Found 23 papers in cond-mat 3+1 dimensional topological phases can support loop-like excitations in
addition to point-like ones, allowing for non-trivial loop-loop and point-loop
braiding statistics not permitted to point-like excitations alone. Furthermore,
these loop-like excitations can be linked together, changing their properties.
In particular, this can lead to distinct three-loop braiding, involving two
loops undergoing an exchange process while linked to a third loop. In this
work, we investigate the loop-like excitations in a 3+1d Hamiltonian
realization of Dijkgraaf-Witten theory through direct construction of their
membrane operators, for a general finite Abelian group and 4-cocycle twist.
Using these membrane operators, we find the braiding relations and fusion rules
for the loop-like excitations, including those linked to another loop-like
excitation. Furthermore, we use these membrane operators to construct
projection operators that measure the topological charge and show that the
number of distinct topological charges measured by the 2-torus matches the
ground state degeneracy of the model on the 3-torus, explicitly confirming a
general expectation for topological phases. This direct construction of the
membrane operators sheds significant light on the key properties of the
loop-like excitations in 3+1 dimensional topological phases.
In this article, we investigate the existence of nematic-superconducting
states in the Ginzburg-Landau regime, both analytically and numerically. From
the configurations considered, a slab and a cylinder with a circular
cross-section, we demonstrate the existence of geometrical thresholds for the
obtention of non-zero nematic order parameters. Within the frame of this
constraint, the numerical calculations on the slab reveal that the competition
or collaboration between nematicity and superconductivity is a complex energy
minimization problem, requiring the accommodation of the Ginzburg-Landau
parameters of the decoupled individual systems, the sign of the bi-quadratic
potential energy relating both order parameters and the magnitude of the
applied magnetic field. Specifically, the numerical results show the existence
of a parameter regime for which it is possible to find mixed
nematic-superconducting states. These regimes depend strongly on both the
applied magnetic field and the potential coupling parameter. Since the proposed
model corresponds to the weak coupling regime, and since it is a condition on
these parameters, we design a test to decide whether this condition is
fulfilled.
During the intercalation of lithium in layered host materials such as
graphite, lithium atoms can move within the plane between two neighboring
graphene sheets, but cannot cross the sheets. Repulsive interactions between
atoms in different layers lead to the existence of ordered phases called
"stages", with stage $n$ consisting of one filled layer out of $n$, the others
being empty. Such systems can be conveniently described by a multi-layer
Cahn-Hilliard model, which can be seen as a mean-field approximation of a
lattice-gas model with intra- and interlayer interactions between lithium
atoms. In this paper, the dynamics of stage formation after a rapid quench to
lower temperature is analyzed, both by a linear stability analysis and by
numerical simulation of the full equations. In particular, the competition
between stages 2 and 3 is studied in detail. The linear stability analysis
predicts that stage 2 always grows the fastest, even in the composition range
where stage 3 is the stable equilibrium state. This is borne out by the
numerical simulations, which show that stage 3 emerges only during the
non-linear coarsening of stage 2. Some consequences of this finding for the
charge-discharge dynamics of electrodes in batteries are briefly discussed.
Hyperuniformity, the suppression of density fluctuations at large length
scales, is observed across a wide variety of domains, from cosmology to
condensed matter and biological systems. Although the standard definition of
hyperuniformity only utilizes information at the largest scales, hyperuniform
configurations have distinctive local characteristics. However, the influence
of global hyperuniformity on local structure has remained largely unexplored;
establishing this connection can help uncover long-range interaction mechanisms
and detect hyperuniform traits in finite-size systems. Here, we study the
topological properties of hyperuniform point clouds by characterizing their
persistent homology and the statistics of local graph neighborhoods. We find
that varying the structure factor results in configurations with systematically
different topological properties. Moreover, these topological properties are
conserved for subsets of hyperuniform point clouds, establishing a connection
between finite-sized systems and idealized reference arrangements. Comparing
distributions of local topological neighborhoods reveals that the hyperuniform
arrangements lie along a primarily one-dimensional manifold reflecting an
order-to-disorder transition via hyperuniform configurations. The results
presented here complement existing characterizations of hyperuniform phases of
matter, and they show how local topological features can be used to detect
hyperuniformity in size-limited simulations and experiments.
Quantum Spin Hall (QSH) insulators represent a quintessential example of a
topological phase of matter, characterized by a conducting edge mode within a
bulk energy gap. The pursuit of a tunable QSH state stands as a pivotal
objective in the development of QSH-based topological devices. In this study,
we employ first-principles calculations to identify three strain-tunable QSH
insulators based on monolayer MAlGaTe4 (where M represents Mg, Ca, or Sr).
These monolayers exhibit dynamic stability, with no imaginary modes detected in
their phonon dispersion. Additionally, they possess piezoelectric properties,
rendering them amenable to strain-induced tuning. While MgAlGaTe4 is a normal
insulator under zero strain, it transitions into the QSH phase when subjected
to external strain. Conversely, CaAlGaTe4 and SrAlGaTe4 already exhibit the QSH
phase at zero strain. Intriguingly, upon the application of biaxial strain,
these two compounds undergo phase transitions, encompassing metallic (M),
normal/trivial insulator (NI), and topological insulator (TI) phases, thereby
illustrating their strain-tunable electronic and topological properties. (Ca,
Sr)AlGaTe4, in particular, undergo M-TI/TI-M transitions under applied strain,
while MgAlGaTe4 additionally experiences an M-NI/NI-M transition, signifying it
as a material featuring a metal-insulator transition (MIT). Remarkably, the
observation of metal-trivial insulator-topological insulator transitions in
MgAlGaTe4 introduces it as a unique material platform in which both MIT and
topological phase transitions can be controlled through the same physical
parameter. Our study thus introduces a novel material platform distinguished by
highly strain-tunable electronic and topological properties, offering promising
prospects for the development of next-generation, low-power topological
devices.
The Nernst effect is a fundamental thermoelectric conversion phenomenon that
was deemed to be possible only in systems with magnetic field or magnetization.
In this work, we propose a novel dynamical chiral Nernst effect that can appear
in two-dimensional van der Waals materials with chiral structural symmetry in
the absence of any magnetic degree of freedom. This unconventional effect is
triggered by time variation of an out-of-plane electric field, and has an
intrinsic quantum geometric origin linked to not only the intralayer
center-of-mass motion but also the interlayer coherence of electronic states.
We demonstrate the effect in twisted homobilayer and homotrilayer transition
metal dichalcogenides, where the strong twisted interlayer coupling leads to
sizable intrinsic Nernst conductivities well within the experimental capacity.
This work suggests a new route for electric control of thermoelectric
conversion.
The valley degree of freedom is one of the most intriguing properties of
atomically thin transition metal dichalcogenides. Together with the possibility
to address this degree of freedom by valley-contrasting optical selection
rules, it has the potential to enable a completely new class of future
electronic and optoelectronic devices. Resonant optical nanostructures emerge
as promising tools for controlling the valley degree of freedom at the
nanoscale. However, a critical understanding gap remains in how nanostructures
and their nearfields affect the polarization properties of valley-selective
chiral emission hindering further developments in this field. In order to
address this issue, our study delves into the experimental investigation of a
hybrid model system where valley-specific chiral emission from monolayer
molybdenum disulfide is interacting with a resonant plasmonic nanosphere.
Contrary to the intuition suggesting that a centrosymmetric nanoresonator
preserves the degree of circular polarization in the farfield, our cryogenic
photoluminescence microscopy reveals almost complete depolarization. We
rigorously study the nature of this phenomenon numerically considering the
monolayer-nanoparticle interaction at different levels including excitation and
emission. We find that the farfield degree of polarization strongly reduces in
the hybrid system when including excitons emitting from outside of the system's
symmetry point, which in combination with depolarisation at the excitation
level causes the observed effect. Our results highlight the importance of
considering spatially distributed chiral emitters for precise predictions of
polarization responses in these hybrid systems. This finding advances our
fundamental knowledge of the light-valley interactions at the nanoscale but
also unveils a serious impediment of the practical fabrication of resonant
valleytronic nanostructures.
The quantum anomalous Hall (QAH) effect, first proposed by the Haldane model,
has become a paradigmatic example of application of band topology to condensed
matter physics. The recent experimental discoveries of high Chern number QAH
effect in pentalayer and tetralayer rhombohedral graphene highlights the
intriguing interplay between strong interactions and spin-orbit coupling (SOC).
Here we propose a minimal interacting model for spin-orbit coupled rhombohedral
graphene and use the Hartree-Fock analysis to explore the phase diagram at
charge neutrality. We find that with Ising SOC on one outmost graphene layer,
the in-plane layer-antiferromagnetic order is the insulating ground state
without displacement field. Upon increasing the gate displacement field, we
find that the QAH state with Chern number being equal to the layer number
emerges between layer-antiferromagentic state and layer-polarized state, which
is consistent with experimental observations. We further study phase diagram
for different thickness and find pentalayer is optimal for the QAH effect.
Finally, we predict that QAH state is enlarged by engineering opposite Ising
SOC on the opposite outmost layers of rhombohedral graphene.
Higher-order nodal line semimetals represent a recently proposed topological
semimetal class that harbors bulk nodal lines and features gapless hinge Fermi
arc excitations, governed by the bulk-hinge correspondence. In this study, we
investigate the disorder effect on a higher-order nodal line semimetal and the
consequent phase transitions. Within the pristine higher-order nodal line
semimetal model, we unveil three distinct phases: higher-order nodal line
semimetal, conventional nodal line semimetal, and normal insulator. The
higher-order nodal line semimetal is characterized by one-dimensional hinge
Fermi arc states connecting a pair of nodal rings, contrasting with
conventional nodal line semimetals that exhibit two-dimensional drumhead
surface states. We demonstrate that disorder can trigger multiple phase
transitions within this system. Significantly, intermediate disorder can induce
higher-order topology in an initial conventional nodal line semimetal or even
an initial normal insulator. Further increase in disorder drives the system
through a diffusive metallic phase before ultimately reaching the Anderson
insulator regime. Employing a combination of finite-size scaling analysis and
an effective medium theory, we construct a comprehensive phase diagram,
elucidating the intricate interplay between disorder and topology.
The quantum anomalous Hall effect resulting from the in-plane magnetization
in the OsCl$_3$ monolayer is shown to exhibit different electronic topological
phases determined by the crystal symmetries and magnetism. In this Chern
insulator, the Os-atoms form a two dimensional planar honeycomb structure with
an easy-plane ferromagnetic configuration and the required non-adiabatic paths
to tune the topology of electronic structure exist for specific magnetic
orientations based on mirror symmetries of the system. Using density functional
theory (DFT) calculations, these tunable phases are identified by changing the
orientation of the magnetic moments. We argue that in contrast to the buckled
system, here the Cl-ligands bring non-trivial topology into the system by
breaking the in-plane mirror symmetry. The interplay between the magnetic
anisotropy and electronic band-topology changes the Chern number and hence the
topological phases. Our DFT study is corroborated with comprehensive analysis
of relevant symmetries as well as a detailed explanation of topological phase
transitions using a generic tight binding model.
We undertake a numerical study of the ordering kinetics in the
two-dimensional $(2d)$ active Ising model (AIM), a discrete flocking model with
a non-conserved scalar order parameter. We find that for a quench into the
liquid-gas coexistence region and in the ordered liquid region, the
characteristic length scale of both the density and magnetization domains
follows the Lifshitz-Cahn-Allen (LCA) growth law: $R(t) \sim t^{1/2}$,
consistent with the growth law of passive systems with scalar order parameter
and non-conserved dynamics. The system morphology is analyzed with the
two-point correlation function and its Fourier transform, the structure factor,
which conforms to the well-known Porod's law, a manifestation of the coarsening
of compact domains with smooth boundaries. We also find the domain growth
exponent unaffected by different noise strengths and self-propulsion velocities
of the active particles. However, transverse diffusion is found to play the
most significant role in the growth kinetics of the AIM. We extract the same
growth exponent by solving the hydrodynamic equations of the AIM.
The properties of kagome metals are governed by the interdependence of band
topology and electronic correlations resulting in remarkably rich phase
diagrams. Here, we study the temperature evolution of the bulk electronic
structure of the antiferromagnetic kagome metal FeGe using infrared
spectroscopy. We uncover drastic changes in the low-energy interband absorption
at the 100 K structural phase transition that has been linked to a
charge-density-wave (CDW) instability. We explain this effect by the minuscule
Fe displacement in the kagome plane, which results in parallel bands in the
vicinity of the Fermi level. In contrast to conventional CDW materials,
however, the spectral weight shifts to low energies, ruling out the opening of
a CDW gap in FeGe.
Strongly correlated electron materials are often characterized by competition
and interplay of multiple quantum states. For example, in high-temperature
cuprate superconductors unconventional superconductivity, spin- and
charge-density wave orders coexist. A key question is whether competing states
coexist on the atomic scale or if they segregate into distinct 'islands'. Using
X-ray diffraction, we investigate the competition between charge order and
superconductivity in the archetypal cuprate La(2-x)BaxCuO4, around the x =
1/8-doping, where uniaxial stress restores optimal 3D superconductivity at
approximately 0.06 GPa. We find that the charge order peaks and the correlation
length along the stripe are strongly reduced up to the critical stress, above
which they stay constant. Simultaneously, the charge order onset temperature
only shows a modest decrease. Our findings suggest that optimal 3D
superconductivity is not linked to the absence of charge stripes but instead
requires their arrangement into smaller 'islands'. Our results provide insight
into the length scales over which the interplay between superconductivity and
charge order takes place.
In low-disorder, two-dimensional electron systems (2DESs), the fractional
quantum Hall states at very small Landau level fillings ($\nu$) terminate in a
Wigner solid (WS) phase, where electrons arrange themselves in a periodic
array. The WS is typically pinned by the residual disorder sites and manifests
an insulating behavior, with non-linear current-voltage (\textit{I-V}) and
noise characteristics. We report here, measurements on an ultra-low-disorder,
dilute 2DES, confined to a GaAs quantum well. In the $\nu < 1/5$ range,
superimposed on a highly-insulating longitudinal resistance, the 2DES exhibits
a developing fractional quantum Hall state at $\nu=1/7$, attesting to its
exceptional high quality, and dominance of electron-electron interaction in the
low filling regime. In the nearby insulating phases, we observe remarkable
non-linear \textit{I-V} and noise characteristics as a function of increasing
current, with current thresholds delineating three distinct phases of the WS: a
pinned phase (P1) with very small noise, a second phase (P2) in which $dV/dI$
fluctuates between positive and negative values and is accompanied by very high
noise, and a third phase (P3) where $dV/dI$ is nearly constant and small, and
noise is about an order of magnitude lower than in P2. In the depinned (P2 and
P3) phases, the noise spectrum also reveals well-defined peaks at frequencies
that vary linearly with the applied current, suggestive of washboard
frequencies. We discuss the data in light of a recent theory that proposes
different dynamic phases for a driven WS.
We study transport through interfaces in topological nodal-line semimetals,
focusing on two geometries: a single interface between two large samples, one
nodal-line semimetal and one metal, and an infinite nodal-line semimetal slab
in between two metallic regions. We investigate the dependence of the spectra
on the boundary conditions, showing how they affect the surface states and the
band dispersion. We find a set of drum states, arising from the hybridization
of the drumhead states on opposite surfaces at finite slab width, and describe
their signatures in the transport properties of a clean sample. Finally, we
compute the electronic trajectories in the ballistic regime and show that there
is a series of resonant angles that ensure perfect transmission. We also show
how the current density profile acquires an inhomogeneous distribution in the
radial direction.
We have studied multi-Dirac/Weyl systems with arbitrary topological charge n
in the presence of a lattice of local magnetic moments. To do so, we propose a
multi-Dirac/Weyl Kondo lattice model which is analyzed through a mean-field
approach appropriate to the paramagnetic phase. We study both the broken
time-reversal and the broken inversion-symmetry Weyl cases. The multi- Dirac
and broken-time reversal multi-Weyl cases have similar behavior, which is in
contrast to the broken-parity case. For the former, low-energy particle-hole
symmetry leads to the emergence of a critical coupling constant below which
there is no Kondo quenching, reminiscent of the pseudogap Kondo impurity
problem. Away from particle-hole symmetry, there is always Kondo quenching. For
the broken inversion symmetry, there is no critical coupling. Depending on the
conduction electron filling, Kondo insulator, heavy fermion metal or semimetal
phases can be realized. In the last two cases, quasiparticle renormalizations
can differ widely between opposite chirality sectors, with characteristic
dependences on microscopic parameters that could in principle be detected
experimentally.
Kibble-Zurek mechanism relates the domain of non-equilibrium dynamics with
the critical properties at equilibrium. It establishes a power law connection
between non-equilibrium defects quenched through a continuous phase transition
and the quench rate via the scaling exponent. We present a novel numerical
scheme to estimate the scaling exponent wherein the notion of defects is mapped
to errors, previously introduced to quantify a variety of gapped quantum
phases. To demonstrate the versatility of our method we conduct numerical
experiments across a broad spectrum of spin-half models hosting local and
symmetry protected topological order. Furthermore, an implementation of the
quench dynamics featuring a topological phase transition on a digital quantum
computer is proposed to quantify the associated criticality.
Superconducting phase typically favors a uniform spatial distribution like
ferromagnet. Nevertheless, the pair-density-wave state exhibits sign changes in
the pairing order, and thus frustrations can occur in phase coherence. We
propose a mechanism to the sextetting order arising from the frustrations in
the phase coherence of a pair-density-wave state, whose spatial modulation
manifests a vortex-antivortex honeycomb lattice. The classical ground state
configurations are mapped to Baxter's three-coloring model, exhibiting a
macroscopic degeneracy and extensive entropy. The phase coherence problem
couples the U(1) phases and the vorticity variables together. The resultant
color and phase fluctuations suppress the pair-density-wave order but maintain
the sextetting order above the superconducting $T_c$. The $1/3$-fractional
vortex emerges as the fundamental topological defect in the sextetting order.
This novel frustrated superconductivity provides an alternative explanation for
the experimental observation of fractional oscillation in CsV$_3$Sb$_5$.
A proposal of the existence of an {\em Anomalous} phase ($\mathcal{A}$ phase)
[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.131.056202 Das et
al., Phys. Rev. Lett. 131, 056202 (2023)] at the experimental range of moderate
Landau-level-mixing strength has recently been made for $5/2$ state. We here
report that the gapped $\mathcal{A}$ phase is generic to the sequence of
spin-polarized fractional quantum Hall states with filling fractions $\nu =
n/(nm-1)$ and $\nu = 1-n/(nm-1)$, $(n \geqslant 1,\,m\geqslant 3)$, that
exhausts almost all the observed states and also predicts some states in the
second Landau level for GaAs systems. Our proposed trial wavefunctions for all
these states have remarkably high overlaps with the corresponding exact ground
states and can support non-Abelian quasiparticle excitations with charge
$e/[2(nm-1)]$. By analyzing edge modes, we predict experimentally verifiable
thermal Hall conductance $2.5(\pi^2 k_B^2T/3h)$ for all the states in these
sequences.
Bilayer graphene is a promising platform for electrically controllable qubits
in a two-dimensional material. Of particular interest is the ability to encode
quantum information in the so-called valley degree of freedom, a two-fold
orbital degeneracy that arises from the symmetry of the hexagonal crystal
structure. The use of valleys could be advantageous, as known spin- and
orbital-mixing mechanisms are unlikely to be at work for valleys, promising
more robust qubits. The Berry curvature associated with valley states allows
for electrical control of their energies, suggesting routes for coherent qubit
manipulation. However, the relaxation time of valley states -- which ultimately
limits these qubits' coherence properties and therefore their suitability as
practical qubits -- is not yet known. Here, we measure the characteristic
relaxation times of these spin and valley states in gate-defined bilayer
graphene quantum dot devices. Different valley states can be distinguished from
each other with a fidelity of over 99%. The relaxation time between valley
triplets and singlets exceeds 500ms, and is more than one order of magnitude
longer than for spin states. This work facilitates future measurements on
valley-qubit coherence, demonstrating bilayer graphene as a practical platform
hosting electrically controlled long-lived valley qubits.
Continuous phase transitions can be classified into ones characterized by
local-order parameters and others that need additional topological constraints.
The critical dynamics near the former transitions have been extensively
studied, but the latter is less understood. We fill this gap in knowledge by
studying the transition dynamics to a parity-breaking topological ground state
called the chiral soliton lattice in quantum chromodynamics at finite
temperature, baryon chemical potential, and external magnetic field. We find a
slowing down of the soliton's translational motion as the critical magnetic
field approaches while the local dissipation rate remains finite. Therefore,
the characteristic time it takes to converge to the stationary state associated
with a finite topological number strongly depends on the initial configuration:
whether it forms a solitonic structure or not.
Generative models offer a direct way of modeling complex data. Energy-based
models attempt to encode the statistical correlations observed in the data at
the level of the Boltzmann weight associated with an energy function in the
form of a neural network. We address here the challenge of understanding the
physical interpretation of such models. In this study, we propose a simple
solution by implementing a direct mapping between the Restricted Boltzmann
Machine and an effective Ising spin Hamiltonian. This mapping includes
interactions of all possible orders, going beyond the conventional pairwise
interactions typically considered in the inverse Ising (or Boltzmann Machine)
approach, and allowing the description of complex datasets. Earlier works
attempted to achieve this goal, but the proposed mappings were inaccurate for
inference applications, did not properly treat the complexity of the problem,
or did not provide precise prescriptions for practical application. To validate
our method, we performed several controlled inverse numerical experiments in
which we trained the RBMs using equilibrium samples of predefined models with
local external fields, 2-body and 3-body interactions in different sparse
topologies. The results demonstrate the effectiveness of our proposed approach
in learning the correct interaction network and pave the way for its
application in modeling interesting binary variable datasets. We also evaluate
the quality of the inferred model based on different training methods.
Chirality is a fundamental property of great importance in physics,
chemistry, and biology, and has recently been found to generate unexpected spin
polarization for electrons passing through organic molecules, known as
chirality-induced spin selectivity (CISS). CISS shows promising application
potential in spintronic devices, spin-controlled chemistry, and enantiomer
separation. It focuses on organic molecules that exhibit poor electronic
conductivity and inherent complexities, such as the debated role of SOC at the
molecule-metal interface. In this work, we go beyond organic molecules and
study chiral solids with excellent electrical conductivity, intrinsic SOC, and
topological electronic structures. We demonstrate that electrons exhibit both
spin and orbital polarization as they pass through chiral crystals. Both
polarization increases with material thickness before saturating to the bulk
values. The spin polarization is proportional to intrinsic SOC while the
orbital polarization is insensitive to SOC. The large spin polarization comes
with strong electrical magnetochiral anisotropy in the magneto-transport of
these chiral crystals (e.g., RhSi). Our work reveals the interplay of
chirality, electron spin, and orbital in chiral crystals, paving the way for
developing chiral solids for chirality-induced phenomena.

Date of feed: Thu, 25 Jan 2024 01:30:00 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) **Twisted Lattice Gauge Theory: Membrane Operators, Three-loop Braiding and Topological Charge. (arXiv:2401.13042v1 [cond-mat.str-el])**

Joe Huxford, Yong Baek Kim, Dung Xuan Nguyen

**On the existence of nematic-superconducting states in the Ginzburg-Landau regime. (arXiv:2401.13106v1 [cond-mat.supr-con])**

Mariano De Leo, Juan Pablo Borgna, Diego García Ovalle

**Spinodal decomposition and domain coarsening in a multi-layer Cahn-Hilliard model for lithium intercalation in graphite. (arXiv:2401.13108v1 [cond-mat.mtrl-sci])**

Antoine Cordoba, Marion Chandesris, Mathis Plapp

**Persistent homology and topological statistics of hyperuniform point clouds. (arXiv:2401.13123v1 [cond-mat.stat-mech])**

Marco Salvalaglio, Dominic J. Skinner, Jörn Dunkel, Axel Voigt

**Tunable Topological Phase Transitions in a Piezoelectric Janus Monolayer. (arXiv:2401.13124v1 [cond-mat.mtrl-sci])**

Tanshia Tahreen Tanisha (1), Md. Shafayat Hossain (2), Nishat Tasnim Hiramony (1), Ashiqur Rasul (1), M. Zahid Hasan (2), Quazi D. M. Khosru (1) ((1) Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh, (2) Department of Physics, Princeton University, Princeton, NJ, USA)

**Dynamical Chiral Nernst Effect in Twisted Van der Waals Few Layers. (arXiv:2401.13278v1 [cond-mat.mes-hall])**

Juncheng Li, Dawei Zhai, Cong Xiao, Wang Yao

**Influence of resonant plasmonic nanoparticles on optically accessing the valley degree of freedom in 2D semiconductors. (arXiv:2401.13372v1 [physics.optics])**

Tobias Bucher (1, 2, 3), Zlata Fedorova (1, 2, 3), Mostafa Abasifard (2, 1, 3), Rajeshkumar Mupparapu (2), Matthias J. Wurdack (4, 1, 2, 3), Emad Najafidehaghani (5), Ziyang Gan (5), Heiko Knopf (6, 2, 3), Antony George (5, 3), Falk Eilenberger (6, 2, 3, 7), Thomas Pertsch (2, 3, 6, 7), Andrey Turchanin (5, 3, 8), Isabelle Staude (1, 2, 3, 7) ((1) Institute of Solid State Physics, Friedrich Schiller University Jena, Germany (2) Institute of Applied Physics, Friedrich Schiller University Jena, Germany (3) Abbe Center of Photonics, Friedrich Schiller University Jena, Germany (4) ARC Centre of Excellence in Future Low-Energy Electronics Technologies and Department of Quantum Science and Technology, Research School of Physics, The Australian National University, Canberra, Australia (5) Institute of Physical Chemistry, Friedrich Schiller University Jena, Germany (6) Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Jena, Germany (7) Max Planck School of Photonics, Germany (8) Jena Center for Soft Matter (JCSM), Jena, Germany)

**Layer-Dependent Quantum Anomalous Hall Effect in Rhombohedral Graphene. (arXiv:2401.13413v1 [cond-mat.mes-hall])**

Zhaochen Liu, Jing Wang

**Disorder-induced phase transitions in higher-order nodal line semimetals. (arXiv:2401.13443v1 [cond-mat.dis-nn])**

Yue-Ran Ding, Dong-Hui Xu, Chui-Zhen Chen

**In-plane magnetization orientation driven topological phase transition in OsCl$_3$ monolayer. (arXiv:2401.13449v1 [cond-mat.str-el])**

Ritwik Das, Subhadeep Bandyopadhyay, Indra Dasgupta

**Ordering kinetics in the active Ising model. (arXiv:2401.13471v1 [cond-mat.stat-mech])**

Sayam Bandyopadhyay, Swarnajit Chatterjee, Aditya Kumar Dutta, Mintu Karmakar, Heiko Rieger, Raja Paul

**Intriguing low-temperature phase in the antiferromagnetic kagome metal FeGe. (arXiv:2401.13474v1 [cond-mat.str-el])**

M. Wenzel, E. Uykur, A. A. Tsirlin, S. Pal, R. Mathew Roy, C. Yi, C. Shekhar, C. Felser, A. V. Pronin, M. Dressel

**Tuning of Charge Order by Uniaxial Stress in a Cuprate Superconductor. (arXiv:2401.13526v1 [cond-mat.supr-con])**

Laure Thomarat, Frank Elson, Elisabetta Nocerino, Debarchan Das, Oleh Ivashko, Marek Bartkowiak, Martin Månsson, Yasmine Sassa, Tadashi Adachi, Martin v. Zimmermann, Hubertus Luetkens, Johan Chang, Marc Janoschek, Zurab Guguchia, Gediminas Simutis

**Moving crystal phases of a quantum Wigner solid in an ultra-high-quality 2D electron system. (arXiv:2401.13533v1 [cond-mat.mes-hall])**

P. T. Madathil, K. A. Villegas Rosales, Y. J. Chung, K. W. West, K. W. Baldwin, L. N. Pfeiffer, L. W. Engel, M. Shayegan

**Interfaces of nodal-line semimetals: drum states, transport and refraction. (arXiv:2401.13542v1 [cond-mat.mes-hall])**

Mattia Rudi, Alessandro De Martino, Kristof Moors, Domenico Giuliano, Francesco Buccheri

**Multi-Dirac and Weyl physics in heavy-fermion systems. (arXiv:2401.13607v1 [cond-mat.str-el])**

Joelson F. Silva, E. Miranda

**Kibble-Zurek mechanism and errors of gapped quantum phases. (arXiv:2401.13625v1 [quant-ph])**

Amit Jamadagni, Javad Kazemi, Arpan Bhattacharyya

**Frustrated superconductivity and sextetting order. (arXiv:2209.13745v2 [cond-mat.supr-con] UPDATED)**

Zhiming Pan, Chen Lu, Fan Yang, Congjun Wu

**Theory of Fractional Quantum Hall States of the $\mathcal{A}$ phase in the Second Landau Level. (arXiv:2301.00850v2 [cond-mat.mes-hall] UPDATED)**

Sudipto Das, Sahana Das, Sudhansu S. Mandal

**Long-lived valley states in bilayer graphene quantum dots. (arXiv:2304.00980v2 [cond-mat.mes-hall] UPDATED)**

Rebekka Garreis, Chuyao Tong, Jocelyn Terle, Max Josef Ruckriegel, Jonas Daniel Gerber, Lisa Maria Gächter, Kenji Watanabe, Takashi Taniguchi, Thomas Ihn, Klaus Ensslin, Wei Wister Huang

**Novel transition dynamics of topological solitons. (arXiv:2304.01264v3 [hep-th] UPDATED)**

Kentaro Nishimura, Noriyuki Sogabe

**Inferring effective couplings with Restricted Boltzmann Machines. (arXiv:2309.02292v3 [cond-mat.dis-nn] UPDATED)**

Aurélien Decelle, Cyril Furtlehner, Alfonso De Jesus Navas Gómez, Beatriz Seoane

**Chirality induced spin selectivity in chiral crystals. (arXiv:2312.04366v2 [cond-mat.mes-hall] UPDATED)**

Qun Yang, Yongkang Li, Claudia Felser, Binghai Yan

Found 3 papers in prb In the substituted ${\mathrm{Nd}}_{1−x}{\mathrm{Tb}}_{x}{\mathrm{Fe}}_{3}{({\mathrm{BO}}_{3})}_{4}$ $(x=0.1 \text{and} x=0.2)$, possessing almost easy-axis magnetic structure at low temperatures, an unusual two-step transition in fields along the trigonal $c$ axis was observed by magnetization and s… Weyl materials exhibit topologically nontrivial electronic or phonon energy-band crossings, offering promising conditions for fabricating novel topological devices and investigating exotic electrical and thermal transport properties. Here, we employ first-principles calculations to analyze the phono… Topological flat bands, which are regarded as the cornerstone of various topological states induced by the many-body interaction, have aroused great interest in the fields of physics and material science. To date, most of the established topological flat bands have been employed in Euclidean space. …

Date of feed: Thu, 25 Jan 2024 04:17:07 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) **Hidden magnetic instability in the substituted multiferroics $(\mathrm{Nd},\mathrm{Tb}){\mathrm{Fe}}_{3}{({\mathrm{BO}}_{3})}_{4}$**

I. V. Golosovsky, A. A. Mukhin, V. Skumryev, E. Ressouche, V. Yu. Ivanov, and I. A. Gudim

Author(s): I. V. Golosovsky, A. A. Mukhin, V. Skumryev, E. Ressouche, V. Yu. Ivanov, and I. A. Gudim

[Phys. Rev. B 109, 014421] Published Wed Jan 24, 2024

**Ideal type-I Weyl phonons in ${\mathrm{BAsO}}_{4}$ with fewest Weyl points**

Jian Liu, Xikui Ma, Lei Sun, Zeying Zhang, Yun Ni, Sheng Meng, and Mingwen Zhao

Author(s): Jian Liu, Xikui Ma, Lei Sun, Zeying Zhang, Yun Ni, Sheng Meng, and Mingwen Zhao

[Phys. Rev. B 109, 045203] Published Wed Jan 24, 2024

**Hyperbolic topological flat bands**

Hao Yuan, Weixuan Zhang, Qingsong Pei, and Xiangdong Zhang

Author(s): Hao Yuan, Weixuan Zhang, Qingsong Pei, and Xiangdong Zhang

[Phys. Rev. B 109, L041109] Published Wed Jan 24, 2024

Found 1 papers in prl Non-Abelian gauge fields are versatile tools for synthesizing topological phenomena, but have so far been mostly studied in Hermitian systems, where gauge flux has to be defined from a closed loop in order for vector potentials, whether Abelian or non-Abelian, to become physically meaningful. We sho…

Date of feed: Thu, 25 Jan 2024 04:17:04 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) **Synthetic Non-Abelian Gauge Fields for Non-Hermitian Systems**

Zehai Pang, Bengy Tsz Tsun Wong, Jinbing Hu, and Yi Yang

Author(s): Zehai Pang, Bengy Tsz Tsun Wong, Jinbing Hu, and Yi Yang

[Phys. Rev. Lett. 132, 043804] Published Wed Jan 24, 2024

Found 1 papers in pr_res Quantum error correction is an essential ingredient for reliable quantum computation for theoretically provable quantum speedup. Topological color codes, one of the quantum error correction codes, have an advantage against the surface codes in that all Clifford gates can be implemented transversally…

Date of feed: Thu, 25 Jan 2024 04:17:04 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) **Ising model formulation for highly accurate topological color codes decoding**

Yugo Takada, Yusaku Takeuchi, and Keisuke Fujii

Author(s): Yugo Takada, Yusaku Takeuchi, and Keisuke Fujii

[Phys. Rev. Research 6, 013092] Published Wed Jan 24, 2024

Found 2 papers in acs-nano

Date of feed: Wed, 24 Jan 2024 14:04:26 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] Enabling Waveguide Optics in Rhombohedral-Stacked Transition Metal Dichalcogenides with Laser-Patterned Grating Couplers**

Fabian Mooshammer, Xinyi Xu, Chiara Trovatello, Zhi Hao Peng, Birui Yang, Jacob Amontree, Shuai Zhang, James Hone, Cory R. Dean, P. James Schuck, and D. N. BasovACS NanoDOI: 10.1021/acsnano.3c08522

**[ASAP] Writing and Detecting Topological Charges in Exfoliated Fe5–xGeTe2**

Alex Moon, Yue Li, Conor McKeever, Brian W. Casas, Moises Bravo, Wenkai Zheng, Juan Macy, Amanda K. Petford-Long, Gregory T. McCandless, Julia Y. Chan, Charudatta Phatak, Elton J. G. Santos, and Luis BalicasACS NanoDOI: 10.1021/acsnano.3c09234

Found 1 papers in science-adv

Date of feed: Wed, 24 Jan 2024 18:58:28 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) **Hidden phonon highways promote photoinduced interlayer energy transfer in twisted transition metal dichalcogenide heterostructures**

Amalya C. Johnson, Johnathan D. Georgaras, Xiaozhe Shen, Helen Yao, Ashley P. Saunders, Helen J. Zeng, Hyungjin Kim, Aditya Sood, Tony F. Heinz, Aaron M. Lindenberg, Duan Luo, Felipe H. da Jornada, Fang Liu

Science Advances, Volume 10, Issue 4, January 2024.

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) **Alkali metal bilayer intercalation in graphene**

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**Magnetoresistive-coupled transistor using the Weyl semimetal NbP**

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