treatment of all spin-isotropic, two-site… The Quantum Hall Bilayers (QHB) at filling factor $ν=1$ represents a competition between Bose-Einstein condensation (BEC) at small distances between layers and fermionic condensation, whose influence grows with distance and results in two separate Fermi liquid states for the underlying quasiparticle… We investigate optically induced magnetization in Floquet-Weyl semimetals generated by irradiation of a circularly polarized continuous-wave laser from the group II-V narrow gap semiconductor ${\mathrm{Zn}}_{3}{\mathrm{As}}_{2}$ in a theoretical manner. Here, this trivial and nonmagnetic crystal is … The shift current is part of the second-order optical response of materials with a close connection to topology. Here we report a sign inversion in the band-edge shift photoconductivity of the Haldane model when the system undergoes a topological phase transition. This result is obtained following t… Enhancing robustness of topological orders against perturbations is one of the main goals in topological quantum computing. Since the kinetic of excitations is in conflict with the robustness of topological orders, any mechanism that reduces the mobility of excitations will be in favor of robustness… Geometrical frustration in correlated systems can give rise to a plethora of ordered states and intriguing phases. Here, we theoretically analyze vertex-sharing frustrated Kagome lattices of Josephson junctions and identify various classical and quantum phases. The frustration is provided by periodi… Two-dimensional (2D) transition-metal dichalcogenides (TMDCs) are considered highly promising platforms for next-generation optoelectronic devices. Owing to its atomically thin structure, device performance is strongly impacted by a minute amount of defects. Although defects are usually considered t… We show that a local non-Hermitian perturbation in a Hermitian lattice system generically induces scale-free localization for the continuous-spectrum eigenstates. When the perturbation lies at a finite distance to the boundary, the scale-free eigenstates are promoted to exponentially localized modes…

Date of feed: Thu, 19 Oct 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) **Quantum spin liquids on the diamond lattice**

Aishwarya Chauhan, Atanu Maity, Chunxiao Liu, Jonas Sonnenschein, Francesco Ferrari, and Yasir Iqbal

Author(s): Aishwarya Chauhan, Atanu Maity, Chunxiao Liu, Jonas Sonnenschein, Francesco Ferrari, and Yasir Iqbal

[Phys. Rev. B 108, 134424] Published Wed Oct 18, 2023

**Superconductivity and magnetism in the surface states of ABC-stacked multilayer graphene**

Oladunjoye A. Awoga, Tomas Löthman, and Annica M. Black-Schaffer

Author(s): Oladunjoye A. Awoga, Tomas Löthman, and Annica M. Black-Schaffer

[Phys. Rev. B 108, 144504] Published Wed Oct 18, 2023

**Quantum Hall bilayer in dipole representation**

S. Predin and M. V. Milovanović

Author(s): S. Predin and M. V. Milovanović

[Phys. Rev. B 108, 155129] Published Wed Oct 18, 2023

**Laser-induced surface magnetization in Floquet-Weyl semimetals**

Runnan Zhang, Ken-ichi Hino, Nobuya Maeshima, Haruki Yogemura, and Takeru Karikomi

Author(s): Runnan Zhang, Ken-ichi Hino, Nobuya Maeshima, Haruki Yogemura, and Takeru Karikomi

[Phys. Rev. B 108, 155308] Published Wed Oct 18, 2023

**Shift photoconductivity in the Haldane model**

Javier Sivianes and Julen Ibañez-Azpiroz

Author(s): Javier Sivianes and Julen Ibañez-Azpiroz

[Phys. Rev. B 108, 155419] Published Wed Oct 18, 2023

**Partially topological phase in a quantum loop gas model with tension and pressure**

J. Abouie and M. H. Zarei

Author(s): J. Abouie and M. H. Zarei

[Phys. Rev. B 108, 165133] Published Wed Oct 18, 2023

**Long-range Ising spins models emerging from frustrated Josephson junctions arrays with topological constraints**

Oliver Neyenhuys, Mikhail V. Fistul, and Ilya M. Eremin

Author(s): Oliver Neyenhuys, Mikhail V. Fistul, and Ilya M. Eremin

[Phys. Rev. B 108, 165413] Published Wed Oct 18, 2023

**Electronic and magnetic properties of single chalcogen vacancies in ${\mathrm{MoS}}_{2}/\mathrm{Au}(111)$**

Sergey Trishin, Christian Lotze, Nils Krane, and Katharina J. Franke

Author(s): Sergey Trishin, Christian Lotze, Nils Krane, and Katharina J. Franke

[Phys. Rev. B 108, 165414] Published Wed Oct 18, 2023

**Scale-free localization and $\mathcal{PT}$ symmetry breaking from local non-Hermiticity**

Bo Li, He-Ran Wang, Fei Song, and Zhong Wang

Author(s): Bo Li, He-Ran Wang, Fei Song, and Zhong Wang

[Phys. Rev. B 108, L161409] Published Wed Oct 18, 2023

Found 6 papers in prl The nonequilibrium dynamics of quantum spin models is a most challenging topic, due to the exponentiality of Hilbert space, and it is central to the understanding of the many-body entangled states that can be generated by state-of-the-art quantum simulators. A particularly important class of evoluti… We introduce a method that allows one to infer many properties of a quantum state—including nonlinear functions such as Rényi entropies—using only global control over the constituent degrees of freedom. In this protocol, the state of interest is first entangled with a set of ancillas under a fixed g… Macroscopic properties of the strong interaction near its chiral phase transition exhibit scaling behaviors, which are the same as those observed close to the magnetic transition in a three-dimensional classical spin system with O(4) symmetry. We show that the universal scaling properties of the chi… We study the effects of strain in moiré systems composed of honeycomb lattices. We elucidate the formation of almost perfect one-dimensional moiré patterns in twisted bilayer systems. The formation of such patterns is a consequence of an interplay between twist and strain which gives rise to a colla… Hopfions are localized and topologically nontrivial magnetic configurations that have received considerable attention in recent years. In this Letter, we use a micromagnetic approach to analyze the scattering of spin waves (SWs) by magnetic hopfions. Our results evidence that SWs experience an elect… Unraveling the oxidation of graphitic lattice is of great interest for atomic-scale lattice manipulation. Herein, we build epoxy cluster, atom by atom, using Van der Waals’ density-functional theory aided by Clar’s aromatic π-sextet rule. We predict the formation of cyclic epoxy trimers and its line…

Date of feed: Thu, 19 Oct 2023 03:17:09 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) **Entangling Dynamics from Effective Rotor–Spin-Wave Separation in U(1)-Symmetric Quantum Spin Models**

Tommaso Roscilde, Tommaso Comparin, and Fabio Mezzacapo

Author(s): Tommaso Roscilde, Tommaso Comparin, and Fabio Mezzacapo

[Phys. Rev. Lett. 131, 160403] Published Wed Oct 18, 2023

**Shadow Tomography from Emergent State Designs in Analog Quantum Simulators**

Max McGinley and Michele Fava

Author(s): Max McGinley and Michele Fava

[Phys. Rev. Lett. 131, 160601] Published Wed Oct 18, 2023

**Microscopic Encoding of Macroscopic Universality: Scaling Properties of Dirac Eigenspectra near QCD Chiral Phase Transition**

H.-T. Ding, W.-P. Huang, Swagato Mukherjee, and P. Petreczky

Author(s): H.-T. Ding, W.-P. Huang, Swagato Mukherjee, and P. Petreczky

[Phys. Rev. Lett. 131, 161903] Published Wed Oct 18, 2023

**Strain-Induced Quasi-1D Channels in Twisted Moiré Lattices**

Andreas Sinner, Pierre A. Pantaleón, and Francisco Guinea

Author(s): Andreas Sinner, Pierre A. Pantaleón, and Francisco Guinea

[Phys. Rev. Lett. 131, 166402] Published Wed Oct 18, 2023

**Hopfion-Driven Magnonic Hall Effect and Magnonic Focusing**

Carlos Saji, Roberto E. Troncoso, Vagson L. Carvalho-Santos, Dora Altbir, and Alvaro S. Nunez

Author(s): Carlos Saji, Roberto E. Troncoso, Vagson L. Carvalho-Santos, Dora Altbir, and Alvaro S. Nunez

[Phys. Rev. Lett. 131, 166702] Published Wed Oct 18, 2023

**Unraveling the Oxidation of a Graphitic Lattice: Structure Determination of Oxygen Clusters**

Mohammad Tohidi Vahdat, Shaoxian Li, Shiqi Huang, Carlo A. Pignedoli, Nicola Marzari, and Kumar Varoon Agrawal

Author(s): Mohammad Tohidi Vahdat, Shaoxian Li, Shiqi Huang, Carlo A. Pignedoli, Nicola Marzari, and Kumar Varoon Agrawal

[Phys. Rev. Lett. 131, 168001] Published Wed Oct 18, 2023

Found 1 papers in nat-comm **Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Anisotropic resistance with a 90° twist in a ferromagnetic Weyl semimetal, Co2MnGa**

< author missing >

Found 1 papers in comm-phys Communications Physics, Published online: 18 October 2023; doi:10.1038/s42005-023-01407-6**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) **General construction scheme for geometrically nontrivial flat band models**

Jun-Won Rhim

Found 1 papers in scipost **Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Topological Defect Lines in Two Dimensional Fermionic CFTs, by Chi-Ming Chang, Jin Chen, Fengjun Xu**

< author missing >

Submitted on 2023-10-18, refereeing deadline 2023-11-23.