Found 35 papers in cond-mat We study the effects of anisotropy on the magnetoresistance of Weyl
semimetals (WSMs) in the ultraquantum regime. We utilize the fact that many
Weyl semimetals are approximately axially anisotropic. We find that anisotropy
manifests itself in the strong dependence of the magnetoresistance on the polar
and azimuthal angles determining the orientation of the anisotropy axis with
respect to the applied magnetic field and electric current. We also predict
that the ratio of magnetoresistances in the geometries, where the magnetic
field and anisotropy axes are aligned and where they are orthogonal, scales as
$(v_\bot/v_\parallel)^2$ where $v_\bot$ and $v_\parallel$ are the corresponding
Fermi velocities.
The topological Kondo effect is a genuine manifestation of the nonlocality of
Majorana modes. We investigate its out-of-equilibrium signatures in a model
with a Cooper-pair box hosting four of these topological modes, each connected
to a metallic lead. Through matrix-product-state techniques, we simulate the
relaxation of the Majorana magnetization, which allows us to determine the
related Kondo temperature. Then, we analyze the onset of electric transport
after a quantum quench of a lead voltage. Our results apply to Majorana
Cooper-pair boxes fabricated in double nanowire devices and provide
non-perturbative evidence of the crossover from weak-coupling states to the
strongly correlated topological Kondo regime. The latter dominates at the
superconductor charge degeneracy points and displays the expected universal
fractional zero-bias conductance.
We propose a minimal transport experiment in the linear regime that can probe
the chirality of twisted moir\'e structures. First, we point out that usual
two-terminal conductance measurements cannot access the chirality of a system.
Only with a third contact and in the presence of an in-plane magnetic field, a
chiral system displays non-reciprocal transport even if all contacts are
symmetric. We thus propose to use the third lead as a voltage probe and show
that opposite enantiomers give rise to different voltage drops on the third
lead. The third lead can also be used as a current probe in the case of
layer-discriminating contacts that can detect different handedness even in the
absence of a magnetic field. Our exact symmetry considerations are supported by
numerical calculations that confirm our conclusions and also demonstrate that
there is a change of chirality around the magic angle.
Transition metal dichalcogenide (TMD) heterobilayers provide a versatile
platform to explore unique excitonic physics via properties of the constituent
TMDs and external stimuli. Interlayer excitons (IXs) can form in TMD
heterobilayers as delocalized or localized states. However, the localization of
IX in different types of potential traps, the emergence of biexcitons in the
high-excitation regime, and the impact of potential traps on biexciton
formation have remained elusive. In our work, we observe two types of potential
traps in a MoSe$_2$/WSe$_2$ heterobilayer, which result in significantly
different emission behavior of IXs at different temperatures. We identify the
origin of these traps as localized defect states and the moir{\'e} potential of
the TMD heterobilayer. Furthermore, with strong excitation intensity, a
superlinear emission behavior indicates the emergence of interlayer biexcitons,
whose formation peaks at a specific temperature. Our work elucidates the
different excitation and temperature regimes required for the formation of both
localized and delocalized IX and biexcitons, and, thus, contributes to a better
understanding and application of the rich exciton physics in TMD
heterostructures.
FeTe$_{0.55}$Se$_{0.45}$(FTS) occupies a special spot in modern condensed
matter physics at the intersections of electron correlation, topology, and
unconventional superconductivity. The bulk electronic structure of FTS is
predicted to be topologically nontrivial thanks to the band inversion between
the $d_{xz}$ and $p_z$ bands along $\Gamma$-$Z$. However, there remain debates
in both the authenticity of the Dirac surface states (DSS) and the experimental
deviations of band structure from the theoretical band inversion picture. Here
we resolve these debates through a comprehensive ARPES investigation. We first
observe a persistent DSS independent of $k_z$. Then, by comparing FTS with FeSe
which has no band inversion along $\Gamma$-$Z$, we identify the spectral weight
fingerprint of both the presence of the $p_z$ band and the inversion between
the $d_{xz}$ and $p_z$ bands. Furthermore, we propose a reconciling band
structure under the framework of a tight-binding model preserving crystal
symmetry. Our results highlight the significant influence of correlation on
modifying the band structure and make a strong case for the existence of
topological band structure in this unconventional superconductor.
Moir\'e magnetism featured by stacking engineered atomic registry and lattice
interactions has recently emerged as an appealing quantum state of matter at
the forefront condensed matter physics research. Nanoscale imaging of moir\'e
magnets is highly desirable and serves as a prerequisite to investigate a broad
range of intriguing physics underlying the interplay between topology,
electronic correlations, and unconventional nanomagnetism. Here we report spin
defect-based wide-field imaging of magnetic domains and spin fluctuations in
twisted double trilayer (tDT) chromium triiodide CrI3. We explicitly show that
intrinsic moir\'e domains of opposite magnetizations appear over arrays of
moir\'e supercells in low-twist-angle tDT CrI3. In contrast, spin fluctuations
measured in tDT CrI3 manifest little spatial variations on the same mesoscopic
length scale due to the dominant driving force of intralayer exchange
interaction. Our results enrich the current understanding of exotic magnetic
phases sustained by moir\'e magnetism and highlight the opportunities provided
by quantum spin sensors in probing microscopic spin related phenomena on
two-dimensional flatland.
Light-matter interaction is crucial to both understanding fundamental
phenomena and developing versatile applications. Strong coupling, robustness,
and controllability are the three most important aspects in realizing
light-matter interactions. Topological and non-Hermitian photonics, have
provided frameworks for robustness and extensive control freedom, respectively.
How to engineer the properties of the edge state such as photonic density of
state, scattering parameters by using non-Hermitian engineering while ensuring
topological protection has not been fully studied. Here we construct a
parity-time-symmetric dimerized photonic lattice and generate complex-valued
edge states via spontaneous PT-symmetry breaking. The enhanced strong coupling
between the topological photonic edge mode and magnon mode in a ferromagnetic
spin ensemble is demonstrated. Our research reveals the subtle non-Hermitian
topological edge states and provides strategies for realizing and engineering
topological light-matter interactions.
We study the transport properties of Dirac fermions through gapped graphene
through a magnetic barrier irradiated by a laser field oscillating in time. We
use Floquet theory and the solution of Weber's differential equation to
determine the energy spectrum corresponding to the three regions composing the
system. The boundary conditions and the transfer matrix approach {are} employed
to explicitly determine the transmission probabilities for multi-energy bands
and the associated conductance. As an illustration, we focus only on the three
first bands: the central band $T_0$ (zero photon exchange) and the two first
side bands $T_{\pm1}$ (photon emission or absorption). It is found that the
laser field activates the process of translation through photon exchange.
Furthermore, we show that varying the incident angle and energy gap strongly
affects the transmission process. The conductance increases when the number of
electrons that cross the barrier increases, namely when there is a significant
transmission.
Strongly correlated states are commonly emerged in twisted bilayer graphene
(TBG) with magic-angle, where the electron-electron (e-e) interaction U becomes
prominent relative to the small bandwidth W of the nearly flat band. However,
the stringent requirement of this magic angle makes the sample preparation and
the further application facing great challenges. Here, using scanning tunneling
microscopy (STM) and spectroscopy (STS), we demonstrate that the
correlation-induced symmetry-broken states can also be achieved in a 3.45{\deg}
TBG, via engineering this non-magic-angle TBG into regimes of U/W > 1. We
enhance the e-e interaction through controlling the microscopic dielectric
environment by using a MoS2 substrate. Simultaneously, the bandwidth of the
low-energy van Hove singularity (VHS) peak is reduced by enhancing the
interlayer coupling via STM tip modulation. When partially filled, the VHS peak
exhibits a giant splitting into two states flanked the Fermi level and shows a
symmetry-broken LDOS distribution with a stripy charge order, which confirms
the existence of strong correlation effect in our 3.45{\deg} TBG. Our result
paves the way for the study and application of the correlation physics in TBGs
with a wider range of twist angle.
We present theoretical calculations of the optical spectrum of monolayer
MoS$_2$ with a charged defect. In particular, we solve the Bethe-Salpeter
equation based on an atomistic tight-binding model of the MoS$_2$ electronic
structure which allows calculations for large supercells. The defect is
modelled as a point charge whose potential is screened by the MoS$_2$
electrons. We find that the defect gives rise to new peaks in the optical
spectrum approximately 100-200 meV below the first free exciton peak. These
peaks arise from transitions involving in-gap bound states induced by the
charged defect. Our findings are in good agreement with experimental
measurements.
Molybdenum ditelluride (MoTe2) is an unique transition metal dichalcogenide
owing to its energetically comparable 1H and 1T prime phases. This implies a
high chance of coexistence of 1H-1T prime heterostructures which poses great
complexity in the measurement of the intrinsic lattice thermal conductivities
(kappa). In this work, via first-principles calculations, we examine the
lattice-wave propagation and thermal conduction in this highly structurally
anisotropic 1T prime MoTe2. Our calculation shows that the 1T prime phase has a
sound velocity of 2.13 km/s (longitudinal acoustic wave), much lower than that
of the 1H phase (4.05 km /s), indicating a staggered transmission of lattice
waves across the boundary from 1H to 1T prime phase. Interestingly, the highly
anisotropic 1T prime MoTe2 shows nearly isotropic and limited kappa_L of 13.02
W/mK, owing to a large Gruneisen parameter of acoustic flexural mode, heavy
masses of Mo and Te elements and a low phonon group velocity. Accumulative
kappa_L as a function of mean free path (MFP) indicates phonons with MFP less
than ~300 nm contribute 80% of kappa_L and an inflection point at ~600 nm. Our
results will be critical for understanding of the size dependent kappa_L of
nanostructured 1T prime MoTe2.
We investigate the Hubbard model with the Rashba spin-orbit coupling on a
square lattice. The Rashba spin-orbit coupling generates two-dimensional Weyl
points in the band dispersion. In a system with edges along [11] direction,
zero-energy edge states appear, while no edge state exists for a system with
edges along an axis direction. The zero-energy edge states with a certain
momentum along the edges are predominantly in the up-spin state on the right
edge, while they are predominantly in the down-spin state on the left edge.
Thus, the zero-energy edge states are helical. By using a variational Monte
Carlo method for finite Coulomb interaction cases, we find that the Weyl points
can move toward the Fermi level by the correlation effects. We also investigate
the magnetism of the model by the Hartree-Fock approximation and discuss weak
magnetic order in the weak-coupling region.
Three-dimensional higher-order topological semimetals in crystalline systems
exhibit higher-order Fermi arcs on one-dimensional hinges, challenging the
conventional bulk-boundary correspondence. However, the existence of
higher-order Fermi arc states in aperiodic quasicrystalline systems remains
uncertain. In this work, we present the emergence of three-dimensional
quasicrystalline second-order topological semimetal phases by vertically
stacking two-dimensional quasicrystalline second-order topological insulators.
These quasicrystalline topological semimetal phases are protected by rotational
symmetries forbidden in crystals, and are characterized by topological hinge
Fermi arcs connecting fourfold degenerate Dirac-like points in the spectrum.
Our findings reveal an intriguing class of higher-order topological phases in
quasicrystalline systems, shedding light on their unique properties.
We computed the phase diagram of the zigzag graphene nanoribbons as a
function of on-site repulsion, doping, and disorder strength. The topologically
ordered phase undergoes topological phase transitions into crossover phases,
which are new disordered phases with a nonuniversal topological entanglement
entropy with significant variance. The topological order is destroyed by
competition between localization effects and on-site repulsion. We found that
strong on-site repulsion and/or doping weakens the nonlocal correlations
between the opposite zigzag edges. In one of the crossover phases, both
$\frac{e^-}{2}$ fractional charges and spin-charge separation were absent;
however, charge-transfer correlations between the zigzag edges were possible.
Another crossover phase contains $\frac{e^-}{2}$ fractional charges, but no
charge transfer correlations. In low-doped zigzag ribbons the interplay between
electron localization and on-site repulsion contributes to the spatial
separation of quasi-degenerate gap-edge states and protects the charge
fractionalization against quantum fluctuations. In all these effects, mixed
chiral gap-edge states play an important role. The properties of nontopological
strongly disordered and strongly repulsive phases are also observed. Each phase
of the phase diagram has a different zigzag-edge structure.
Based on C8, carbon 4C, with cfc topology, two hybrid carbon allotropes
generated by inserting C(sp2) and C(sp1) carbon atoms into C8 diamond-like
lattice were identified and labeled ene-C10 containing C(sp2) and ene-yne-C14
containing C(sp2 and sp1). The introduced double and triple chemical
descriptions were illustrated from the projected charge densities. The crystal
density and the cohesive energy were found to decrease due to the enhanced
openness of the structures from inserted sp2/sp1 carbons, with a resulting
decrease of the hardness along the series C8, C10, C12, and C14. The novel
hybrid allotropes were found stable mechanically (elastic constants and their
combinations) and dynamically (phonons band structures). The thermal properties
from the temperature dependence of the heat capacity CV were found to
increasingly depart from diamond-like C8 to higher values. From the electronic
band structures, the inserted carbons were found to add up bands rigidly to
diamond-like C8 while being characterized by metallic-like behavior for ene-C10
and ene-yne-C14.
The identification of distinct charge transport features, deriving from
nontrivial bulk band and surface states, has been a challenging subject in the
field of topological systems. In topological Dirac and Weyl semimetals,
nontrivial conical bands with Fermi-arc surfaces states give rise to negative
longitudinal magnetoresistance due to chiral anomaly effect and unusual
thickness dependent quantum oscillation from Weyl-orbit effect, which were
demonstrated recently in experiments. In this work, we report the experimental
observations of large nonlinear and nonreciprocal transport effects for both
longitudinal and transverse channels in an untwinned Weyl metal of SrRuO$_3$
thin film grown on a SrTiO$_{3}$ substrate. From rigorous measurements with
bias current applied along various directions with respect to the crystalline
principal axes, the magnitude of nonlinear Hall signals from the transverse
channel exhibits a simple sin$\alpha$ dependent at low temperatures, where
$\alpha$ is the angle between bias current direction and orthorhombic
[001]$_{\rm o}$, reaching a maximum when current is along orthorhombic
[1-10]$_{\rm o}$. On the contrary, the magnitude of nonlinear and nonreciprocal
signals in the longitudinal channel attains a maximum for bias current along
[001]$_{\rm o}$, and it vanishes for bias current along [1-10]$_{\rm o}$. The
observed $\alpha$-dependent nonlinear and nonreciprocal signals in longitudinal
and transverse channels reveal a magnetic Weyl phase with an effective Berry
curvature dipole along [1-10]$_{\rm o}$ from surface states, accompanied by 1D
chiral edge modes along [001]$_{\rm o}$.
Strong circularly polarized excitation opens up the possibility to generate
and control effective magnetic fields in solid state systems, e.g., via the
optical inverse Faraday effect or the phonon inverse Faraday effect. While
these effects rely on material properties that can be tailored only to a
limited degree, plasmonic resonances can be fully controlled by choosing proper
dimensions and carrier concentrations. Plasmon resonances provide new degrees
of freedom that can be used to tune or enhance the light-induced magnetic field
in engineered metamaterials. Here we employ graphene disks to demonstrate
light-induced transient magnetic fields from a plasmonic circular current with
extremely high efficiency. The effective magnetic field at the plasmon
resonance frequency of the graphene disks (3.5 THz) is evidenced by a strong
(~1{\deg}) ultrafast Faraday rotation (~ 20 ps). In accordance with reference
measurements and simulations, we estimated the strength of the induced magnetic
field to be on the order of 0.7 T under a moderate pump fluence of about 440 nJ
cm-2.
The topologically engineered complex Schwarzites architecture has been used
to build novel and unique structural components with a high specific strength.
The mechanical properties of these building blocks can be further tuned,
reinforcing with stronger and high surface area architecture. In the current
work, we have built six different Schwarzites structures with multiple
interlocked layers, which we named architecturally interlocked
petal-schwarzites (AIPS). These complex structures are 3D printed into
macroscopic dimensions and compressed using uniaxial compression. The
experimental results show a strong dependency of mechanical response on the
number of layers and topology of the layers. Fully atomistic molecular dynamics
compressive simulations were also carried out, and the results are in good
agreement with experimental observations. They can explain the underlying AIPS
mechanism of high specific strength and energy absorption. The proposed
approach opens a new perspective on developing new 3D-printed materials with
tunable and enhanced mechanical properties.
Synchronization has received a lot of attention from the scientific community
for systems evolving on static networks or higher-order structures, such as
hypergraphs and simplicial complexes. In many relevant real world applications,
the latter are not static but do evolve in time, in this paper we thus discuss
the impact of the time-varying nature of high-order structures in the emergence
of global synchronization.
To achieve this goal we extend the master stability formalism to account, in
a general way, for the additional contributions arising from the time evolution
of the higher-order structure supporting the dynamical systems. The theory is
successfully challenged against two illustrative examples, the Stuart-Landau
nonlinear oscillator and the Lorenz chaotic oscillator.
A stable polymorph of CrO$_2$ is predicted using PBE+U method. The porous
material is isostructural with $\alpha$-MnO$_2$ making it the second transition
metal oxide in sparse hollandite group of materials. However, unlike the
anti-ferromagnetic semiconducting character of the $\alpha$-MnO$_2$, it is
found to be a ferromagnetic half-metal. At Fermi level, the hole pocket has
ample contribution from O-2$p$ orbital, though, the electron pocket is mostly
contributed by Cr-3$d_{xy}$ and Cr-3d$_{x^2-y^2}$. A combination of negative
charge transfer through orbital mixing and extended anti-bonding state near
Fermi level is responsible for the half-metallic ferromagnetic character of the
structure. A comparative study of rutile and hollandite CrO$_2$ and hollandite
MnO$_2$ structures delineate the interplay between structural, electronic and
magnetic properties. The material shows a robust magnetic character under
hydrothermal pressure, as well as, the band topology is conserved under
uniaxial strain. Moderate magneto-crystalline anisotropy is observed and it
shows a correspondence with the anisotropy of elastic constants.
Charge density waves are emergent quantum states that spontaneously reduce
crystal symmetry, drive metal-insulator transitions, and precede
superconductivity. In low-dimensions, distinct quantum states arise, however,
thermal fluctuations and external disorder destroy long-range order. Here we
stabilize ordered two-dimensional (2D) charge density waves through endotaxial
synthesis of confined monolayers of 1T-TaS$_2$. Specifically, an ordered
incommensurate charge density wave (oIC-CDW) is realized in 2D with
dramatically enhanced amplitude and resistivity. By enhancing CDW order, the
hexatic nature of charge density waves becomes observable. Upon heating via
in-situ TEM, the CDW continuously melts in a reversible hexatic process wherein
topological defects form in the charge density wave. From these results, new
regimes of the CDW phase diagram for 1T-TaS$_2$ are derived and consistent with
the predicted emergence of vestigial quantum order.
Twisted van der Waals materials have risen as highly tunable platform for
realizing unconventional superconductivity. Here we demonstrate how a
topological superconducting state can be driven in a twisted graphene
multilayer at a twist angle of approximately 1.6 degrees proximitized to other
2D materials. We show that an encapsulated twisted bilayer subject to induced
Rashba spin-orbit coupling, s-wave superconductivity and exchange field
generates a topological superconducting state enabled by the moire pattern. We
demonstrate a variety of topological states with different Chern numbers highly
tunable through doping, strain and bias voltage. Our proposal does not depend
on a fine tuning of the twist angle, but solely on the emergence of moire
minibands and is applicable for twist angles between 1.3 and 3 degrees. Our
results establish the potential of twisted graphene bilayers to create
artificial topological superconductivity without requiring ultraflat
dispersions.
In this paper we establish a connection between the bulk topological
structure and the magnetic properties of drumhead surface states of nodal loop
semimetals. We identify the magnetic characteristics of the surface states and
compute the system's magnon spectrum by treating electron-electron interactions
on a mean-field level. We draw attention to a subtle connection between a
Lifshitz-like transition of the surface states driven by mechanical distortions
and the magnetic characteristics of the system. Our findings may be
experimentally verified e.g. by spin polarized electron energy loss
spectroscopy of nodal semimetal surfaces.
Due to their non-trivial topology, skyrmions describe deflected trajectories,
which hinders their straight propagation in nanotracks and can lead to their
annihilation at the track edges. This deflection is caused by a gyrotropic
force proportional to the topological charge and the angular momentum density
of the host film. In this article we present clear evidence of the reversal of
the topological deflection angle of skyrmions with the sign of angular momentum
density. We measured the skyrmion trajectories across the angular momentum
compensation temperature (TAC) in GdCo thin films, a rare earth/transition
metal ferrimagnetic alloy. The sample composition was used to engineer the
skyrmion stability below and above the TAC. A refined comparison of their
dynamical properties evidenced a reversal of the skyrmions deflection angle
with the total angular momentum density. This reversal is a clear demonstration
of the possibility of tuning the skyrmion deflection angle in ferrimagnetic
materials and paves the way for deflection-free skyrmion devices.
We study the dynamical behaviour of mesoscopic systems in contact with a
thermal bath, described either via the non-linear Fokker-Planck equation for
the probability distribution function at the ensemble level -- or the
corresponding non-linear Langevin equation at the trajectory level. Our focus
is put on one-dimensional -- or $d$-dimensional isotropic -- systems in
confining potentials, with detailed balance -- fluctuation-dissipation thus
holds, and the stationary probability distribution has the canonical form at
the bath temperature. When quenching the bath temperature to low enough values,
a far-from-equilibrium state emerges that rules the dynamics over a
characteristic intermediate timescale. Such a long-lived state has a
Dirac-delta probability distribution function and attracts all solutions over
this intermediate timescale, in which the initial conditions are immaterial
while the influence of the bath is still negligible. Numerical evidence and
qualitative physical arguments suggest that the above picture extends to
higher-dimensional systems, with anisotropy and interactions.
Quantum oscillations can reveal Fermi surfaces and their topology in solids
and provide a powerful tool for understanding transport and electronic
properties. It is well established that the oscillation frequency maps the
Fermi surface area by Onsager's relation. However, the topological phase
accumulated along the quantum orbit remains difficult to estimate in
calculations, because it includes multiple contributions from the Berry phase,
orbital and spin moments, and also becomes gauge-sensitive for degenerate
states. In this work, we develop a gauge-independent Wilson loop scheme to
evaluate all topological phase contributions and apply it to CsTi$_3$Bi$_5$, an
emerging kagome metal. We find that the spin-orbit coupling dramatically alters
the topological phase compared to the spinless case. Especially, oscillation
phases of representative quantum orbits demonstrate a strong 3D signature
despite their cylinder-like Fermi surface geometry. Our work reveals the Fermi
surface topology of CsTi$_3$Bi$_5$ and paves the way for the theoretical
investigation of quantum oscillations in realistic materials.
The protected surface conduction of topological insulators is in high demand
for the next generation of electronic devices. What is needed to move forward
are robust settings where topological surface currents can be controlled by
simple means, ideally by the application of external stimuli. Surprisingly,
this direction is only little explored. In this work we demonstrate that we can
boost the surface conduction of a topological insulator by both light and
electric field. This happens in a fully controlled way, and the additional
Dirac carriers exhibit ultra-long lifetimes. We provide a comprehensive
understanding, namely that carriers are injected from the bulk to the surface
states across an intrinsic Schottky barrier. We expect this mechanism to be at
play in a broad range of materials and experimental settings.
In 2D semiconductors and insulators, the Chern number of the valence band
Bloch state is an important quantity that has been linked to various material
properties, such as the topological order. We elaborate that the opacity of 2D
materials to circularly polarized light over a wide range of frequencies,
measured in units of the fine structure constant, can be used to extract a
spectral function that frequency-integrates to the Chern number, offering a
simple optical experiment to measure it. This method is subsequently
generalized to finite temperature and locally on every lattice site by a linear
response theory, which helps to extract the Chern marker that maps the Chern
number to lattice sites. The long range response in our theory corresponds to a
Chern correlator that acts like the internal fluctuation of the Chern marker,
and is found to be enhanced in the topologically nontrivial phase. Finally,
from the Fourier transform of the valence band Berry curvature, a nonlocal
Chern marker is further introduced, whose decay length diverges at topological
phase transitions and therefore serves as a faithful indicator of the
transitions, and moreover can be interpreted as a Wannier state correlation
function. The concepts discussed in this work explore multi-faceted aspects of
topology and should help address the impact of system inhomogeneities.
Fractional Dirac materials (FDMs) feature a fractional energy-momentum
relation $E(\vec{k}) \sim |\vec{k}|^{\alpha}$, where $\alpha \; (<1)$ is a real
noninteger number, in contrast to that in conventional Dirac materials with
$\alpha=1$. Here we analyze the effects of short- and long-range Coulomb
repulsions in two- and three-dimensional FDMs. Only a strong short-range
interaction causes nucleation of a correlated insulator that takes place
through a quantum critical point. The universality class of the associated
quantum phase transition is determined by the correlation length exponent
$\nu^{-1}=d-\alpha$ and dynamic scaling exponent $z=\alpha$, set by the band
curvature. On the other hand, the fractional dispersion is protected against
long-range interaction due to its nonanalytic structure. Rather, a linear Dirac
dispersion gets generated under coarse graining, and the associated Fermi
velocity increases logarithmically in the infrared regime, thereby yielding a
two-fluid system. Altogether, correlated FDMs unfold a rich landscape
accommodating unconventional emergent many-body phenomena.
It is predicted that a vortex in a topological superconductor contains a
Majorana zero mode (MZM). The confirmative Majorana signature, i.e., the
$2e^2/h$ quantized conductance, however is easily sabotaged by unavoidable
interruptions, e.g. instrument broadening, non-Majorana signal, and extra
particle channels. We propose to avoid the signal interruption by introducing
disorder-induced dissipation that couples to the tip-sample tunneling. With
dissipation involved, we highlight three features, each of which alone can
provide a strong evidence to identify MZM. Firstly, dissipation suppresses a
finite-energy Caroli-de Gennes-Matricon (CdGM) conductance peak into a valley,
while it does not split MZM zero-bias conductance peak. Secondly, we predict a
dissipation-dependent scaling feature of the zero-bias conductance peak.
Thirdly, the introduced dissipation manifests the MZM signal by suppressing
non-topological CdGM modes. Importantly, the observation of these features does
not require a quantized conductance value $2e^2/h$.
The Lorenz system was derived on the basis of a model of convective
atmospheric motion and may serve as a paradigmatic model for considering a
complex climate system. In this study, we formulated the thermodynamic
efficiency of convective atmospheric motion governed by the Lorenz system by
treating it a non-equilibrium thermodynamic system. Based on the fluid
conservation equations under the Oberbeck-Boussinesq approximation, the work
necessary to maintain atmospheric motion and heat fluxes at the boundaries were
calculated. Using these calculations, the thermodynamic efficiency was
formulated for stationary and chaotic dynamics. The numerical results show
that, for both stationary and chaotic dynamics, the efficiency tends to
increase as the atmospheric motion is driven out of thermodynamic equilibrium
when the Rayleigh number increases. However, it is shown that the efficiency is
upper bounded by the maximum efficiency, which is expressed in terms of the
parameters characterizing the fluid and the convective system. The analysis of
the entropy generation rate was also performed for elucidating the difference
between the thermodynamic efficiency of conventional heat engines and the
present atmospheric heat engine. It is also found that there exists an abrupt
drop in efficiency at the critical Hopf bifurcation point, where the dynamics
change from stationary to chaotic. These properties are similar to those found
previously in Malkus-Lorenz waterwheel system.
Ferroelectricity and metallicity cannot coexist due to the screening effect
of conducting electrons, and a large number of stable monolayers with
1T/1T$^{\prime}$ phase lack spontaneous polarization due to inversion symmetry
(IS). In this work, we have constructed the $\pi$-bilayer structures for
transition metal dichalcogenides (TMD; $M$Te$_2,M =$ Pt, Pd, and Ni) with van
der Waals stacking, where two monolayers are related by $C_{2z}$ rotation, and
have demonstrated that these $\pi$-bilayers are typical ferroelectric metals
(FEMs). The $\pi$-bilayer structure widely exist in nature, such as
1T$^{\prime}$/T$_d$-TMD, $\alpha$-Bi$_4$Br$_4$. The computed vertical
polarization of PtTe$_2$ and MoTe$_2$ $\pi$-bilayers are 0.46 and 0.25 pC/m,
respectively. We show that the switching of polarization can be realized
through interlayer sliding, which only requires crossing a low energy barrier.
The interlayer vdW charge transfer is the source of both vertical polarization
and metallicity, and these properties are closely related to the spatially
extended Te-$p_z$ orbital. Finally, we reveal that electron doping can
significantly adjust the vertical polarization of these FEMs in both magnitude
and direction. Our findings introduce a new class of FEMs, which have potential
applications in functional nanodevices such as ferroelectric tunneling junction
and nonvolatile ferroelectric memory.
We study the dynamical quantum phase transition (DQPT) in the multi-band
Bloch Hamiltonian of the one-dimensional periodic Kitaev model following a
quench from a Bloch band. Using a combination of dynamical free energy and
Pancharatnam geometric phase analysis, we demonstrate that the critical times
of DQPTs are not periodically spaced due to the deviation of critical momentum
caused by the multi-band effect, which differs from the results found in
two-band models. We propose a geometric interpretation to explain the
non-uniformly spaced critical times. Additionally, we clarify the conditions
necessary for the occurrence of the DQPT in the multi-band Bloch Hamiltonian.
We find that only the quench from the Bloch states, which causes the band gap
to collapse at the critical point, can induce a DQPT after crossing the quantum
phase transition. Otherwise, the DQPT will not occur. Furthermore, we confirm
that the dynamical topological order parameter, which is defined by the winding
number of the Pancharatnam geometric phase, is not quantized due to the
periodic modulation but still displays discontinuous jumps at the critical
times of DQPTs. In addition, we extend our theory to mixed-state DQPT and find
that the DQPT is absent at non-zero temperatures.
The triple phase transitions or simultaneous transitions of three different
phases, namely topological, parity-time (PT) symmetry breaking, and
metal-insulator transitions, are observed in an extension of PT symmetric
non-Hermitian Aubry-Andr\'e-Harper model. In this model, besides non-Hermitian
complex quasi-periodic onsite potential, non-Hermiticity is also included in
the nearest-neighbor hopping terms. Moreover, the nearest-neighbor hopping
terms is also quasi-periodic. The presence of two non-Hermitian parameters, one
from the onsite potential and another one from the hopping part, ensures PT
symmetry transition in the system. In addition, tuning these two non-Hermitian
parameters, we identify a parameters regime, where we observe the triple phase
transition. Following some recent studies, an electrical circuit based
experimental realization of this model is also discussed.
The K\"ahler-Dirac fermion, recognized as an elegant geometric approach,
offers an alternative to traditional representations of relativistic fermions.
Recent studies have demonstrated that symmetric mass generation (SMG) can
precisely occur with two copies of K\"ahler-Dirac fermions across any spacetime
dimensions. This conclusion stems from the study of anomaly cancellation within
the fermion system. Our research provides an alternative understanding of this
phenomenon from a condensed matter perspective, by associating the interacting
K\"ahler-Dirac fermion with the boundary of bosonic symmetry-protected
topological (SPT) phases. We show that the low-energy bosonic fluctuations in a
single copy of the K\"ahler-Dirac fermion can be mapped to the boundary modes
of a $\mathbb{Z}_2$-classified bosonic SPT state, protected by an inversion
symmetry universally across all dimensions. This implies that two copies of
K\"ahler-Dirac fermions can always undergo SMG through interactions mediated by
these bosonic modes. This picture aids in systematically designing SMG
interactions for K\"ahler-Dirac fermions in any dimension. We present the exact
lattice Hamiltonian of these interactions and validate their efficacy in
driving SMG.

Date of feed: Tue, 11 Jul 2023 00:30:00 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+) **Effects of anisotropy on the high field magnetoresistance of Weyl semimetals. (arXiv:2307.03772v1 [cond-mat.mes-hall])**

A. S. Dotdaev, Ya. I. Rodionov, K. I. Kugel, B. A. Aronzon

**The topological Kondo model out of equilibrium. (arXiv:2307.03773v1 [cond-mat.str-el])**

Matteo M. Wauters, Chia-Min Chung, Lorenzo Maffi, Michele Burrello

**Chirality probe of twisted bilayer graphene in the linear transport regime. (arXiv:2307.03779v1 [cond-mat.mes-hall])**

D. A. Bahamon, G. Gómez-Santos, D. K. Efetov, T. Stauber

**Localization and interaction of interlayer excitons in MoSe$_2$/WSe$_2$ heterobilayers. (arXiv:2307.03842v1 [cond-mat.mes-hall])**

Hanlin Fang, Qiaoling Lin, Yi Zhang, Joshua Thompson, Sanshui Xiao, Zhipei Sun, Ermin Malic, Saroj Dash, Witlef Wieczorek

**Spectroscopic evidence for topological band structure in FeTe$_{0.55}$Se$_{0.45}$. (arXiv:2307.03861v1 [cond-mat.str-el])**

Y.-F. Li, S.-D. Chen, M. Garcia-Diez, M. I. Iraola, H. Pfau, Y.-L. Zhu, Z.-Q. Mao, T. Chen, M. Yi, P.-C. Dai, J.A. Sobota, M. Hashimoto, M. G. Vergniory, D.-H. Lu, Z.-X. Shen

**Revealing intrinsic domains and fluctuations of moir\'e magnetism by a wide-field quantum microscope. (arXiv:2307.03876v1 [cond-mat.mes-hall])**

Mengqi Huang, Zeliang Sun, Gerald Yan, Hongchao Xie, Nishkarsh Agarwal, Gaihua Ye, Suk Hyun Sung, Hanyi Lu, Jingcheng Zhou, Shaohua Yan, Shangjie Tian, Hechang Lei, Robert Hovden, Rui He, Hailong Wang, Liuyan Zhao, Chunhui Rita Du

**Enhanced Strong Coupling between Spin Ensemble and non-Hermitian Topological Edge States. (arXiv:2307.03944v1 [quant-ph])**

Jie Qian, Jie Li, Shi-Yao Zhu, J. Q. You, Yi-Pu Wang

**Transport properties in gapped graphene through magnetic barrier in a laser field. (arXiv:2307.03999v1 [cond-mat.mes-hall])**

Rachid El Aitouni, Miloud Mekkaoui, Ahmed Jellal, Michael Schreiber

**Correlation-induced symmetry-broken states in large-angle twisted bilayer graphene on MoS2. (arXiv:2307.04170v1 [cond-mat.mes-hall])**

Kaihui Li, Long-Jing Yin, Chenglong Che, Xueying Liu, Yulong Xiao, Songlong Liu, Qingjun Tong, Si-Yu Li, Anlian Pan

**Optical Properties of Charged Defects in Monolayer MoS$_2$. (arXiv:2307.04268v1 [cond-mat.mtrl-sci])**

Martik Aghajanian, Arash A. Mostofi, Johannes Lischner

**Phononic transport in 1T prime-MoTe2: anisotropic structure with an isotropic lattice thermal conductivity. (arXiv:2307.04278v1 [cond-mat.mtrl-sci])**

Xiangyue Cui, Xuefei Yan, Bowen Wang, Yongqing Cai

**Weyl semimetallic state in the Rashba-Hubbard model. (arXiv:2307.04307v1 [cond-mat.str-el])**

Katsunori Kubo

**Quasicrystalline second-order topological semimetals. (arXiv:2307.04334v1 [cond-mat.mes-hall])**

Rui Chen, Bin Zhou, Dong-Hui Xu

**Phase Diagram and Crossover Phases of Topologically Ordered Graphene Zigzag Nanoribbons: Role of Localization Effects. (arXiv:2307.04352v1 [cond-mat.str-el])**

Hoang Anh Le, In Hwan Lee, Young Heon Kim, S.-R. Eric Yang

**Novel Carbon allotropes with mixed hybridizations: ene-C10, and ene-yne-C14. Crystal chemistry and first principles investigations. (arXiv:2307.04359v1 [cond-mat.mtrl-sci])**

Samir F. Matar

**Nonlinear and nonreciprocal transport effects in untwinned thin films of ferromagnetic Weyl metal SrRuO$_3$. (arXiv:2307.04482v1 [cond-mat.mes-hall])**

Uddipta Kar (1 and 6), Elisha Cho-Hao Lu (1), Akhilesh Kr. Singh (1) P. V. Sreenivasa Reddy (2), Youngjoon Han (4), Xinwei Li (4), Cheng-Tung Cheng (1), Song Yang (5), Chun-Yen Lin (5), I-Chun Cheng (8), Chia-Hung Hsu (5), D. Hsieh (4), Wei-Cheng Lee (3), Guang-Yu Guo (2 and 7), Wei-Li Lee (1) ((1) Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan, (2) Department of Physics, National Taiwan University, Taipei, Taiwan, (3) Department of Physics, Applied Physics and Astronomy, Binghamton University, Binghamton, New York, USA, (4) Department of Physics, California Institute of Technology, Pasadena, California, USA, (5) Scientific Research Division, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, (6) Nano Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Taiwan University, Taipei, Taiwan, (7) Physics Division, National Center for Theoretical Sciences, Taipei, Taiwan, (8) Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan)

**Strong transient magnetic fields induced by THz-driven plasmons in graphene disks. (arXiv:2307.04512v1 [cond-mat.mes-hall])**

Jeong Woo Han, Pavlo Sai, Dmytro But, Ece Uykur, Stephan Winnerl, Gagan Kumar, Matthew L. Chin, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, Thomas E. Murphy, Wojciech Knap, Martin Mittendorff

**Topological engineered 3D printing of Architecturally Interlocked Petal-Schwarzites. (arXiv:2307.04540v1 [cond-mat.mtrl-sci])**

Rushikesh S. Ambekar, Leonardo V. Bastos, Douglas S. Galvao, Chandra S. Tiwary, Cristiano F. Woellner

**Global synchronization on time-varying higher-order structures. (arXiv:2307.04568v1 [cond-mat.stat-mech])**

Md Sayeed Anwar, Dibakar Ghosh, Timoteo Carletti

**Porous CrO$_2$: a ferromagnetic half-metallic member in sparse hollandite oxide family. (arXiv:2307.04584v1 [cond-mat.mtrl-sci])**

Sujoy Datta

**Endotaxial Stabilization of 2D Charge Density Waves with Long-range Order. (arXiv:2307.04587v1 [cond-mat.mtrl-sci])**

Suk Hyun Sung, Nishkarsh Agarwal, Ismail El Baggari, Yin Min Goh, Patrick Kezer, Noah Schnitzer, Yu Liu, Wenjian Lu, Yuping Sun, Lena F. Kourkoutis, John T. Heron, Kai Sun, Robert Hovden

**Moire-enabled artificial topological superconductivity in twisted bilayer graphene. (arXiv:2307.04605v1 [cond-mat.mes-hall])**

Maryam Khosravian, Elena Bascones, Jose L. Lado

**Surface magnon spectra of nodal loop semimetals. (arXiv:2307.04620v1 [cond-mat.mes-hall])**

Assem Alassaf, János Koltai, László Oroszlány

**Reversal of the skyrmion topological deflection across ferrimagnetic angular momentum compensation. (arXiv:2307.04669v1 [cond-mat.mtrl-sci])**

L. Berges, R. Weil, A. Mougin, J. Sampaio

**Non-equilibrium attractor for non-linear stochastic dynamics. (arXiv:2307.04728v1 [cond-mat.stat-mech])**

A. Patrón, B. Sánchez-Rey, E. Trizac, A. Prados

**Quantum oscillations with topological phases in a kagome metal CsTi$_3$Bi$_5$. (arXiv:2307.04750v1 [cond-mat.str-el])**

Yongkang Li, Hengxin Tan, Binghai Yan

**Switching on surface conduction in a topological insulator. (arXiv:2010.10620v2 [cond-mat.mtrl-sci] UPDATED)**

M. Taupin, G. Eguchi, M. Luznik, A. Steiger-Thirsfeld, Y. Ishida, K. Kuroda, S. Shin, A. Kimura, S. Paschen

**Probing Chern number by opacity and topological phase transition by a nonlocal Chern marker. (arXiv:2207.00016v4 [cond-mat.str-el] UPDATED)**

Paolo Molignini, Bastien Lapierre, R. Chitra, Wei Chen

**Correlated Fractional Dirac Materials. (arXiv:2207.09449v3 [cond-mat.str-el] UPDATED)**

Bitan Roy, Vladimir Juricic

**Theoretical proposal to obtain strong Majorana evidence from scanning tunneling spectroscopy of a vortex with a dissipative environment. (arXiv:2209.14006v3 [cond-mat.supr-con] UPDATED)**

Gu Zhang, Chuang Li, Geng Li, Can-Li Song, Xin Liu, Fu-Chun Zhang, Dong E. Liu

**Thermodynamic efficiency of atmospheric motion governed by Lorenz system. (arXiv:2302.03887v2 [nlin.CD] UPDATED)**

Zhen Li, Yuki Izumida

**Ferroelectric metals in 1T/1T'-phase transition metal dichalcogenides bilayers. (arXiv:2303.14343v2 [cond-mat.mtrl-sci] UPDATED)**

Haohao Sheng, Zhijun Wang

**Aperiodic dynamical quantum phase transitions in multi-band Bloch Hamiltonian and its origin. (arXiv:2303.15966v3 [cond-mat.stat-mech] UPDATED)**

Kaiyuan Cao, Hao Guo, Guangwen Yang

**Topological triple phase transition in non-Hermitian quasicrystals with complex asymmetric hopping. (arXiv:2306.14987v2 [cond-mat.dis-nn] UPDATED)**

Shaina Gandhi, Jayendra N. Bandyopadhyay

**Symmetric Mass Generation of K\"ahler-Dirac Fermions from the Perspective of Symmetry-Protected Topological Phases. (arXiv:2306.17420v4 [cond-mat.str-el] UPDATED)**

Yuxuan Guo, Yi-Zhuang You

Found 8 papers in prb We study the Andreev reflections and the quantum transport in the proximitized graphene/superconductor junction. The proximitized graphene possesses the pseudospin staggered potential and the intrinsic spin-orbit coupling induced by substrate, which are responsible for the spin-valley dependent doub… We investigate the role of the Bloch functions and superconducting gap symmetries on the formation and properties of impurity-induced resonances in a two-dimensional superconductor, and elucidate their manifestation in scanning tunneling spectra. We use and extend a recently developed scattering app… Resistive-switching-based memory is a popular research area for majorly neuromorphic, nonvolatile memory design and in-memory computing. ${\mathrm{Pr}}_{1−x}{\mathrm{Ca}}_{x}{\mathrm{MnO}}_{\text{3}}$ [$\mathrm{PCMO}(x$)] is one of the most explored perovskite materials for resistive random access m… While local unitary transformations are used for identifying quantum states that are in the same topological class, nonlocal unitary transformations are also important for studying the transition between different topological classes. In particular, it is an important task to find suitable nonlocal … We study the linear, second-order nonlinear (NL) current and voltage responses of a two-dimensional gapped semi-Dirac system with merging Dirac nodes along the $x$ direction under the influence of a weak magnetic field $(B)$, using the semiclassical Boltzmann formalism. We investigate the effect of … Diamond is a solid-state platform used to develop quantum technologies, but it has been a long-standing problem that the current understanding of quantum states of nitrogen vacancy (NV) centers in diamond is mostly limited to single-electron pictures. Here, we combine the full configuration interact… Motivated by the recent experimental detection of superconductivity in Bernal bilayer (AB) and rhombohedral trilayer (ABC) graphene, we study the emergence of superconductivity in multilayer graphene based on a Kohn-Luttinger (KL) -like mechanism in which the pairing glue is the screened Coulomb int… The discovery of chiral anomaly in Weyl semimetals, the nonconservation of chiral charge and energy across two opposite chirality Weyl nodes, has sparked immense interest in understanding its impact on various physical phenomena. Here, we demonstrate the existence of electrical, thermal, and gravita…

Date of feed: Tue, 11 Jul 2023 03:17:05 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]+) **Spin-valley dependent double Andreev reflections in the proximitized graphene/superconductor junction**

Lu Gao, Qiang Cheng, and Qing-Feng Sun

Author(s): Lu Gao, Qiang Cheng, and Qing-Feng Sun

[Phys. Rev. B 108, 024504] Published Mon Jul 10, 2023

**Tunneling spectra of impurity states in unconventional superconductors**

P. O. Sukhachov, Felix von Oppen, and L. I. Glazman

Author(s): P. O. Sukhachov, Felix von Oppen, and L. I. Glazman

[Phys. Rev. B 108, 024505] Published Mon Jul 10, 2023

**Accurate prediction of migration barrier of oxygen vacancy in ${\mathrm{PrMnO}}_{3}$ and ${\mathrm{CaMnO}}_{3}$: Explaining experimental results with density functional theory**

Shashank V. Inge, Adityanarayan Pandey, Udayan Ganguly, and Amrita Bhattacharya

Author(s): Shashank V. Inge, Adityanarayan Pandey, Udayan Ganguly, and Amrita Bhattacharya

[Phys. Rev. B 108, 035114] Published Mon Jul 10, 2023

**Layer-by-layer disentangling two-dimensional topological quantum codes**

Mohammad Hossein Zarei and Mohsen Rahmani Haghighi

Author(s): Mohammad Hossein Zarei and Mohsen Rahmani Haghighi

[Phys. Rev. B 108, 035116] Published Mon Jul 10, 2023

**Nonlinear magnetotransport in a two-dimensional system with merging Dirac points**

Ojasvi Pal, Bashab Dey, and Tarun Kanti Ghosh

Author(s): Ojasvi Pal, Bashab Dey, and Tarun Kanti Ghosh

[Phys. Rev. B 108, 035203] Published Mon Jul 10, 2023

**Multiconfigurational nature of electron correlation within nitrogen vacancy centers in diamond**

Yilin Chen, Tonghuan Jiang, Haoxiang Chen, Erxun Han, Ali Alavi, Kuang Yu, Enge Wang, and Ji Chen

Author(s): Yilin Chen, Tonghuan Jiang, Haoxiang Chen, Erxun Han, Ali Alavi, Kuang Yu, Enge Wang, and Ji Chen

[Phys. Rev. B 108, 045111] Published Mon Jul 10, 2023

**Charge fluctuations, phonons, and superconductivity in multilayer graphene**

Ziyan Li, Xueheng Kuang, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Zhen Zhan, Shengjun Yuan, and Francisco Guinea

Author(s): Ziyan Li, Xueheng Kuang, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Zhen Zhan, Shengjun Yuan, and Francisco Guinea

[Phys. Rev. B 108, 045404] Published Mon Jul 10, 2023

**Chiral anomalies in three-dimensional spin-orbit coupled metals: Electrical, thermal, and gravitational anomalies**

Sunit Das, Kamal Das, and Amit Agarwal

Author(s): Sunit Das, Kamal Das, and Amit Agarwal

[Phys. Rev. B 108, 045405] Published Mon Jul 10, 2023

Found 1 papers in prl In turbulent flows, kinetic energy is transferred from large spatial scales to small ones, where it is converted to heat by viscosity. For strong turbulence, i.e., high Reynolds numbers, Kolmogorov conjectured in 1941 that this energy transfer is dominated by inertial forces at intermediate spatial …

Date of feed: Tue, 11 Jul 2023 03:17:04 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]+) **Universal Velocity Statistics in Decaying Turbulence**

Christian Küchler, Gregory P. Bewley, and Eberhard Bodenschatz

Author(s): Christian Küchler, Gregory P. Bewley, and Eberhard Bodenschatz

[Phys. Rev. Lett. 131, 024001] Published Mon Jul 10, 2023

Found 2 papers in pr_res Two spatially separated magnetic impurities coupled to itinerant electrons give rise to a dynamically generated exchange (RKKY) inter-impurity interaction that competes with the individual Kondo screening of the impurities. It has been recently shown by Yevtushenko and Yudson [Phys. Rev. Lett. Fractional Dirac materials, featuring a fractional energy-momentum relation, can either manifest unconventional quantum critical phenomena driven by local Hubbard-like interactions or harbor a two-fluid quantum system, with a conventional Dirac-liquid component, tuned by the long-range Coulomb interaction.

Date of feed: Tue, 11 Jul 2023 03:17:05 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]+) **RKKY to Kondo crossover in helical edge of a topological insulator**

Pol Alonso-Cuevillas Ferrer, Oleg M. Yevtushenko, and Andreas Weichselbaum

Author(s): Pol Alonso-Cuevillas Ferrer, Oleg M. Yevtushenko, and Andreas Weichselbaum**120**, …

[Phys. Rev. Research 5, 033016] Published Mon Jul 10, 2023

**Correlated fractional Dirac materials**

Bitan Roy and Vladimir Juričić

Author(s): Bitan Roy and Vladimir Juričić

[Phys. Rev. Research 5, L032002] Published Mon Jul 10, 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]+) **Observation of flat band, Dirac nodal lines and topological surface states in Kagome superconductor CsTi3Bi5**

< author missing >