Found 50 papers in cond-mat We study the simplest Lam\'e magnetic superlattice in graphene, finding its
allowed and forbidden energy bands and band-edge states explicitly. Then, we
design quasiperiodic magnetic superlattices supporting bound states using
Darboux transformations. This technique enables us to add any finite number of
bound states, which we exemplify with the most straightforward cases of one and
two bound states in the designed spectrum. The topics of magnetic superlattices
and domain walls in gapped graphene turn out to be connected by a unitary
transformation in the limit of significantly large oscillation periods. We show
that the generated quasiperiodic magnetic superlattices are also linked to
domain walls, with the bound states keeping their nature in such a limit.
We study the entanglement structure of Abelian topological order described by
$p$-form BF theory in arbitrary dimensions. We do so directly in the low-energy
topological quantum field theory by considering the algebra of topological
surface operators. We define two appropriate notions of subregion operator
algebras which are related by a form of electric-magnetic duality. To each
subregion algebra we assign an entanglement entropy which we coin essential
topological entanglement. This is a refinement to the traditional topological
entanglement entropy. It is intrinsic to the theory, inherently finite,
positive, and sensitive to more intricate topological features of the state and
the entangling region. This paper is the first in a series of papers
investigating entanglement and topological order in higher dimensions.
The interplay between topology and electronic correlation effects offers a
rich avenue for discovering emergent quantum phenomena in condensed matter
systems. In this work, starting from the Weyl-Hubbard model, we investigate the
quantum Hall effect to explore the consequence of onsite Hubbard repulsion on
nontrivial Weyl band topology in the presence of an external magnetic field.
Within the Gutzwiller projected wavefunction method, we find the system to
undergo multiple topological phase transitions, including two distinct Weyl
phases with a different number of Weyl node pairs and a trivial narrow band
insulator, by tuning on-site Coulomb interaction. Interestingly, these two Weyl
phases can be identified by the sign of their chiral Landau levels. The
possible experimental signature of these topological phases and correlation
effects is provided by the magnetic-field dependent quantum Hall conductivity
within the Kubo response theory.
Motivated by scanning tunnelling microscopy experiments on AV$_3$Sb$_5$ (A =
Cs, Rb, K) that revealed periodic real-space modulation of electronic states at
low energies, I show using model calculations that a tripple-$\bf Q$ chiral
pair density wave (CPDW) is generated in the superconducting state by a charge
order of $2a\! \times \!2a$ superlattice periodicity, intertwined with a
time-reversal symmetry breaking orbital loop current. The CPDW correlation
survives even when the long-range superconducting phase coherence is diminished
by a magnetic field or temperature. The superconducting critical field is
enhanced beyond the Chandrasekhar-Clogston limit, pointing to a rare quantum
state above the superconducting transition. The presented results suggest that
the CPDW can be regarded as the origin of the pseudogap observed near the
superconducting transition.
Within the method of spectral moments it is possible to construct the
spectral function of a many-electron system from the first $2P$ spectral
moments ($P=1,2,3,\dots$). The case $P=1$ corresponds to standard Kohn-Sham
density functional theory (KS-DFT). Taking $P>1$ allows us to consider
additional important properties of the uniform electron gas (UEG) in the
construction of suitable moment potentials for moment-functional based spectral
density-functional theory (MFbSDFT). For example, the quasiparticle
renormalization factor $Z$, which is not explicitly considered in KS-DFT, can
be included easily. In the 4-pole approximation of the spectral function of the
UEG (corresponding to $P=4$) we can reproduce the momentum distribution, the
second spectral moment, and the charge response acceptably well, while a
treatment of the UEG by KS-DFT reproduces from these properties only the charge
response. For weakly and moderately correlated systems we may reproduce the
most important aspects of the 4-pole approximation by an optimized two-pole
model, which leaves away the low-energy satellite band. From the optimized
two-pole model we extract \textit{parameter-free universal} moment potentials
for MFbSDFT, which improve the description of the bandgaps in Si, SiC, BN, MgO,
CaO, and ZnO significantly.
Control of excitons in transition metal dichalcogenides (TMDCs) and their
heterostructures is fundamentally interesting for tailoring light-matter
interactions and exploring their potential applications in high-efficiency
optoelectronic and nonlinear photonic devices. While both intra- and interlayer
excitons in TMDCs have been heavily studied, their behavior in the quantum
tunneling regime, in which the TMDC or its heterostructure is optically excited
and concurrently serves as a tunnel junction barrier, remains unexplored. Here,
using the degree of freedom of a metallic probe in an atomic force microscope,
we investigated both intralayer and interlayer excitons dynamics in TMDC
heterobilayers via locally controlled junction current in a finely tuned
sub-nanometer tip-sample cavity. Our tip-enhanced photoluminescence
measurements reveal a significantly different exciton-quantum plasmon coupling
for intralayer and interlayer excitons due to different orientation of the
dipoles of the respective e-h pairs. Using a steady-state rate equation fit, we
extracted field gradients, radiative and nonradiative relaxation rates for
excitons in the quantum tunneling regime with and without junction current. Our
results show that tip-induced radiative (nonradiative) relaxation of intralayer
(interlayer) excitons becomes dominant in the quantum tunneling regime due to
the Purcell effect. These findings have important implications for near-field
probing of excitonic materials in the strong-coupling regime.
The design of specified nonlinear mechanical responses into a structure or
material is a highly sought after capability, which would have a significant
impact in areas such as wave tailoring in metamaterials, impact mitigation,
soft robotics, and biomedicine. Here, we present a topology optimization
approach to design structures for desired nonlinear behavior, wherein we
formulate the problem in such a way as to decouple the nonlinear response from
the stiffness. We show results across different classes of nonlinearity while
achieving a high degree of precision. The approach enables access to previously
difficult to design for, or hitherto unachieved, nonlinear behavior via
optimized structures, which can furthermore be incorporated as unit cells of
designer materials with tailored nonlinear properties.
A wide class of materials with different crystal and electronic structures
from quasi-two-dimensional unconventional superconductors (cuprates,
nickelates, ferropnictides/chalcogenides, ruthenate SrRuO$_4$), 3D systems as
manganites RMnO$_3$, ferrates (CaSr)FeO$_3$, nickelates RNiO$_3$, to silver
oxide AgO are based on Jahn-Teller $3d$ and $4d$ ions. These unusual materials
called Jahn-Teller (JT) magnets are characterized by an extremely rich variety
of phase states from non-magnetic and magnetic insulators to unusual metallic
and superconducting states. The unconventional properties of the JT-magnets can
be related to the instability of their highly symmetric Jahn-Teller
"progenitors" with the ground orbital $E$-state to charge transfer with
anti-Jahn-Teller $d$-$d$ disproportionation and the formation of a system of
effective local composite spin-singlet or spin-triplet, electronic or hole
$S$-type bosons moving in a non-magnetic or magnetic lattice. We consider
specific features of the anti-JT-disproportionation reaction, properties of the
electron-hole dimers, possible phase states of JT-magnets, effective
Hamiltonians for single- and two-band JT-magnets, and present a short overview
of physical properties for actual JT-magnets.
The co-existence of ferromagnetism and superconductivity becomes possible
through unconventional pairing in the superconducting state. Such materials are
exceedingly rare in solid-state systems but are promising platforms to explore
topological phases, such as Majorana bound states. Theoretical investigations
date back to the late 1950s, but only a few systems have so far been
experimentally identified as potential hosts. Here, we show that
atomically-thin niobium diselenide (NbSe$_2$) intercalated with dilute cobalt
atoms spontaneously displays ferromagnetism below the superconducting
transition temperature ($T_c$). We elucidate the origin of this phase by
constructing a magnetic tunnel junction that consists of cobalt and
cobalt-doped niobium diselenide (Co-NbSe$_2$) as the two ferromagnetic
electrodes, with an ultra-thin boron nitride as the tunnelling barrier. At a
temperature well below $T_c$, the tunnelling magnetoresistance shows a bistable
state, suggesting a ferromagnetic order in Co-NbSe$_2$. We propose a RKKY
exchange coupling mechanism based on the spin-triplet superconducting order
parameter to mediate such ferromagnetism. We further perform non-local lateral
spin valve measurements to confirm the origin of the ferromagnetism. The
observation of Hanle precession signals show spin diffusion length up to
micrometres below Tc, demonstrating an intrinsic spin-triplet nature in
superconducting NbSe$_2$. Our discovery of superconductivity-mediated
ferromagnetism opens the door to an alternative design of ferromagnetic
superconductors
Vertically stacked two-dimensional (2D) graphene-based van der Waals (vdW)
heterostructures have emerged as the technological materials for electronic and
optoelectronic device applications. In this regard, for the first time, we
systematically predicted the electronic and optical properties of CX/G (X = S,
Se and Te; G = graphene) heterostructures under biaxial strain and spin orbit
coupling (SOC) by first-principles calculations. Strain is induced by applying
mechanical stress to the heterostructures, while SOC arises due to the
interaction between the electron spin and its orbital motion. The electronic
property calculations reveal that all three heterostructures exhibit indirect
semiconducting nature with a narrow bandgap of 0.47-0.62 eV and remain indirect
under compressive and tensile strains. Strong band splitting of 78.4 meV has
been observed in the conduction band edge of CTe/G heterostructure in the
presence of SOC due to the lack of an inversion center attributed to the large
hole effective mass. Under compressive strain, the p-type of Schottky contact
of CX/G heterostructures is converted into p-type Ohmic contact because of
nearly negligible Schottky barrier height. Further, the optical property
assessment reveals red and blue shifts in the absorption peak of CX/G
heterostructures with regard to tensile and compressive strains, respectively.
Despite this, the CTe/G heterostructure achieves a remarkable high {\eta} of
24.53% in the strain-free case whereas, it reaches to 28.31% with 4%
compressive strain, demonstrating the potential for solar energy conversion
device applications. Our findings suggest that CX/G heterostructures could be
promising candidates for high-performance optoelectronic devices.
We study the topology and localization properties of a generalized
Su-Schrieffer-Heeger (SSH) model with a quasi-periodic modulated hopping. It is
found that the interplay of off-diagonal quasi-periodic modulations can induce
topological Anderson insulator (TAI) phases and reentrant topological Anderson
insulator (RTAI), and the topological phase boundaries can be uncovered by the
divergence of the localization length of the zero-energy mode. In contrast to
the conventional case that the TAI regime emerges in a finite range with the
increase of disorder, the TAI and RTAI are robust against arbitrary modulation
amplitude for our system. Furthermore, we find that the TAI and RTAI can induce
the emergence of reentrant localization transitions. Such an interesting
connection between the reentrant localization transition and the TAI/RTAI can
be detected from the wave-packet dynamics in cold atom systems by adopting the
technique of momentum-lattice engineering.
The non-Hermitian skin effect (NHSE) undermines the conventional
bulk-boundary correspondence (BBC) since it results in a distinct bulk spectrum
in open-boundary systems compared to the periodic counterpart. Using the
non-Hermitian (NH) Su-Schrieffer-Heeger (SSH) model as an example, we propose
an intuitive approach, termed ``doubling and swapping" method, to restore the
BBC. Explicitly, we construct a modified system by swapping the asymmetric
intracell hoppings in every second primitive unit cell, such that it has
double-sized unit cells compared to the NH SSH model and is free of NHSE.
Importantly, the modified system and the NH SSH chain exhibit identical spectra
under open boundary conditions (OBC). As a result, the modified system can
serve as the valid bulk for defining topological invariants that correctly
predicts edge states and topological phase transitions. The basic principle is
applicable to many other systems such as the non-Hermitian Creutz ladder model.
Furthermore, we extend the study to disordered systems in which the asymmetric
hoppings are randomly swapped. We show that two types of winding numbers can be
defined to account for the NHSE and topological edge states, respectively.
We show that any two-dimensional system with a non-zero \textit{symmetric}
off-diagonal component of the resistance matrix, $R_{xy}=R_{yx} \neq 0$, must
have the in-plane rotational symmetry broken down to $C_2$. Such a resistance
response is Ohmic, and is different from the Hall response which is the
\textit{anti-symmetric} part of the resistance tensor, $R_{xy}=-R_{yx}$, is
rotationally symmetric in the 2D plane, and requires broken time-reversal
symmetry. We show how a minute amount of strain due to lattice mismatch - less
than $1 \%$ - can produce a vastly exaggerated symmetric off-diagonal response
- $\frac{R_{xy}}{R_{xx}} \sim 20\%$ - because of the momentum matching
constraints in a Moire system. Our results help explain an important new
transport experiment on graphene-WSe$_2$ heterostructures, as well as are
relevant for other experimental systems with rotational symmetry broken down to
$C_2$, such as nematic systems and Kagome charge density waves.
The Bloch electron energy spectrum of a crystalline solid is determined by
the underlying lattice structure at the atomic level. In a 2-dimensional (2d)
crystal it is possible to impose a superlattice with nanometer-scale
periodicity, allowing to tune the fundamental Bloch electron spectrum, and
enabling novel physical properties which are not accessible in the original
crystal. In recent years, a top-down approach for creating 2d superlattices on
monolayer graphene by means of nanopatterned electric gates has been studied,
which allows the formation of isolated energy bands and Hofstadter Butterfly
physics in quantizing magnetic fields. Within this approach, however, evidence
of electron correlations which drive many problems at the forefront of physics
research remains to be uncovered. In this work we demonstrate signatures of a
correlated insulator phase in Bernal-stacked bilayer graphene (BLG) modulated
by a gate-defined superlattice potential, manifested as a set of resistance
peaks centered at carrier densities of integer multiples of a single electron
per unit cell of the superlattice potential. We associate the correlated
insulator phase to the formation of flat energy bands due to the superlattice
potential combined with inversion symmetry breaking. Inducing correlated
electron phases with nanopatterning defined electric gates paves the way to
custom-designed superlattices with arbitrary geometries and symmetries for
studying band structure engineering and strongly correlated electrons in 2d
materials.
Higher-order topological superconductors and superfluids have triggered a
great deal of interest in recent years. While Majorana corner or hinge states
have been studied intensively, whether superconductors and superfluids, being
topological or trivial, host higher-order topological Bogoliubov excitations
remains elusive. In this work, we propose that Bogoliubov corner excitations
can be driven from a trivial conventional $s$-wave superfluid through
mirror-symmetric local potentials. The topological Bogoliubov excited modes
originate from the nontrivial Bogoliubov excitation bands. These modes are
protected by mirror symmetry and robust against mirror-symmetric perturbations
as long as the Bogoliubov energy gap remains open. Our work provides new
insight into higher-order topological excitation states in superfluids and
superconductors.
The research of high energy and nuclear physics requires high power
accelerators, and the superconducting radio-frequency (SRF) cavity is regarded
as their engine. Up to now, the widely used practical and effective material
for making the SRF cavity is pure Nb. The key parameter that governs the
efficiency and the accelerating field (E_acc) of a SRF cavity is the lower
critical field Hc1. Here, we report a significant improvement of Hc1 for a new
type of alloy, Nb_{1-x}Y_x fabricated by the arc melting technique.
Experimental investigations with multiple tools including x-ray diffraction,
scanning electron microscopy, resistivity and magnetization are carried out,
showing that the samples have good quality and a 30%-60% enhancement of Hc1.
First principle calculations indicate that this improvement is induced by the
delicate tuning of a Lifshitz transition of a Nb derivative band near the Fermi
energy, which increases the Ginzburg-Landau parameter and Hc1. Our results may
trigger a replacement of the basic material and thus a potential revolution for
manufacturing the SRF cavity.
A potential application of two-dimensional (2D) MXenes, such as Ti2CTx and
Ti3C2Tx, is energy storage devices, such as supercapacitors, batteries, and
hydride electrochemical cells, where intercalation of ions between the 2D
layers is considered as a charge carrier. Electrochemical cycling
investigations in combination with Ti 1s X-ray absorption spectroscopy (XAS)
have therefore been performed with the objective to study oxidation state
changes during potential variations. In some of these studies Ti3C2Tx has shown
main edge shifts in the Ti 1s X-ray absorption near-edge structure (XANES).
Here we show that these main edge shifts originate from the Ti 4p orbital
involvement in the bonding between the surface Ti and the termination species
at the fcc-sites. The study further shows that the t2g-eg crystal field
splitting (10Dq) observed in the pre-edge absorption region indicate weaker
Ti-C bonds in Ti2CTx and Ti3C2Tx compared to TiC and the corresponding MAX
phases. The results from this study provide information necessary for improved
electronic modeling and subsequently a better description of the materials
properties of the MXenes. In general, potential applications, where surface
interactions with intercalation elements are important processes, will benefit
from the new knowledge presented.
Recently, an exotic quantum Hall ferromagnet with spin-filtered helical edge
modes was observed in monolayer graphene on a high-dielectric constant
substrate at moderate magnetic fields, withstanding temperatures of up to 110
Kelvin [L. Veyrat et al., Science 367, 781 (2020)]. However, the characteristic
quantized longitudinal resistance mediated by these edge modes departs from
quantization with decreasing temperature. In this work, we investigate the
transport properties of helical edge modes in a graphene nanoribbon under a
perpendicular magnetic field using the Landauer-Buttiker transport formalism.
We find that the departure of quantization of longitudinal conductance is due
to the helical-edge gap opened by the Rashba spin-orbital coupling. The
quantization can be restored by weak nonmagnetic Anderson disorder at low
temperature, increasing the localization length, or by raising temperature at
weak disorder, through thermal broadening. The resulted conductance is very
close to the quantized value 2e2/h, which is in qualitatively consistent with
the experimental results. Furthermore, we suggest that the helical quantum Hall
phase in graphene could be a promising platform for creating Majorana zero
modes by introducing superconductivity.
Low-dimensional Ge hole devices are promising systems with many potential
applications such as hole spin qubits, Andreev spin qubits, Josephson
junctions, and can serve as a basis for the realization of topological
superconductivity. This vast array of potential uses for Ge largely stems from
the exceptionally strong and controllable spin-orbit interaction (SOI),
ultralong mean free paths, long coherence times, and CMOS compatibility.
However, when brought into proximity with a superconductor (SC), metallization
normally diminishes many useful properties of a semiconductor, for instance,
typically reducing the $g$ factor and SOI energy, as well as renormalizing the
effective mass. In this paper we consider metallization of a Ge nanowire (NW)
in proximity to a SC, explicitly taking into account the 3D geometry of the NW.
We find that proximitized Ge exhibits a unique phenomenology of metallization
effects, where the 3D cross section plays a crucial role. For instance, in
contrast to expectations, we find that SOI can be enhanced by strong coupling
to the superconductor. We also show that the thickness of the NW plays a
critical role in determining both the size of the proximity induced pairing
potential and metallization effects, since the coupling between NW and SC
strongly depends on the distance of the NW wave function from the interface
with the SC. In the absence of electrostatic effects, we find that a sizable
gap opens only in thin NWs ($d\lesssim 3$ nm). In thicker NWs, the wave
function must be pushed closer to the SC by electrostatic effects in order to
achieve a sizable proximity gap such that the required electrostatic field
strength can simultaneously induce a strong SOI. The unique and sometimes
beneficial nature of metallization effects in SC-Ge NW devices evinces them as
ideal platforms for future applications in quantum information processing.
Eigenstate coalescence in non-Hermitian systems is widely observed in diverse
scientific domains encompassing optics and open quantum systems. Recent
investigations have revealed that adiabatic encircling of exceptional points
(EPs) leads to a nontrivial Berry phase in addition to an exchange of
eigenstates. Based on these phenomena, we propose in this work an exhaustive
classification framework for EPs in non-Hermitian physical systems. In contrast
to previous classifications that only incorporate the eigenstate exchange
effect, our proposed classification gives rise to finer $\mathbb{Z}_2$
classifications depending on the presence of a $\pi$ Berry phase after the
encircling of the EPs. Moreover, by mapping arbitrary one-dimensional systems
to the adiabatic encircling of EPs, we can classify one-dimensional
non-Hermitian systems characterized by topological phase transitions involving
EPs. Applying our exceptional classification to various one-dimensional models,
such as the non-reciprocal Su--Schrieffer--Heeger (SSH) model, we exhibit the
potential for enhancing the understanding of topological phases in
non-Hermitian systems. Additionally, we address exceptional bulk-boundary
correspondence and the emergence of distinct topological boundary modes in
non-Hermitian systems.
We develop a model, which incorporates both intra- and intervalley
scatterings to master equation, to explore exciton valley coherence in
monolayer WS$_2$ subjected to magnetic field. For linearly polarized (LP)
excitation accompanied with an initial coherence, our determined valley
dynamics manifests the coherence decay being faster than the exciton population
relaxation, and agrees with experimental data by Hao et al.[Nat. Phys. 12, 677
(2016)]. Further, we reveal that magnetic field may quench the electron-hole
(e-h) exchange induced pure dephasing -- a crucial decoherence source -- as a
result of lifting of valley degeneracy, allowing to magnetically regulate
valley coherence. In particular, at low temperatures for which the
exciton-phonon (ex-ph) interaction is weak, we find that the coherence time is
expected to attain ${\tau}_{\mathcal{C}}\sim 1$ ps, facilitating full control
of qubits based on the valley pseudospin. For dark excitons, we demonstrate an
emerging coherence even in the absence of initial coherent state, which has a
long coherence time ($\sim 15$ ps) at low temperature. Our work provides an
insight into tunable valley coherence and coherent valley control based on dark
excitons.
We present a model for the positive extreme magnetoresistance (XMR), recently
observed in a plethora of metallic systems, such as PtSn$_4$, PtBi$_2$,
PdCoO$_2$, WTe$_2$, NbSb$_2$, NbP, TaSb$_2$, LaSb, LaBi, ZrSiS and MoTe$_2$.
The model is an extension of our earlier work on positive giant
magnetoresistance, and uses an elaborate diagrammatic formulation. XMR is a
bulk effect (not a surface effect), due to the dramatic sensitivity of the
conductivity to the finite magnetic field $H$. This is possible at low
temperatures, in the presence of finite disorder elastic spin scattering, and
for a special value, predicted from the theory, of the material-dependent
effective Coulomb repulsion. Good agreement with experiments is obtained.
According to our model XMR is higher in cleaner samples, and anisotropic with
regards to the direction of $H$. We discuss in particular compounds containing
the elements Pt, Sc, and Rh.
Morphology plays a crucial role in deciding the chemical and optical
properties of nanomaterials due to confinement effects. We report the
morphology transition of colloidal molybdenum disulfide (MoS2) nanostructures,
synthesized by one pot heat-up method, from mix of quantum dots (QDs) and
nanosheets to predominantly nanorods by varying the synthesis reaction
temperature from 90 to 160 degree C. The stoichiometry and composition of the
synthesized QDs, nanosheets and nanorods have been quantified to be MoS2 using
energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy
analysis. Nanostructure morphology transition due to variation in reaction
temperature has resulted in photoluminescence quantum yield enhancement from
zero to 4.4% on increase in temperature from 90 to 120 degree C. On further
increase in temperature to 160 degree C, a decrease in quantum yield to 2.63%
is observed. A red shift of 18 nm and 140 nm in the emission maxima and
absorption edge respectively is observed for the synthesized nanostructures
with increase in reaction temperature from 90 to 160 degree C. The change in
the quantum yield is attributed to the change in shape and hence confinement of
charge carriers. To the best of our knowledge, first-time microscopic analysis
of colloidal MoS2 nanostructures shape and optical property variation with
temperature explained by non-classical growth mechanism is presented.
Superconductor/semiconductor hybrid devices have attracted increasing
interest in the past years. Superconducting electronics aims to complement
semiconductor technology, while hybrid architectures are at the forefront of
new ideas such as topological superconductivity and protected qubits. In this
work, we engineer the induced superconductivity in two-dimensional germanium
hole gas by varying the distance between the quantum well and the aluminum. We
demonstrate a hard superconducting gap and realize an electrically and flux
tunable superconducting diode using a superconducting quantum interference
device (SQUID). This allows to tune the current phase relation (CPR), to a
regime where single Cooper pair tunneling is suppressed, creating a $ \sin
\left( 2 \varphi \right)$ CPR. Shapiro experiments complement this
interpretation and the microwave drive allows to create a diode with $ \approx
100 \%$ efficiency. The reported results open up the path towards monolithic
integration of spin qubit devices, microwave resonators and (protected)
superconducting qubits on a silicon technology compatible platform.
Manipulating the interlayer twist angle is a powerful tool to tailor the
properties of layered two-dimensional crystals. The twist angle has a
determinant impact on these systems' atomistic structure and electronic
properties. This includes the corrugation of individual layers, formation of
stacking domains and other structural elements, and electronic structure
changes due to the atomic reconstruction and superlattice effects. However, how
these properties change with the twist angle (ta) is not yet well understood.
Here, we monitor the change of twisted bilayer MoS2 characteristics as function
of ta. We identify distinct structural regimes, with particular structural and
electronic properties. We employ a hierarchical approach ranging from a
reactive force field through the density-functional-based tight-binding
approach and density-functional theory. To obtain a comprehensive overview, we
analyzed a large number of twisted bilayers with twist angles in the range
0.2-59.6deg. Some systems include up to half a million atoms, making structure
optimization and electronic property calculation challenging. For 13<ta<47, the
structure is well-described by a moir\'e regime composed of two rigidly twisted
monolayers. At small ta (ta<3 and 57<ta), a domain-soliton regime evolves,
where the structure contains large triangular stacking domains, separated by a
network of strain solitons and short-ranged high-energy nodes. The corrugation
of the layers and the emerging superlattice of solitons and stacking domains
affects the electronic structure. Emerging predominant characteristic features
are Dirac cones at K and kagome bands. These features flatten for ta
approaching 0 and 60deg. Our results show at which ta range the characteristic
features of the reconstruction emerge and give rise to exciting electronics. We
expect our findings also to be relevant for other twisted bilayer systems.
We study two models of overdamped self-propelled disks in two dimensions,
with and without aligning interactions. Active mesoscale flows leading to
chaotic advection emerge in both models in the homogeneous dense fluid away
from dynamical arrest, forming streams and vortices reminiscent of multiscale
flow patterns in turbulence. We show that the characteristics of these flows do
not depend on the specific details of the active fluids, and result from the
competition between crowding effects and persistent propulsions. Our results
suggest that dense active fluids present a type of `active turbulence' distinct
from collective flows reported in other types of active systems.
In this paper, a statistical mechanical derivation of thermodynamically
consistent fluid dynamical equations is presented for viscous and
non-isothermal molecular fluids. The coarse-graining process is based on the
combination of the Dirac-delta formalism of Irving and Kirkwood and the
first-order Taylor expansion of the leading-order solution of the
Chapman-Enskog theory. The non-equilibrium thermodynamic quantities and
constitutive relations directly emerge in the proposed coarse-graining process,
which results in a completion of the phenomenological theory.
Graphene is one of the most researched two dimensional (2D) material due to
its unique combination of mechanical, thermal and electrical properties.
Special 2D structure of graphene enables it to exhibit a wide range of peculiar
material properties like high Young's modulus, high specific strength etc.
which are critical for myriad of applications including light weight structural
materials, multi-functional coating and flexible electronics. It is quite
challenging and costly to experimentally investigate graphene/graphene based
nanocomposites, computational simulations such as molecular dynamics (MD)
simulations are widely adopted for understanding the microscopic origins of
their unique properties. However, disparate results were reported from
computational studies, especially MD simulations using various empirical
inter-atomic potentials. In this work, an artificial neural network based
interatomic potential has been developed for graphene to represent the
potential energy surface based on first principle calculations. The developed
machine learning potential (MLP) facilitates high fidelity MD simulations to
approach the accuracy of ab initio methods but with a fraction of computational
cost, which allows larger simulation size/length, and thereby enables
accelerated discovery/design of graphene-based novel materials. Lattice
parameter, coefficient of thermal expansion (CTE), Young's modulus and yield
strength are estimated using machine learning accelerated MD simulations
(MLMD), which are compared to experimental/first principle calculations from
previous literatures. It is demonstrated that MLMD can capture the dominating
mechanism governing CTE of graphene, including effects from lattice parameter
and out of plane rippling.
Connectivity and reachability on temporal networks, which can describe the
spreading of a disease, decimation of information or the accessibility of a
public transport system over time, have been among the main contemporary areas
of study in complex systems for the last decade. However, while isotropic
percolation theory successfully describes connectivity in static networks, a
similar description has not been yet developed for temporal networks. Here
address this problem and formalize a mapping of the concept of temporal network
reachability to percolation theory. We show that the limited-waiting-time
reachability, a generic notion of constrained connectivity in temporal
networks, displays directed percolation phase transition in connectivity.
Consequently, the critical percolation properties of spreading processes on
temporal networks can be estimated by a set of known exponents characterising
the directed percolation universality class. This result is robust across a
diverse set of temporal network models with different temporal and topological
heterogeneities, while by using our methodology we uncover similar reachability
phase transitions in real temporal networks too. These findings open up an
avenue to apply theory, concepts and methodology from the well-developed
directed percolation literature to temporal networks.
The mechanism of the pseudogap observed in hole-doped cuprates remains one of
the central puzzles in condensed matter physics. We analyze this phenomenon via
a Feynman-diagrammatic inspection of the Hubbard model. Our approach captures
the pivotal interplay between Mott localization and Fermi surface topology
beyond weak-coupling spin fluctuations, which would open a spectral gap near
hot spots. We show that strong coupling and particle-hole asymmetry trigger a
very different mechanism: a large imaginary part of the spin-fermion vertex
promotes damping of antinodal fermions and, at the same time, protects the
nodal Fermi arcs (antidamping). Our analysis naturally explains puzzling
features of the pseudogap observed in experiments, such as Fermi arcs being cut
off at the antiferromagnetic zone boundary and the subordinate role of hot
spots.
Twisted bilayer graphene (tBLG) including interlayer interaction and
rotational disorder shows anomalous electron transport as a function of
twist-angles (tAs). In this work, we address the electronic properties and
electron transport of circular and rectangular twisted graphene nanoribbon
(tGN) and twisted heterostructure of graphene/boron-nitride nanoribbon
(thG/BNN) channels by applying the tight-binding Hamiltonian for two regimes of
small and large tAs. Analysis of band structure reveals that the circular tGNs
for small and large tAs have metallic behavior, while phase transition of metal
to semiconductor occurs in rectangular case, sweeping small tAs to large ones.
This implies a different transport mechanism depending on the tAs disorder,
whiles the Klein paradox appears in the transmission and conductance of
circular tGNs. We distinguish that the local electron states of rectangular
tGNs with large tAs create degenerate multiflat bands, supporting decoupling of
two ribbons and high conductance state. However, coupled two Dirac electron
gases for small tAs of rectangular channel cause Klein paradox due to their
resonant scattering. We compute the Hall conductivity in both tGNs for wide
range of magnetic field. In circular tGNs the valance and conduction band
energy is quantized into electron/hole-like Landau level, while for rectangular
tGNs with applied magnetic field the Hall conductivity shows complex behavior.
Moreover, we provide a platform for quantum transport and Hall effect of
thG/BNN, which host a vast nontrivial emergent electronic state. Our findings
suggest that circular/rectangular tGNs and thG/BNNs with new electron states of
Moir\'e pattern besides the Klein paradox suitable for switching of several
nanochannel.
The event graph representation of temporal networks suggests that the
connectivity of temporal structures can be mapped to a directed percolation
problem. However, similar to percolation theory on static networks, this
mapping is valid under the approximation that the structure and interaction
dynamics of the temporal network are determined by its local properties, and
otherwise, it is maximally random. We challenge these conditions and
demonstrate the robustness of this mapping in case of more complicated systems.
We systematically analyze random and regular network topologies and
heterogeneous link-activation processes driven by bursty renewal or
self-exciting processes using numerical simulation and finite-size scaling
methods. We find that the critical percolation exponents characterizing the
temporal network are not sensitive to many structural and dynamical network
heterogeneities, while they recover known scaling exponents characterizing
directed percolation on low dimensional lattices. While it is not possible to
demonstrate the validity of this mapping for all temporal network models, our
results establish the first batch of evidence supporting the robustness of the
scaling relationships in the limited-time reachability of temporal networks.
Long-range entanglement--the backbone of topologically ordered states--cannot
be created in finite time using local unitary circuits, or equivalently,
adiabatic state preparation. Recently it has come to light that single-site
measurements provide a loophole, allowing for finite-time state preparation in
certain cases. Here we show how this observation imposes a complexity hierarchy
on long-range entangled states based on the minimal number of measurement
layers required to create the state, which we call "shots". First, similar to
Abelian stabilizer states, we construct single-shot protocols for creating any
non-Abelian quantum double of a group with nilpotency class two (such as $D_4$
or $Q_8$). We show that after the measurement, the wavefunction always
collapses into the desired non-Abelian topological order, conditional on
recording the measurement outcome. Moreover, the clean quantum double ground
state can be deterministically prepared via feedforward--gates which depend on
the measurement outcomes. Second, we provide the first constructive proof that
a finite number of shots can implement the Kramers-Wannier duality
transformation (i.e., the gauging map) for any solvable symmetry group. As a
special case, this gives an explicit protocol to prepare twisted quantum double
for all solvable groups. Third, we argue that certain topological orders, such
as non-solvable quantum doubles or Fibonacci anyons, define non-trivial phases
of matter under the equivalence class of finite-depth unitaries and
measurement, which cannot be prepared by any finite number of shots. Moreover,
we explore the consequences of allowing gates to have exponentially small
tails, which enables, for example, the preparation of any Abelian anyon theory,
including chiral ones. This hierarchy paints a new picture of the landscape of
long-range entangled states, with practical implications for quantum
simulators.
Close to the demixing transition, the degree of freedom associated to
relative density fluctuations of a two-component Bose-Einstein condensate is
described by a non-dissipative Landau-Lifshitz equation. In the quasi
one-dimensional weakly immiscible case, this mapping surprisingly predicts that
a dark-bright soliton should oscillate when subject to a constant force
favoring separation of the two components. We propose a realistic experimental
implementation of this phenomenon which we interpret as a spin-Josephson effect
in the presence of a movable barrier.
In this work, we study superconducting moir\'e homobilayer transition metal
dichalcogenides where the Ising spin-orbit coupling (SOC) is much larger than
the moir\'e bandwidth. We call such noncentrosymmetric superconductors, moir\'e
Ising superconductors. Due to the large Ising SOC, the depairing effect caused
by the Zeeman field is negligible and the in-plane upper critical field
($B_{c2}$) is determined by the orbital effects. This allows us to study the
effect of large orbital fields. Interestingly, when the applied in-plane field
is larger than the conventional orbital $B_{c2}$, a finite-momentum pairing
phase would appear which we call the orbital Fulde-Ferrell (FF) state. In this
state, the Cooper pairs acquire a net momentum of $2q_B$ where $2q_B=eBd$ is
the momentum shift caused by the magnetic field $B$ and $d$ denotes the layer
separation. This orbital field-driven FF state is different from the
conventional FF state driven by Zeeman effects in Rashba superconductors.
Remarkably, we predict that the FF pairing would result in a giant
superconducting diode effect under electric gating when layer asymmetry is
induced. An upturn of the $B_{c2}$ as the temperature is lowered, coupled with
the giant superconducting diode effect, would allow the detection of the
orbital FF state.
Magnetoresistance, that is, the change of the resistance with the magnetic
field, is usually a quadratic function of the field strength. A linear
magnetoresistance usually reveals extraordinary properties of a system. In the
quantum limit where only the lowest Landau band is occupied, a quantum linear
magnetoresistance was believed to be the signature of the Weyl fermions with 3D
linear dispersion. Here, we comparatively investigate the quantum-limit
magnetoresistance of systems with different band dispersions as well as
different types of impurities. We find that the magnetoresistance can also be
linear for the quadratic energy dispersion. We show that both longitudinal and
transverse magnetoresistance can be linear if long-range-Gaussian-type
impurities dominate, but Coulomb-type impurities can only induce linear
transverse magnetoresistance. Moreover, we find a negative longitudinal
magnetoresistance in massless Dirac fermions, regardless of the impurity type,
as a result of the combined effect of the linear dispersion and the scattering
mechanism. Our findings well explain some of the linear magnetoresistance
observed in the experiments and provide insights to the understanding of
quantum-limit magnetoresistance.
We demonstrate the use of a ring-shaped Bose-Einstein condensate as a
rotation sensor by measuring the interference between two counter-propagating
phonon modes imprinted azimuthally around the ring. We observe rapid decay of
the excitations, quantified by quality factors of at most $Q \approx 27$. We
numerically model our experiment using the c-field methodology, allowing us to
estimate the parameters that maximise the performance of our sensor. We explore
the damping mechanisms underlying the observed phonon decay, and identify two
distinct Landau scattering processes that each dominate at different driving
amplitudes and temperatures. Our simulations reveal that $Q$ is limited by
strong damping of phonons even in the zero temperature limit. We perform an
experimental proof-of-principle rotation measurement using persistent currents
imprinted around the ring. We demonstrate a rotation sensitivity of up to
$\Delta \Omega \approx 0.3$ rad/s from a single image, with a theoretically
achievable value of $\Delta \Omega \approx 0.04$ rad/s in the atomic shot-noise
limit. This is a significant improvement over the shot-noise-limited $\Delta
\Omega \approx 1$ rad/s sensitivity obtained by Marti et al. [Phys. Rev. A 91,
013602 (2015)] for a similar setup.
Thermodynamics is a science concerning the state of a system, whether it is
stable, metastable, or unstable. The combined law of thermodynamics derived by
Gibbs about 150 years ago laid the foundation of thermodynamics. In Gibbs
combined law, the entropy production due to internal processes was not
included, and the 2nd law was thus practically removed from the Gibbs combined
law, so it is only applicable to systems under equilibrium. Gibbs further
derived the classical statistical thermodynamics in terms of the probability of
configurations in a system. With the quantum mechanics (QM) developed, the
QM-based statistical thermodynamics was established and connected to classical
statistical thermodynamics at the classical limit as shown by Landau. The
development of density function theory (DFT) by Kohn and co-workers enabled the
QM prediction of properties of the ground state of a system. On the other hand,
the entropy production due to internal processes in non-equilibrium systems was
studied separately by Onsager and Prigogine and co-workers. The digitization of
thermodynamics was developed by Kaufman in the framework of the CALPHAD
modeling of individual phases. Our recently termed zentropy theory integrates
DFT and statistical mechanics through the replacement of the internal energy of
each individual configuration by its DFT-predicted free energy. Furthermore,
through the combined law of thermodynamics with the entropy production as a
function of internal degrees of freedom, it is shown that the kinetic
coefficient matrix of independent internal processes is diagonal with respect
to the conjugate potentials in the combined law, and the cross phenomena
represented by the phenomenological Onsager reciprocal relationships are due to
the dependence of the conjugate potential of the molar quantity in a flux on
nonconjugate potentials.
Recent studies have demonstrated that measures of tripartite entanglement can
probe data characterizing topologically ordered phases to which bipartite
entanglement is insensitive. Motivated by these observations, we compute the
reflected entropy and logarithmic negativity, a mixed state entanglement
measure, in tripartitions of bosonic topological orders using the anyon
diagrammatic formalism. We consider tripartitions in which three subregions
meet at trijunctions and tetrajunctions. In the former case, we find a
contribution to the negativity which distinguishes between Abelian and
non-Abelian order while in the latter, we find a distinct universal
contribution to the reflected entropy. Finally, we demonstrate that the
negativity and reflected entropy are sensitive to the $F$-symbols for
configurations in which we insert an anyon trimer, for which the Markov gap,
defined as the difference between the reflected entropy and mutual information,
is also found to be non-vanishing.
We study the anomalous Hall effect (AHE) in tilted Weyl metals with Gaussian
disorder due to the crossed X and {\Psi} diagrams in this work. The importance
of such diagrams to the AHE has been demonstrated recently in two dimensional
(2D) massive Dirac model and Rashba ferromagnets. It has been shown that the
inclusion of such diagrams dramatically changes the total AHE in such systems.
In this work, we show that the contributions from the X and {\Psi} diagrams to
the AHE in tilted Weyl metals are of the same order of the non-crossing diagram
we studied in a previous work, but with opposite sign. The total contribution
of the X and {\Psi} diagrams cancels the majority part of the contribution from
the non-crossing diagram in tilted Weyl metals, similar to the 2D massive Dirac
model. We also discuss the difference of the contributions from the crossed
diagrams between 2D massive Dirac model and the tilted Weyl metals. At last, we
discuss the experimental relevance of observing the AHE due to the X and {\Psi}
diagrams in type-I Weyl metal such as Co3Sn2S2.
We investigate the influence of the temporal variations of various medium
parameters on the propagation of Dirac-type waves in materials where the
quasiparticles are described by a generalized version of the pseudospin-1/2
Dirac equation. Our considerations also include the propagation of
electromagnetic waves in metamaterials with the Dirac-type dispersion. We focus
on the variations of the scalar and vector potentials, mass, Fermi velocity,
and tilt velocity describing the Dirac cone tilt. We derive the scattering
coefficients associated with the temporal interfaces and slabs analytically and
find that the temporal scattering is caused by the changes of the mass, Fermi
velocity, and vector potential, but does not arise from the changes of the
scalar potential and tilt velocity. We also explore the conditions under which
the temporal Brewster effect and total interband transition occur and calculate
the change in total wave energy. We examine bilayer Dirac temporal crystals
where parameters switch between two different sets of values periodically and
prove that these systems do not have momentum gaps. Finally, we assess the
potential for observing these temporal scattering effects in experiments.
Conversion of light into heat is essential for a broad range of technologies
such as solar thermal heating, catalysis and desalination. Three-dimensional
(3D) carbon nanomaterial-based aerogels have shown to hold great promise as
photothermal transducer materials. However, till now, their light-to-heat
conversion is limited by surface-near absorption, resulting in a strong heat
localization only at the illuminated surface region, while most of the aerogel
volume remains unused. We present an innovative fabrication concept for highly
porous (>99.9%) photothermal hybrid aeromaterials, that enable an ultra-rapid
and volumetric photothermal response with an enhancement by a factor of around
2.5 compared to the pristine variant. The hybrid aeromaterial is based on
strongly light-scattering framework structures composed of interconnected
hollow silicon dioxide (SiO${_2}$) microtubes, which are functionalized with
extremely low amounts (in order of a few ${\mu}$g cm${^-}$${^3}$) of reduced
graphene oxide (rGO) nanosheets, acting as photothermal agents. Tailoring the
density of rGO within the framework structure enables us to control both, light
scattering and light absorption, and thus the volumetric photothermal response.
We further show that by rapid and repeatable gas activation these transducer
materials expand the field of photothermal applications, like untethered
light-powered and -controlled microfluidic pumps and soft pneumatic actuators.
Recent experimental study unveiled highly unconventional phenomena in the
superconducting twisted bilayer graphene (TBG) with ultra flat bands, which
cannot be described by the conventional BCS theory. For example, given the
small Fermi velocity of the flat bands, the predicted superconducting coherence
length accordingly to BCS theory is more than 20 times shorter than the
measured values. A new theory is needed to understand many of the
unconventional properties of flat band superconductors. In this work, we
establish a Ginzburg-Landau (GL) theory from a microscopic flat band
Hamiltonian. The GL theory shows how the properties of the physical quantities
such as the critical temperature, the superconducting coherence length, the
upper critical field and the superfluid density are governed by the quantum
metric of the Bloch states. One key conclusion is that the superconducting
coherence length is not determined by the Fermi velocity but by the size of the
optimally localized Wannier functions which is limited by quantum metric.
Applying the theory to TBG, we calculated the superconducting coherence length
and the upper critical fields. The results match the experimental ones well
without fine tuning of parameters. The established GL theory provides a new and
general theoretical framework for understanding flat band superconductors with
quantum metric.
The advancement of two-dimensional polar metals tends to be limited by the
incompatibility between electric polarity and metallicity as well as dimension
reduction. Here, we report polar and metallic Janus monolayers of MoSi$_2$N$_4$
family by breaking the out-of-plane (OOP) structural symmetry through Z (P/As)
substitution of N. Despite the semiconducting nature of MoSi$_2$X$_4$
(X=N/P/As), four Janus MoSi$_2$N$_{x}$Z$_{4-x}$ monolayers are found to be
polar metals owing to the weak coupling between the conducting electrons and
electric polarity. The metallicity is originated from the Z substitution
induced delocalization of occupied electrons in Mo-d orbitals. The OOP electric
polarizations around 10$-$203 pC/m are determined by the asymmetric OOP charge
distribution due to the non-centrosymmetric Janus structure. The corresponding
OOP piezoelectricity is further revealed as high as 39$-$153 pC/m and
0.10$-$0.31 pm/V for piezoelectric strain and stress coefficients,
respectively. The results demonstrate polar metallicity and high OOP
piezoelectricity in Janus MoSi$_2$N$_{x}$Z$_{4-x}$ monolayers and open new
vistas for exploiting unusual coexisting properties in monolayers derived from
MoSi$_2$N$_4$ family.
We propose open quantum spin liquids as a novel platform for studying anyon
condensation topological transitions. As a concrete example, we consider the
Kitaev spin liquid (KSL) coupled to a Markovian environment via the Lindblad
master equation approach. By a combined study of exact solutions and numerical
approaches, we demonstrate a dynamical anyon condensation transition between
the initially prepared pure KSL and mixed-state KSL arising in the steady state
limit, induced by the environment's decoherence and dissipation effects.
General principles of generating anyon condensations in open quantum spin
liquids are discussed. This work presents mixed-state quantum spin liquids as a
new route for anyon condensation transitions.
Laser induced shift of atomic states due to the AC-Stark effect has played a
central role in cold-atom physics and facilitated their emergence as analog
quantum simulators. Here, we explore this phenomena in an atomically thin layer
of semiconductor MoSe$_2$, which we embedded in a heterostructure enabling
charge tunability. Shining an intense pump laser with a small detuning from the
material resonances, we generate a large population of virtual collective
excitations, and achieve a regime where interactions with this background
population is the leading contribution to the AC-Stark shift. Using this
technique we study how itinerant charges modify -- and dramatically enhance --
the interactions between optical excitations. In particular, our experiments
show that the interaction between attractive polarons could be more than an
order of magnitude stronger than those between bare excitons.
To study gapped phases of $4$d gauge theories, we introduce the temporal
gauging of $\mathbb{Z}_N$ $1$-form symmetry in $4$d quantum field theories
(QFTs), thereby defining effective $3$d QFTs with
$\widetilde{\mathbb{Z}}_N\times \mathbb{Z}_N$ $1$-form symmetry. In this way,
spatial fundamental Wilson and 't Hooft loops are simultaneously genuine line
operators. Assuming a mass gap and Lorentz invariant vacuum of the $4$d QFT,
the $\widetilde{\mathbb{Z}}_N\times \mathbb{Z}_N$ symmetry must be
spontaneously broken to an order-$N$ subgroup $H$, and we can classify the $4$d
gapped phases by specifying $H$. This establishes the $1$-to-$1$ correspondence
between the two classification schemes for gapped phases of $4$d gauge
theories: One is the conventional Wilson-'t Hooft classification, and the other
is the modern classification using the spontaneous breaking of $4$d $1$-form
symmetry enriched with symmetry-protected topological states.
This theoretical research is devoted to study topological phase transitions
in a two-dimensional honeycomb ferromagnetic lattice with unequal
Dzyaloshinskii-Moriya interactions for the two sublattices. With the help of a
first-order Green function formalism, we analyze the influence of magnon-magnon
interaction on the magnon band topology. It is found that the existence of the
antichiral Dzyaloshinskii-Moriya interaction can led to a tilting of the
renormalized magnon bands near the Dirac momenta. Then, the renormalized magnon
band gaps at Dirac points have different widths. Through changing the
temperature, we can observe the renormalized magnon band gap closing-reopening
phenomenon, which corresponds to the topological phase transition. Our results
show that the critical temperature of the topological phase transition is
related to the strength of the antichiral Dzyaloshinskii-Moriya interaction.
Motivated by the recent experimental realization of the half-quantized Hall
effect phase in a three-dimensional (3D) semi-magnetic topological insulator
[M. Mogi et al., Nature Physics 18, 390 (2022)], we propose a new scheme for
realizing the half-quantized Hall effect and Axion insulator in experimentally
mature 3D topological insulator heterostructures. Our approach involves
optically pumping and/or magnetically doping the topological insulator surface,
such as to break time reversal and gap out the Dirac cones. By toggling between
left and right circularly polarized optical pumping, the sign of the
half-integer Hall conductance from each of the surface Dirac cones can be
controlled, such as to yield half-quantized ($0+1/2$), Axion ($-1/2+1/2=0$),
and Chern ($1/2+1/2=1$) insulator phases. We substantiate our results based on
detailed band structure and Berry curvature numerics on the Floquet Hamiltonian
in the high-frequency limit. Our work showcases how new topological phases can
be obtained through mature experimental approaches such as magnetic layer
doping and circularly polarized laser pumping and opens up potential device
applications such as a polarization chirality-controlled topological
transistor.
We formulate the hydrodynamics of active columnar phases, with
two-dimensional translational order in the plane perpendicular to the columns
and no elastic restoring force for relative sliding of the columns, using the
general formalism of an active model H$^*$. Our predictions include:
two-dimensional odd elasticity coming from three-dimensional plasmon-like
oscillations of the columns in chiral polar phases with a frequency that is
independent of wavenumber and non-analytic; a buckling instability coming from
the generic force-dipole active stress analogous to the mechanical
Helfrich-Hurault instability in passive materials; the selection of helical
column undulations by apolar chiral activity.

Date of feed: Tue, 13 Jun 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]+) **Design of quasiperiodic magnetic superlattices and domain walls supporting bound states. (arXiv:2306.06132v1 [cond-mat.mes-hall])**

Miguel Castillo-Celeita, Alonso Contreras-Astorga, David J. Fernández C

**Entanglement in BF theory I: Essential topological entanglement. (arXiv:2306.06158v1 [hep-th])**

Jackson R. Fliss, Stathis Vitouladitis

**Quantum Hall Effect in a Weyl-Hubbard Model: Interplay between Topology and Correlation. (arXiv:2306.06183v1 [cond-mat.str-el])**

Snehasish Nandy, Christopher Lane, Jian-Xin Zhu

**Chiral pair density wave as the precursor of pseudogap in kagom\'e superconductors. (arXiv:2306.06242v1 [cond-mat.supr-con])**

Narayan Mohanta

**Bandgaps of insulators from moment-functional based spectral density-functional theory. (arXiv:2306.06259v1 [cond-mat.other])**

Frank Freimuth, Stefan Blügel, Yuriy Mokrousov

**Tailoring Exciton Dynamics in TMDC Heterobilayers in the Quantum Plasmonic Regime. (arXiv:2306.06337v1 [cond-mat.mes-hall])**

Mahfujur Rahaman, Gwangwoo Kim, Kyung Yeol Ma, Seunguk Song, Hyeon Suk Shin, Deep Jariwala

**Inverse Design of Power-Law Nonlinear Constitutive Responses via Stiffness Normalization. (arXiv:2306.06585v1 [cond-mat.mtrl-sci])**

Brianna MacNider, H. Alicia Kim, Nicholas Boechler

**Jahn-Teller magnets. (arXiv:2306.06612v1 [cond-mat.str-el])**

A.S. Moskvin

**Ferromagnetic Superconductivity in Two-dimensional Niobium Diselenide. (arXiv:2306.06659v1 [cond-mat.supr-con])**

Tingyu Qu, Shangjian Jin, Fuchen Hou, Deyi Fu, Junye Huang, Darryl Foo Chuan Wei, Xiao Chang, Kenji Watanabe, Takashi Taniguchi, Junhao Lin, Shaffique Adam, Barbaros Özyilmaz

**Strain and spin orbit coupling effects on electronic and optical properties of 2D CX/graphene (X = S, Se, Te) vdW heterostructure for solar energy harvesting. (arXiv:2306.06690v1 [cond-mat.mes-hall])**

Amit K Bhojani, Hardik L Kagdada, Dheeraj K Singh

**Robust Topological Anderson Insulator Induced Reentrant Localization Transition. (arXiv:2306.06818v1 [cond-mat.dis-nn])**

Zhanpeng Lu, Yunbo Zhang, Zhihao Xu

**Restoration of non-Hermitian bulk-boundary correspondence by counterbalancing skin effect. (arXiv:2306.06837v1 [cond-mat.other])**

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

**Non-zero, symmetric, off-diagonal resistance from rotational symmetry breaking in a Moire system. (arXiv:2306.06840v1 [cond-mat.mes-hall])**

Jay D. Sau, Sumanta Tewari

**Signature of Correlated Insulator in Electric Field Controlled Superlattice. (arXiv:2306.06848v1 [cond-mat.str-el])**

Jiacheng Sun, Sayed Ali Akbar Ghorashi, Kenji Watanabe, Takashi Taniguchi, Fernando Camino, Jennifer Cano, Xu Du

**Bogoliubov Corner Excitations in Conventional $s$-Wave Superfluids. (arXiv:2306.06907v1 [cond-mat.quant-gas])**

Wei Tu, Ya-Jie Wu, Ning Li, Miaodi Guo, Junpeng Hou

**Significant improvement of the lower critical field in Y doped Nb: potential replacement of basic material for the radio-frequency superconducting cavity. (arXiv:2306.06915v1 [physics.acc-ph])**

Wei Xie, Yu-Hao Liu, Xinwei Fan, Hai-Hu Wen

**The Origin of Ti 1s XANES Main Edge Shifts and EXAFS Oscillations in the Energy Storage Materials Ti2CTx and Ti3C2Tx MXenes. (arXiv:2306.06933v1 [cond-mat.mtrl-sci])**

Lars-Åke Näslund, Martin Magnuson

**Disorder and quantum transport of helical quantum Hall phase in graphene. (arXiv:2306.06939v1 [cond-mat.dis-nn])**

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

**Microscopic analysis of proximity-induced superconductivity and metallization effects in superconductor-germanium hole nanowires. (arXiv:2306.06944v1 [cond-mat.mes-hall])**

Christoph Adelsberger, Henry F. Legg, Daniel Loss, Jelena Klionvaja

**Exceptional Classifications of Non-Hermitian Systems. (arXiv:2306.06967v1 [quant-ph])**

Jung-Wan Ryu, Jae-Ho Han, Chang-Hwan Yi, Moon Jip Park, Hee Chul Park

**Magnetically tunable exciton valley coherence in monolayer WS$_2$ mediated by the electron-hole exchange and exciton-phonon interactions. (arXiv:2306.06977v1 [cond-mat.mes-hall])**

Kang Lan, Shijie Xie, Jiyong Fu, Fanyao Qu

**Theoretical model for the extreme positive magnetoresistance. (arXiv:2306.07020v1 [cond-mat.str-el])**

George Kastrinakis

**Morphology Transition with Temperature and their Effect on Optical Properties of Colloidal MoS2 Nanostructures. (arXiv:2306.07093v1 [cond-mat.mtrl-sci])**

Simran Lambora, Asha Bhardwaj

**Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas. (arXiv:2306.07109v1 [cond-mat.mes-hall])**

Marco Valentini, Oliver Sagi, Levon Baghumyan, Thijs de Gijsel, Jason Jung, Stefano Calcaterra, Andrea Ballabio, Juan Aguilera Servin, Kushagra Aggarwal, Marian Janik, Thomas Adletzberger, Rubén Seoane Souto, Martin Leijnse, Jeroen Danon, Constantin Schrade, Erik Bakkers, Daniel Chrastina, Giovanni Isella, Georgios Katsaros

**Relaxation effects in twisted bilayer molybdenum disulfide: structure, stability, and electronic properties. (arXiv:2306.07130v1 [cond-mat.mtrl-sci])**

Florian M. Arnold, Alireza Ghasemifard, Agnieszka Kuc, Jens Kunstmann, Thomas Heine

**Emerging mesoscale flows and chaotic advection in dense active matter. (arXiv:2306.07172v1 [cond-mat.soft])**

Yann-Edwin Keta, Juliane Klamser, Robert L. Jack, Ludovic Berthier

**A statistical mechanical approach to fluid dynamics for simple dissipative fluids. (arXiv:2306.07182v1 [cond-mat.stat-mech])**

Gyula I. Tóth

**Reliable machine learning potentials based on artificial neural network for graphene. (arXiv:2306.07246v1 [physics.comp-ph])**

Akash Singh, Yumeng Li

**Directed Percolation in Temporal Networks. (arXiv:2107.01510v7 [physics.soc-ph] UPDATED)**

Arash Badie-Modiri, Abbas K. Rizi, Márton Karsai, Mikko Kivelä

**Explaining the pseudogap through damping and antidamping on the Fermi surface by imaginary spin scattering. (arXiv:2107.06529v2 [cond-mat.str-el] UPDATED)**

Friedrich Krien, Paul Worm, Patrick Chalupa, Alessandro Toschi, Karsten Held

**The Effect of Twisting Angle on the Electronic Properties and Electron Transport and Hall Effect in the Twisted Circular and Rectangular Graphene and Graphene/Boron-Nitride Channels. (arXiv:2109.00718v2 [cond-mat.mes-hall] UPDATED)**

Farzaneh Shayeganfar, Ali Ramazani, Nicholas X Fang

**Directed Percolation in Random Temporal Network Models with Heterogeneities. (arXiv:2110.07698v4 [physics.soc-ph] UPDATED)**

Arash Badie-Modiri, Abbas K. Rizi, Márton Karsai, Mikko Kivelä

**Hierarchy of topological order from finite-depth unitaries, measurement and feedforward. (arXiv:2209.06202v2 [quant-ph] UPDATED)**

Nathanan Tantivasadakarn, Ashvin Vishwanath, Ruben Verresen

**Oscillating Solitons and AC Josephson Effect in Ferromagnetic Bose-Bose Mixtures. (arXiv:2209.11536v2 [cond-mat.quant-gas] UPDATED)**

Sebastiano Bresolin, Arko Roy, Gabriele Ferrari, Alessio Recati, Nicolas Pavloff

**Orbital Fulde-Ferrell pairing state in moir\'e Ising superconductors. (arXiv:2211.07406v3 [cond-mat.supr-con] UPDATED)**

Ying-Ming Xie, K. T. Law

**Impurity and dispersion effects on the linear magnetoresistance in the quantum limit. (arXiv:2212.00383v2 [cond-mat.mes-hall] UPDATED)**

Shuai Li, Hai-Zhou Lu, X. C. Xie

**Viability of rotation sensing using phonon interferometry in Bose-Einstein condensates. (arXiv:2212.11617v2 [cond-mat.quant-gas] UPDATED)**

Charles W. Woffinden, Andrew J. Groszek, Guillaume Gauthier, Bradley J. Mommers, Michael. W. J. Bromley, Simon A. Haine, Halina Rubinsztein-Dunlop, Matthew J. Davis, Tyler W. Neely, Mark Baker

**Thermodynamics and its Prediction and CALPHAD Modeling: Review, State of the Art, and Perspectives. (arXiv:2301.02132v4 [cond-mat.stat-mech] UPDATED)**

Zi-Kui Liu

**Entanglement in tripartitions of topological orders: a diagrammatic approach. (arXiv:2301.07763v3 [cond-mat.str-el] UPDATED)**

Ramanjit Sohal, Shinsei Ryu

**Anomalous Hall effect in type-I Weyl metals beyond the noncrossing approximation. (arXiv:2303.05829v2 [cond-mat.dis-nn] UPDATED)**

Jia-Xing Zhang, Wei Chen

**Propagation of Dirac waves through various temporal interfaces, slabs, and crystals. (arXiv:2303.13741v2 [cond-mat.mes-hall] UPDATED)**

Seulong Kim, Kihong Kim

**Hybrid aeromaterials for enhanced and rapid volumetric photothermal response. (arXiv:2303.14014v2 [physics.app-ph] UPDATED)**

Lena M. Saure (1), Niklas Kohlmann (2), Haoyi Qiu (1), Shwetha Shetty (3), Ali Shaygan Nia (4), Narayanan Ravishankar (3), Xinliang Feng (4), Alexander Szameit (5), Lorenz Kienle (2 and 6), Rainer Adelung (1 and 6), Fabian Schütt (1 and 6) ((1) Functional Nanomaterials, Department for Materials Science, Kiel, Germany, (2) Synthesis and Real Structure, Department for Materials Science, Kiel, Germany, (3) Materials Research Centre, Indian Institute of Science, Bangalore, India, (4) Department of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Dresden, Germany, (5) Institut für Physik, Universität Rostock, Rostock, Germany (6) Kiel Nano, Surface and Interface Science KiNSIS, Kiel University, Kiel, Germany)

**The Ginzburg-Landau theory of flat band superconductors with quantum metric. (arXiv:2303.15504v2 [cond-mat.supr-con] UPDATED)**

Shuai A. Chen, K. T. Law

**Monolayer polar metals with large piezoelectricity derived from MoSi$_2$N$_4$. (arXiv:2304.04209v2 [cond-mat.mtrl-sci] UPDATED)**

Yan Yin, Qihua Gong, Min Yi, Wanlin Guo

**Mixed-State Quantum Spin Liquid in Kitaev Lindbladian: Dynamical Anyon Condensation. (arXiv:2305.09197v2 [cond-mat.str-el] UPDATED)**

Kyusung Hwang

**Interaction induced AC-Stark shift of exciton-polaron resonances. (arXiv:2306.01778v2 [cond-mat.mes-hall] UPDATED)**

Takahiro Uto, Bertrand Evrard, Kenji Watanabe, Takashi Taniguchi, Martin Kroner, Atac Imamoglu

**Study of gapped phases of 4d gauge theories using temporal gauging of the $\mathbb{Z}_N$ 1-form symmetry. (arXiv:2306.02485v2 [hep-th] UPDATED)**

Mendel Nguyen, Yuya Tanizaki, Mithat Ünsal

**Topological phase transitions in a honeycomb ferromagnet with unequal Dzyaloshinskii-Moriya interactions. (arXiv:2306.02505v2 [cond-mat.other] UPDATED)**

Heng Zhu, Hongchao Shi, Zhengguo Tang, Bing Tang

**Light-induced half-quantized Hall effect and Axion insulator. (arXiv:2306.03187v2 [cond-mat.mes-hall] UPDATED)**

Fang Qin, Ching Hua Lee, Rui Chen

**Dynamics of Ordered Active Columns: Flows, Twists, and Waves. (arXiv:2306.03695v2 [cond-mat.soft] UPDATED)**

S. J. Kole, Gareth P. Alexander, Ananyo Maitra, Sriram Ramaswamy

Found 7 papers in prb The magnetic properties of $\mathrm{Pt}\text{/}{Co}_{1−x}{\mathrm{Lu}}_{x}\text{/}\mathrm{Pt}$ thin films have been investigated. For an alloy thickness of 3 nm, the saturation magnetization linearly decreases from 830 kA/m to 400 kA/m for $x$ varying between 18% and 40%, including the proximity-ind… The three-dimensional antiferromagnet ${\mathrm{Cu}}_{3}{\mathrm{TeO}}_{6}$ has recently drawn significant attention due to the coexistence of Dirac and triply degenerated magnons. Herein, we report that ${\mathrm{Cu}}_{3}{\mathrm{TeO}}_{6}$, with cubic symmetry, exhibits novel spin-driven ferroelec… By imaginary-time evolution with the Hamiltonian, an arbitrary state arrives in the system's ground state. In this paper, we conjecture that this dynamics can be simulated by a measurement-only circuit (MOC), where each projective measurement is set in a suitable way. Based on terms in the Hamiltoni… We first apply the functional-integral approach to a multiband Hubbard model near the critical pairing temperature and derive a generic effective action that is quartic in the fluctuations of the pairing order parameter. Then we consider time-reversal-symmetric systems with uniform (i.e., at both lo… ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ has been established as a prototype of a magnetic Weyl semimetal, exhibiting a giant anomalous Hall effect in its ferromagnetic phase. An attractive feature of this material is that Weyl points lie close to the Fermi level, so one can expect a hig… We calculate the frequency-dependent longitudinal and Hall conductivities and the Faraday and Kerr rotation angles for a single sheet of anisotropic Dirac semimetal protected by nonsymmorphic symmetry in the presence of a Zeeman term coupling to the out-of-plane component of the spin. While the Zeem… ${\mathrm{EuCd}}_{2}{\mathrm{As}}_{2}$ has been proposed to be one of the ideal platforms as an intrinsic topological magnetic system, potentially hosting a single pair of Weyl points when it is tuned into the ferromagnetic state with spins aligned out of plane by either external pressure or chemica…

Date of feed: Tue, 13 Jun 2023 03:17:02 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]+) **Laser single-shot magnetization reversal in ${\mathrm{Co}}_{1−x}{\mathrm{Lu}}_{x}$ nanostructures**

Y. Peng, G. Malinowski, W. Zhang, D. Lacour, F. Montaigne, S. Mangin, and M. Hehn

Author(s): Y. Peng, G. Malinowski, W. Zhang, D. Lacour, F. Montaigne, S. Mangin, and M. Hehn

[Phys. Rev. B 107, 214415] Published Mon Jun 12, 2023

**Realization of linear magnetoelectric effect in the Dirac magnon system ${\mathrm{Cu}}_{3}{\mathrm{TeO}}_{6}$**

Yongsen Tang, Lin Lin, Guanzhong Zhou, Wenjing Zhai, Lin Huang, Junhu Zhang, Shuhan Zheng, Meifeng Liu, Zhibo Yan, Xiangping Jiang, Xing'ao Li, and Jun-Ming Liu

Author(s): Yongsen Tang, Lin Lin, Guanzhong Zhou, Wenjing Zhai, Lin Huang, Junhu Zhang, Shuhan Zheng, Meifeng Liu, Zhibo Yan, Xiangping Jiang, Xing'ao Li, and Jun-Ming Liu

[Phys. Rev. B 107, 214416] Published Mon Jun 12, 2023

**Production of lattice gauge Higgs topological states in a measurement-only quantum circuit**

Yoshihito Kuno and Ikuo Ichinose

Author(s): Yoshihito Kuno and Ikuo Ichinose

[Phys. Rev. B 107, 224305] Published Mon Jun 12, 2023

**Extracting quantum-geometric effects from Ginzburg-Landau theory in a multiband Hubbard model**

M. Iskin

Author(s): M. Iskin

[Phys. Rev. B 107, 224505] Published Mon Jun 12, 2023

**Electronic structure evolution of the magnetic Weyl semimetal ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ with hole and electron doping**

Himanshu lohani, Paul Foulquier, Patrick Le Fèvre, François Bertran, Dorothée Colson, Anne Forget, and Véronique Brouet

Author(s): Himanshu lohani, Paul Foulquier, Patrick Le Fèvre, François Bertran, Dorothée Colson, Anne Forget, and Véronique Brouet

[Phys. Rev. B 107, 245119] Published Mon Jun 12, 2023

**Frequency-dependent Faraday and Kerr rotation in anisotropic nonsymmorphic Dirac semimetals**

Amarnath Chakraborty, Guang Bian, and Giovanni Vignale

Author(s): Amarnath Chakraborty, Guang Bian, and Giovanni Vignale

[Phys. Rev. B 107, 245120] Published Mon Jun 12, 2023

**Evolution of magnetism, valence, and crystal lattice in ${\mathrm{EuCd}}_{2}{\mathrm{As}}_{2}$ under pressure**

Greeshma C. Jose, Kaleb Burrage, Jose L. Gonzalez Jimenez, Weiwei Xie, Barbara Lavina, Jiyong Zhao, Esen E. Alp, Dongzhou Zhang, Yuming Xiao, Yogesh K. Vohra, and Wenli Bi

Author(s): Greeshma C. Jose, Kaleb Burrage, Jose L. Gonzalez Jimenez, Weiwei Xie, Barbara Lavina, Jiyong Zhao, Esen E. Alp, Dongzhou Zhang, Yuming Xiao, Yogesh K. Vohra, and Wenli Bi

[Phys. Rev. B 107, 245121] Published Mon Jun 12, 2023

Found 2 papers in prl The fractional Fourier transform (FrFT), a fundamental operation in physics that corresponds to a rotation of phase space by any angle, is also an indispensable tool employed in digital signal processing for noise reduction. Processing of optical signals in their time-frequency degree of freedom byp… High quality factor surface acoustic wave resonators can be optimized to measure quantum transport in graphene at low temperatures and high magnetic fields.

Date of feed: Tue, 13 Jun 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]+) **Experimental Implementation of the Optical Fractional Fourier Transform in the Time-Frequency Domain**

Bartosz Niewelt, Marcin Jastrzębski, Stanisław Kurzyna, Jan Nowosielski, Wojciech Wasilewski, Mateusz Mazelanik, and Michał Parniak

Author(s): Bartosz Niewelt, Marcin Jastrzębski, Stanisław Kurzyna, Jan Nowosielski, Wojciech Wasilewski, Mateusz Mazelanik, and Michał Parniak

[Phys. Rev. Lett. 130, 240801] Published Mon Jun 12, 2023

**Quantum Oscillations in Graphene Using Surface Acoustic Wave Resonators**

Yawen Fang, Yang Xu, Kaifei Kang, Benyamin Davaji, Kenji Watanabe, Takashi Taniguchi, Amit Lal, Kin Fai Mak, Jie Shan, and B. J. Ramshaw

Author(s): Yawen Fang, Yang Xu, Kaifei Kang, Benyamin Davaji, Kenji Watanabe, Takashi Taniguchi, Amit Lal, Kin Fai Mak, Jie Shan, and B. J. Ramshaw

[Phys. Rev. Lett. 130, 246201] Published Mon Jun 12, 2023

Found 1 papers in pr_res Collisional transport theory predicts particle depletion in the core of reactor-relevant fusion plasmas confined in stellarators. However, this prediction is contradicted by experiments. The conundrum has been solved by proving that turbulence provides the missing transport component that allows the reconciling of theory and experiment.

Date of feed: Tue, 13 Jun 2023 03:17:02 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]+) **Prevention of core particle depletion in stellarators by turbulence**

H. Thienpondt, J. M. García-Regaña, I. Calvo, J. A. Alonso, J. L. Velasco, A. González-Jerez, M. Barnes, K. Brunner, O. Ford, G. Fuchert, J. Knauer, E. Pasch, L. Vanó, and and the Wendelstein 7-X Team

Author(s): H. Thienpondt, J. M. García-Regaña, I. Calvo, J. A. Alonso, J. L. Velasco, A. González-Jerez, M. Barnes, K. Brunner, O. Ford, G. Fuchert, J. Knauer, E. Pasch, L. Vanó, and and the Wendelstein 7-X Team

[Phys. Rev. Research 5, L022053] Published Mon Jun 12, 2023

Found 1 papers in nano-lett

Date of feed: Mon, 12 Jun 2023 21:12:57 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+) **[ASAP] Edge Channel Transmission through a Quantum Point Contact in the Two-Dimensional Topological Insulator Cadmium Arsenide**

Simon Munyan, Arman Rashidi, Alexander C. Lygo, Robert Kealhofer, and Susanne StemmerNano LettersDOI: 10.1021/acs.nanolett.3c01263