Found 46 papers in cond-mat Layered two-dimensional dichalcogenides are potential candidates for
post-silicon electronics. Here, we report insightfully experimental and
theoretical studies on the fundamental Coulomb screening and scattering effects
in these correlated systems, in response to the changes of three crucial
Coulomb factors, including electric permittivity, interaction length, and
density of Coulomb impurities. We systematically collect and analyze the trends
of electron mobility with respect to the above factors, realized by synergic
modulations on channel thicknesses and gating modes in dual-gated MoS2
transistors with asymmetric dielectric cleanliness. Strict configurative form
factors are developed to capture the subtle parametric changes across
dimensional crossover. A full diagram of the carrier scattering mechanisms, in
particular on the pronounced Coulomb scattering, is unfolded. Moreover, we
clarify the presence of up to 40% discrepancy in mobility by considering the
permittivity modification across dimensional crossover. The understanding is
useful for exploiting atomically thin body transistors for advanced
electronics.
In a recent paper (arXiv:2206.05152v4), using the exact diagonalization
technique, I calculated the energy and other physical properties (electron
density, pair correlation function) of a system of $N\le 7$ two-dimensional
electrons at the Landau level filling factor $\nu=1/3$, and showed that the
variational many-body wave function proposed for this filling factor by
Laughlin is far from the true ground state. In this paper I continue to study
exact properties of a small ($N\le 7$) system of two-dimensional electrons
lying on the lowest Landau level. I analyze the energies and electron densities
of the systems with $N\le 7$ electrons continuously as a function of the
magnetic field in the range $1/4\lesssim\nu<1$. The physical mechanisms of the
appearance of energy gaps in many-particle electron spectra are elucidated. The
results obtained clarify the true nature of the ground and excited states of
the considered systems.
Transition metal dichalcogenide superlattices provide an exciting new
platform for exploring and understanding a variety of phases of matter. The
moir\'e continuum Hamiltonian, of two-dimensional jellium in a modulating
potential, provides a fundamental model for such systems. Accurate computations
with this model are essential for interpreting experimental observations and
making predictions for future explorations. In this work, we combine two
complementary quantum Monte Carlo (QMC) methods, phaseless auxiliary field
quantum Monte Carlo and fixed-phase diffusion Monte Carlo, to study the ground
state of this Hamiltonian. We observe a metal-insulator transition between a
paramagnetic and a $120^\circ$ N\'eel ordered state as the moir\'e potential
depth and the interaction strength are varied. We find significant differences
from existing results by Hartree-Fock and exact diagonalization studies. In
addition, we benchmark density-functional theory, and suggest an optimal hybrid
functional which best approximates our QMC results.
A rapidly rotating Bose gas in the quantum Hall limit is usually associated
with a melted vortex lattice. In this work, we report a self-bound and visible
triangular vortex lattice without melting for a two-dimensional Bose-Bose
droplet rotating in the quantum Hall limit, i.e., with rotation frequency
$\Omega$ approaching the trapping frequency $\omega$. Increasing $\Omega$ with
respect to interaction strength $U$, we find a smooth crossover of vortex
lattice droplet from a needling regime, as featured by small vortex cores and
an equilibrium flat-top surface, to the lowest-Landau-level regime with
Gaussian-extended cores spreading over the whole surface. The surface density
of such rotating droplet is higher than that of a static one, and their ratio
is found to be a universal function of $\Omega/U$. We have demonstrated these
results by both numerical and variational methods. The results pave the way for
future experimental exploration of rapidly rotating ultracold droplets into the
quantum Hall limit.
The analysis of waiting times of electron transfers has recently become
experimentally accessible owing to advances in noninvasive probes working in
the short-time regime. We study electron waiting times in a topological Andreev
interferometer: a superconducting loop with controllable phase difference
connected to a quantum spin Hall edge. The edge state helicity enables the
transfer of electrons and holes into separate leads, with transmission
controlled by the loop's phase difference $\phi$. In this setup, a topological
phase transition with emerging Majorana bound states occurs at $\phi=\pi$. The
waiting times for electron transfers across the junction are sensitive to the
phase transition, but are uncorrelated for all $\phi$. By contrast, in the
topological phase, the waiting times of Andreev-scattered holes show a strong
correlation and the crossed (hole-electron) distributions feature a unique
behavior. Both effects exclusively result from the presence of Majorana bound
states. Consequently, electron waiting times could circumvent some of the
challenges for detecting topological superconductivity and Majorana states
beyond conductance signatures.
Quantum interference is studied in a three-band model of pseudospin-one
fermions in the $\alpha-\mathcal{T}_3$ lattice. We derive a general formula for
magnetoconductivity that predicts a rich crossover between weak localization
(WL) and weak antilocalization (WAL) in various scenarios. Recovering the known
results for graphene ($\alpha=0$), we remarkably discover that WAL is notably
enhanced when one deviates slightly from the graphene lattice, i.e. when
$\alpha>0$, even though Berry's phase is no longer $\pi$. This is attributed to
the presence of multiple Cooperon channels. Upon further increasing $\alpha$, a
crossover to WL occurs that is maximal for the case of the Dice lattice
($\alpha=1$). Our work distinctly underscores the role of non-trivial band
topology in the localization properties of electrons confined to the
two-dimensional $\alpha-\mathcal{T}_3$ lattice.
We study universal traits which emerge both in real-world complex datasets,
as well as in artificially generated ones. Our approach is to analogize data to
a physical system and employ tools from statistical physics and Random Matrix
Theory (RMT) to reveal their underlying structure. We focus on the
feature-feature covariance matrix, analyzing both its local and global
eigenvalue statistics. Our main observations are: (i) The power-law scalings
that the bulk of its eigenvalues exhibit are vastly different for uncorrelated
random data compared to real-world data, (ii) this scaling behavior can be
completely recovered by introducing long range correlations in a simple way to
the synthetic data, (iii) both generated and real-world datasets lie in the
same universality class from the RMT perspective, as chaotic rather than
integrable systems, (iv) the expected RMT statistical behavior already
manifests for empirical covariance matrices at dataset sizes significantly
smaller than those conventionally used for real-world training, and can be
related to the number of samples required to approximate the population
power-law scaling behavior, (v) the Shannon entropy is correlated with local
RMT structure and eigenvalues scaling, and substantially smaller in strongly
correlated datasets compared to uncorrelated synthetic data, and requires fewer
samples to reach the distribution entropy. These findings can have numerous
implications to the characterization of the complexity of data sets, including
differentiating synthetically generated from natural data, quantifying noise,
developing better data pruning methods and classifying effective learning
models utilizing these scaling laws.
The Quantum Hall Effect (QHE) is the prototypical realization of a
topological state of matter. It emerges from a subtle interplay between
topology, interactions, and disorder. The disorder enables the formation of
localized states in the bulk that stabilize the quantum Hall states with
respect to the magnetic field and carrier density. Still, the details of the
localized states and their contribution to transport remain beyond the reach of
most experimental techniques. Here, we describe an extensive study of the
bulk's heat conductance. Using a novel 'multi-terminal' device, we separate the
longitudinal thermal conductance (due to bulk's contribution) $\kappa_{xx}T$
from the two-terminal value $\kappa_{2T}T$, by eliminating the contribution of
the edge modes. We find that when the field is tuned away from the conductance
plateau center, the electronic states of the bulk conduct heat efficiently
while the bulk remains electrically insulating. For fragile fractional states,
such as the non-Abelian $\nu=5/2$, we observe a finite $\kappa_{xx}T$
throughout the plateau. We identify the localized states as the cause of the
finite $\kappa_{xx}T$ and propose a theoretical model which qualitatively
explains our findings.
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.
We determined the mineral-melt partition coefficients (Di's) and the
compositional and/or temperature dependency between grossite, melilite,
hibonite, olivine and Ca-, Al-inclusion (CAI)-type liquids for a number of
light (LE), high field strength (HFSE), large ion lithophile (LILE), and rare
earth (REE) elements including Li, Be, B, Sr, Zr, Nb, Ba, La, Ce, Eu, Dy, Ho,
Yb, Hf, Ta, Th. A series of isothermal crystallization experiments was
conducted at 5 kbar pressure and IW+1 in graphite capsules. The starting
compositions were selected based on the calculated and experimentally confirmed
phase relations during condensation in CI dust-enriched systems (Ebel and
Grossman, 2000; Ebel, 2006; Ustunisik et al., 2014). Partition coefficients
between melt and gehlenite, hibonite, and grossite show that the trace element
budget of igneous CAIs is controlled by these three major Al-bearing phases in
addition to pyroxene. In general, LE, LILE, REE, and HFSE partition
coefficients (by mass) decrease in the order of Di(Gehlenite-Melt) >
Di(Hibonite-Melt) > Di(Grossite-Melt). Results suggest that Di(Gehlenite-Melt)
vary by a factor of 2-3 in different melt compositions at the same T (~1500 C).
Increased melt Al and Ca, relative to earlier work, increases the compatibility
of Di(Gehlenite-Melt), and also the compatibility of Di(Hibonite-Melt),
especially for La and Ce. Olivine partitioning experiments confirm that olivine
contribution to the trace element budget of CAIs is small due to the low
Di(Olivine-Melt) at a range of temperatures while D-Eu, Yb(Olivine-Melt) are
sensitive to changes in T and oxygen fugacity. The development of a predictive
model for partitioning in CAI-type systems would require more experimental data
and the use of analytical instruments capable of obtaining single phase
analyses for crystals < 5 micron.
Magnetic skyrmions have so far been treated as two-dimensional spin
structures characterized by a topological winding number describing the
rotation of spins across the skyrmion. However, in real systems with a finite
thickness of the material being larger than the magnetic exchange length, the
skyrmion spin texture extends into the third dimension and cannot be assumed as
homogeneous. Using soft x-ray laminography we reconstruct with about 20nm
spatial (voxel) resolution the full three-dimensional spin texture of a
skyrmion in an 800 nm diameter and 95 nm thin disk patterned into a trilayer
[Ir/Co/Pt] thin film structure. A quantitative analysis finds that the
evolution of the radial profile of the topological skyrmion number and the
chirality is non-uniform across the thickness of the disk. Estimates of local
micromagnetic energy densities suggest that the changes in topological profile
are related to non-uniform competing energetic interactions. Theoretical
calculations and micromagnetic simulations are consistent with the experimental
findings. Our results provide the foundation for nanoscale magnetic metrology
for future tailored spintronics devices using topology as a design parameter,
and have the potential to reverse-engineer a spin Hamiltonian from macroscopic
data, tying theory more closely to experiment.
This work represents an extension of mesoscale particle-based modeling of
electrophoretic deposition (EPD), which has relied exclusively on pairwise
interparticle interactions described by Derjaguin-Landau-Verwey-Overbeek (DLVO)
theory. With this standard treatment, particles continuously move and interact
via excluded volume and electrostatic pair potentials under the influence of
external fields throughout the EPD process. The physics imposed by DLVO theory
may not be appropriate to describe all systems, considering the vast material,
operational, and application space available to EPD. As such, we present three
modifications to standard particle-based models, each rooted in the ability to
dynamically change interparticle interactions as simulated deposition
progresses. This approach allows simulations to capture charge transfer and/or
irreversible adsorption based on tunable parameters. We evaluate and compare
simulated deposits formed under new physical assumptions, demonstrating the
range of systems that these adaptive physics models may capture.
The paper provides important insights into understanding the factors that
influence tie strength in social networks. Using local network measures that
take into account asymmetry of social interactions we show that the observed
tie strength is a kind of compromise, which depends on the relative strength of
the tie as seen from its both ends. This statement is supported by the
Granovetter-like, strongly positive weight-topology correlations, in the form
of a power-law relationship between the asymmetric tie strength and asymmetric
neighbourhood overlap, observed in three different real coauthorship networks
and in a synthetic model of scientific collaboration. This observation is
juxtaposed against the current misconception that coauthorship networks, being
the proxy of scientific collaboration networks, contradict the Granovetter's
strength of weak ties hypothesis, and the reasons for this misconception are
explained. Finally, by testing various link similarity scores, it is shown that
taking into account the asymmetry of social ties can remarkably increase the
efficiency of link prediction methods. The perspective outlined also allows us
to comment on the surprisingly high performance of the resource allocation
index -- one of the most recognizable and effective local similarity scores --
which can be rationalized by the strong triadic closure property, assuming that
the property takes into account the asymmetry of social ties.
Topological semimetals in BaAl4-type structure have shown many interesting
behaviors, such as charge density wave (CDW) in SrAl4 and EuAl4, but not the
isostructural and isovalent BaAl4, SrGa4 and BaGa4, although they all host
Dirac points and nodal line Dirac-like dispersion. Here using Wannier functions
based on density functional theory, we have calculated the susceptibility
functions with millions of k-points to reach the small q-vector and study the
origin and driving force behind the CDW. Our comparative study reveals that the
origin of the CDW in SrAl4 and EuAl4 is the strong electron-phonon coupling
interaction for the transverse acoustic mode at small q-vector along the
{\Gamma}-Z direction besides the maximum of the real part of the susceptibility
function from the nested Fermi surfaces of the Dirac-like bands, which explains
well the absence of CDW in the other three closely related compounds in a good
agreement with experiment.
We show that the spontaneous emission rate of the interlayer excitons in a
twisted WSe2-MoSe2 heterobilayer can be precisely tailored in a low-temperature
open optical microcavity via the Purcell effect. We engineer the local density
of optical states in our resonator structures in two complementary experimental
settings. In the first approach, we utilize an ultra-low quality factor planar
vertical cavity structure, which develops multiple longitudinal modes that can
be consecutively brought to resonance with the broad interlayer exciton
spectrum of our heterostructure. Time-resolved photoluminescence measurements
reveal that the interlayer exciton lifetime can thus be periodically tuned with
an amplitude of around 100 ps. The resulting oscillations of the exciton
lifetime allows us to extract a free-space radiative exciton lifetime of 2.2 ns
and an approximately 15 % quantum efficiency of the interlayer excitons. We
subsequently engineered the local density of optical states by introducing a
spatially confined and fully spectrally tunable Tamm-plasmon resonance. The
dramatic redistribution of the local optical modes in this setting allows us to
encounter a profound inhibition of spontaneous emission of the interlayer
excitons by a factor of 3.3. Our results will further boost the cavity-mediated
collective emission phenomena such as super-radiance. We expect that
specifically engineering the inhibition of radiation from moire excitons is a
powerful tool to steer their thermalization, and eventually their condensation
into coherent condensate phases.
The capability to finely tailor material thickness with simultaneous atomic
precision and non-invasivity would be useful for constructing quantum platforms
and post-Moore microelectronics. However, it remains challenging to attain
synchronized controls over tailoring selectivity and precision. Here we report
a protocol that allows for non-invasive and atomically digital etching of van
der Waals transition-metal dichalcogenides through selective alloying via
low-temperature thermal diffusion and subsequent wet etching. The mechanism of
selective alloying between sacrifice metal atoms and defective or pristine
dichalcogenides is analyzed with high-resolution scanning transmission electron
microscopy. Also, the non-invasive nature and atomic level precision of our
etching technique are corroborated by consistent spectral, crystallographic and
electrical characterization measurements. The low-temperature charge mobility
of as-etched MoS$_2$ reaches up to $1200\,$cm$^{2}\cdot$V$^{-1}\cdot$s$^{-1}$,
comparable to that of exfoliated pristine counterparts. The entire protocol
represents a highly precise and non-invasive tailoring route for material
manipulation.
Now-a-days, the development of clean and green energy sources is the prior
interest of research due to increasing global energy demand and extensive usage
of fossil fuels that create pollutants. Hydrogen has the highest energy density
by weight among all chemical fuels. For the commercial-scale production of
hydrogen, water electrolysis is the best method which in turn requires an
efficient, cost-effective and earth-abundant electrocatalyst. Recent studies
have shown that the 2D Janus TMDs are highly effective in the electrocatalytic
activity for HER. Herein we report a 2D monolayer WSeTe Janus TMD
electrocatalyst for HER. We studied the electronic properties of 2D monolayer
WSeTe Janus TMD using periodic DFT calculations, and the direct electronic band
gap was obtained to be 2.39 eV. After the calculations of electronic
properties, we explored the HER intermediates including various transition
state structures (Volmer TS, Heyrovsky TS, and Tafel TS) using a molecular
cluster model of WSeTe noted as W10Se9Te12. The present calculations revealed
that the 2D monolayer WSeTe Janus TMD is a potential electrocatalyst for HER.
It has the lowest energy barriers for all the TSs among other TMDs, such as
MoS2, Mn-MoS2, MoSSe, etc. The calculated Heyrovsky energy barrier (= 8.72
kcal.mol-1) for the Volmer-Heyrovsky mechanism is larger than the Tafel energy
barrier (=3.27 kcal.mol-1) in the Volmer-Tafel mechanism. Hence our present
study suggests that the formation of H2 is energetically more favorable via the
Vomer-Tafel mechanism. This work helps shed light on the rational design of
effective HER catalysts.
The large bandgap and strong covalent bonds of hexagonal boron nitride (hBN)
had long been thought to be chemically inert. Due to its inertness with
saturated robust covalent bonds, the pristine 2D monolayer hBN cannot be
functionalized for applications of energy conversion. Therefore, it is
necessary to make the 2D hBN chemically reactive for potential applications.
Here, we have computationally designed a single nitrogen (N) and boron (B)
di-vacancy of the 2D monolayer hBN, noted by VBN defective-BN (d-BN), to
activate the chemical reactivity, which is an effective strategy to use the
d-BN for potential applications. Single Pt atom absorbed on the defective area
of the VBN d-BN acts as a single-atom catalyst which exhibits distinctive
performances for O2 reduction reaction (ORR). First-principles based
dispersion-corrected periodic hybrid Density Functional Theory (DFT-D) method
has been employed to investigate the equilibrium structure and properties of
the Pt-absorbed 2D defective boron nitride (Pt-d-BN). The present study shows
the semiconducting character of Pt-d-BN with an electronic bandgap of 1.30 eV,
which is an essential aspect of the ORR. The ORR mechanism on the surface of 2D
monolayer Pt-d-BN follows a 4e-reduction route because of the low barriers to
OOH formation and dissociation, H2O2 instability and water production at the
Pt-d-BN surface. Here, both the dissociative and associative ORR mechanisms
have been investigated, and it is found that results for both mechanisms with
the ORR pathways are almost equally favorable. Therefore, it can be mentioned
here that the 2D monolayer Pt-d-BN exhibits a high selectivity for the
four-electron reduction pathway. According to the calculations of the relative
adsorption energy of each step in ORR, the Pt-d-BN is anticipated to exhibit
substantial catalytic activity.
A non-iterative method is presented to calculate the closest Wannier
functions (CWFs) to a given set of localized guiding functions, such as atomic
orbitals, hybrid atomic orbitals, and molecular orbitals, based on minimization
of a distance measure function. It is shown that the minimization is directly
achieved by a polar decomposition of a projection matrix via singular value
decomposition, making iterative calculations and complications arising from the
choice of the gauge irrelevant. The disentanglement of bands is inherently
addressed by introducing a smoothly varying window function and a greater
number of Bloch functions, even for isolated bands. In addition to atomic and
hybrid atomic orbitals, we introduce embedded molecular orbitals in molecules
and bulks as the guiding functions, and demonstrate that the Wannier
interpolated bands accurately reproduce the targeted conventional bands of a
wide variety of systems including Si, Cu, the TTF-TCNQ molecular crystal, and a
topological insulator of Bi$_2$Se$_3$. We further show the usefulness of the
proposed method in calculating effective atomic charges. These numerical
results not only establish our proposed method as an efficient alternative for
calculating WFs, but also suggest that the concept of CWFs can serve as a
foundation for developing novel methods to analyze electronic structures and
calculate physical properties.
Efficient and sustainable techniques for separating water-methanol mixtures
are in high demand in the industry. Recent studies have revealed that membranes
and 2D materials could achieve such separation. In our research, we explore the
impact of a nanoconfining graphene slit-pore on the dynamics and structure of
water-methanol mixtures. By Molecular Dynamics simulations of a coarse-grained
model for water mixtures containing up to 25% methanol, we show that, for
appropriate pore sizes, water tends to occupy the center of the pore. In
contrast, methanol's apolar moiety accumulates near the hydrophobic walls.
Additionally, modifying the pore's width leads to a non-monotonic change in the
diffusivity of each component. However, water always diffuses faster than
methanol, implying that it should be possible to identify an optimal
configuration for water-methanol separation based on physical mechanisms. Our
calculations indicate that one of the more effective pore sizes, 12.5{\AA}, is
also mechanically stable, minimizing the energy cost of a possible filtering
membrane.
Resistivity measurements are widely exploited to uncover electronic
excitations and phase transitions in metallic solids. While single crystals are
preferably studied to explore crystalline anisotropies, these usually cancel
out in polycrystalline materials. Here we show that in polycrystalline
Mn3Zn0.5Ge0.5N with non-collinear antiferromagnetic order, changes in the
diagonal and, rather unexpected, off-diagonal components of the resistivity
tensor occur at low temperatures indicating subtle transitions between magnetic
phases of different symmetry. This is supported by neutron scattering and
explained within a phenomenological model which suggests that the phase
transitions in magnetic field are associated with field induced topological
orbital momenta. The fact that we observe transitions between spin phases in a
polycrystal, where effects of crystalline anisotropy are cancelled suggests
that they are only controlled by exchange interactions. The observation of an
off-diagonal resistivity extends the possibilities for realising
antiferromagnetic spintronics with polycrystalline materials.
Defects in the lattice are of primal importance to tune graphene chemical,
thermal and electronic properties. Electron-beam irradiation is an easy method
to induce defects in graphene following pre-designed patterns, but no
systematic study of the time evolution of the resulting defects is available.
In this paper, the change over time of defected sites created in graphene with
low-energy ($\leq 20$ keV) electron irradiation is studied both experimentally
via micro-Raman spectroscopy for a period of $6\times 10^3$ hours and through
molecular dynamics simulations. During the first 10 h, the structural defects
are stable at the highest density value. Subsequently, the crystal partially
reconstructs, eventually reaching a stable, less defected condition after more
than one month. The simulations allow the rationalization of the processes at
the atomic level and confirm that the irradiation induces composite clusters of
defects of different nature rather than well-defined nanoholes as in the case
of high-energy electrons. The presented results identify the timescale of the
defects stability, thus establishing the operability timespan of engineerable
defect-rich graphene devices with applications in nanoelectronics. Moreover,
long-lasting chemical reactivity of the defective graphene is pointed out. This
property can be exploited to functionalize graphene for sensing and energy
storage applications.
The non-equilibrium dynamics of domain wall initial states in a classical
anisotropic Heisenberg chain exhibits a striking coexistence of apparently
linear and non-linear behaviours: the propagation and spreading of the domain
wall can be captured quantitatively by \textit{linear}, i.e. non-interacting,
spin wave theory absent its usual justifications; while, simultaneously, for a
wide range of easy-plane anisotropies, emission can take place of stable
topological solitons -- a process and objects intrinsically associated with
interactions and non-linearities. The easy-axis domain wall only has transient
dynamics, the isotropic one broadens diffusively, while the easy-plane one
yields a pair of ballistically counter-propagating domain walls which,
unusually, broaden \textit{subdiffusively}, their width scaling as $t^{1/3}$.
We study the effect of electric stress, gas pressure and gas type on the
hysteresis in the transfer characteristics of monolayer molybdenum disulfide
(MoS2) field effect transistors. The presence of defects and point vacancies in
the MoS2 crystal structure facilitates the adsorption of oxygen, nitrogen,
hydrogen or methane, which strongly affect the transistor electrical
characteristics. Although the gas adsorption does not modify the conduction
type, we demonstrate a correlation between hysteresis width and adsorption
energy onto the MoS2 surface. We show that hysteresis is controllable by
pressure and/or gas type. Hysteresis features two well-separated current
levels, especially when gases are stably adsorbed on the channel, which can be
exploited in memory devices.
The dielectric properties of Bi$_2$Te$_3$, a layered compound crystallizing
in a rhombohedral structure, are investigated by means of first-principles
calculations at the random phase approximation level. A special attention is
devoted to the anisotropy in the dielectric function and to the local field
effects that strongly renormalize the optical properties in the UV-visible
range when the electric field is polarized along the stacking axis.
Furthermore, both the Born effective charges for each atom and the zone center
phonon frequencies and eigenvectors needed to describe the dielectric response
in the infrared range are computed. Our theoretical near-normal incidence
reflectivity spectras in both the UV-visible and infrared range are in fairly
good agreement with the experimental spectras, provided that the free carriers
Drude contribution arising from defects is included in the infrared response.
The anisotropic plasmon frequencies entering the Drude model are computed
within the rigid band approximation, suggesting that a measurement of the
reflectivity in the infrared range for both polarizations might allow to infer
not only the type of doping but also the level of doping.
We report on the observation of a nonlinear intensity dependence of the
terahertz radiation induced ratchet effects in bilayer graphene with asymmetric
dual grating gate lateral lattices. These nonlinear ratchet currents are
studied in structures of two designs with dual grating gate fabricated on top
of encapsulated bilayer graphene and beneath it. The strength and sign of the
photocurrent can be controllably varied by changing the bias voltages applied
to individual dual grating subgates and the back gate. The current consists of
contributions insensitive to the radiation's polarization state, defined by the
orientation of the radiation electric field vector with respect to the dual
grating gate metal stripes, and the circular ratchet sensitive to the radiation
helicity. We show that intense terahertz radiation results in a nonlinear
intensity dependence caused by electron gas heating. At room temperature the
ratchet current saturates at high intensities of the order of hundreds to
several hundreds of kWcm$^{-2}$. At $T = 4 {\rm K}$, the nonlinearity manifests
itself at intensities that are one or two orders of magnitude lower, moreover,
the photoresponse exhibits a complex dependence on the intensity, including a
saturation and even a change of sign with increasing intensity. This complexity
is attributed to the interplay of the Seebeck ratchet and the dynamic carrier
density redistribution, which feature different intensity dependencies and a
nonlinear behavior of the sample's conductivity induced by electron gas
heating. Our study demonstrates that graphene-based asymmetric dual grating
gate devices can be used as terahertz detectors at room temperature over a wide
dynamic range, spanning many orders of magnitude of terahertz radiation power.
Therefore, their integration together with current-driven read-out electronics
is attractive for the operation with high-power pulsed sources.
Quantized adiabatic transport can occur when a system is slowly modulated
over time. In most realizations however, the efficiency of such transport is
reduced by unwanted dissipation, back-scattering, and non-adiabatic effects. In
this work, we realize a topological adiabatic pump in an electrical circuit
network that supports remarkably stable and long-lasting pumping of a voltage
signal. We further characterize the topology of our system by deducing the
Chern number from the measured edge band structure. To achieve this, the
experimental setup makes use of active circuit elements that act as
time-variable voltage-controlled inductors.
Van der Waals atomic solids of noble gases on metals at cryogenic
temperatures were the first experimental examples of two-dimensional systems.
Recently such structures have also been created on under encapsulation by
graphene, allowing studies at elevated temperatures through scanning tunneling
microscopy. However, for this technique, the encapsulation layer often obscures
the actual arrangement of the noble gas atoms. Here, we create Kr and Xe
clusters in between two suspended graphene layers, and uncover their atomic
structure through direct imaging with transmission electron microscopy. We show
that small crystals (N<9) arrange as expected based on the simple
non-directional van der Waals interaction. Crystals larger than this show some
deviations for the outermost atoms, possibly enabled by deformations in the
encapsulating graphene lattice. We further discuss the dynamics of the clusters
within the graphene sandwich, and show that while all Xe clusters with up to at
least N=51 remain solid, Kr clusters with already N~16 turn occasionally fluid
under our experimental conditions with an estimated pressure of ca. 0.3 GPa.
This study opens a way for the so-far unexplored frontier of encapsulated
two-dimensional van der Waals solids with exciting possibilities for condensed
matter physics research that expands from quantum structures to biological
applications.
The topology of the Brillouin zone, foundational in topological physics, is
always assumed to be a torus. We theoretically report the construction of
Brillouin real projective plane ($\mathrm{RP}^2$) and the appearance of
quadrupole insulating phase, which are enabled by momentum-space nonsymmorphic
symmetries stemming from $\mathbb{Z}_2$ synthetic gauge fields. We show that
the momentum-space nonsymmorphic symmetries quantize bulk polarization and
Wannier-sector polarization nonlocally across different momenta, resulting in
quantized corner charges and an isotropic binary bulk quadrupole phase diagram,
where the phase transition is triggered by a bulk energy gap closing. Under
open boundary conditions, the nontrivial bulk quadrupole phase manifests either
trivial or nontrivial edge polarization, resulting from the violation of
momentum-space nonsymmorphic symmetries under lattice termination. We present a
concrete design for the $\mathrm{RP}^2$ quadrupole insulator based on acoustic
resonator arrays and discuss its feasibility in optics, mechanics, and
electrical circuits. Our results show that deforming the Brillouin manifold
creates opportunities for realizing high-order band topology.
We investigate optically induced magnetization in Floquet-Weyl semimetals
generated by irradiation of a circularly-polarized continuous-wave laser from
the group II-V narrow gap semiconductor Zn$_3$As$_2$ in a theoretical manner.
Here, this trivial and nonmagnetic crystal is driven by the laser with a nearly
resonant frequency with a band gap to generate two types of Floquet-Weyl
semimetal phases composed of different spin states. These two phases host
nontrivial two-dimensional surface states pinned to the respective pairs of the
Weyl points. By numerically evaluating the laser-induced transient
carrier-dynamics, it is found that both spins are distributed in an uneven
manner on the corresponding surface states, respectively, due to significantly
different excitation probabilities caused by the circularly-polarized laser
with the nearly resonant frequency. It is likely that such spin-polarized
surface states produce surface magnetization, and furthermore the inverse
Faraday effect also contributes almost as much as the spin magnetization. To be
more specific, excited carries with high density of the order of $10^{21}\:
{\rm cm}^{-3}$ are generated by the laser with electric field strength of a few
MV/cm to result in the surface magnetization that becomes asymptotically
constant with respect to time, around 1 mT. The magnitude and the direction of
it depend sharply on both of the intensity and frequency of the driving laser,
which would be detected by virtue of the magneto-optic Kerr effect.
Topological excitations or defects such as solitons are ubiquitous throughout
physics, supporting numerous interesting phenomena like zero energy modes with
exotic statistics and fractionalized charges. In this paper, we study such
objects through the lens of symmetry-resolved entanglement entropy.
Specifically, we compute the charge-resolved entanglement entropy for a single
interval in the low-lying states of the Su-Schrieffer-Heeger model in the
presence of topological defects. Using a combination of exact and asymptotic
analytic techniques, backed up by numerical analysis, we find that, compared to
the unresolved counterpart and to the pure system, a richer structure of
entanglement emerges. This includes a redistribution between its
configurational and fluctuational parts due to the presence of the defect and
an interesting interplay with entanglement equipartition. In particular, in a
subsystem that excludes the defect, equipartition is restricted to charge
sectors of the same parity, while full equipartition is restored only if the
subsystem includes the defect, as long as the associated zero mode remains
unoccupied. Additionally, by exciting zero modes in the presence of multiple
defects, we observe a significant enhancement of entanglement in certain charge
sectors, due to charge splitting on the defects. These constitute two different
scenarios featuring the rare breakdown of entanglement equipartition. We unveil
the joint mechanism underlying these two scenarios by relating them to
degeneracies in the spectrum of the charge-resolved entanglement Hamiltonian.
We study equilibrium configurations in spherical droplets of nematic liquid
crystal with strong radial anchoring, within the Landau-de Gennes theory with a
sixth-order bulk potential. The sixth-order potential predicts a bulk biaxial
phase for sufficiently low temperatures, which the conventional fourth-order
potential cannot predict. We prove the existence of a radial hedgehog solution,
which is a uniaxial solution with a single isotropic point defect at the
droplet centre, for all temperatures and droplet sizes, and prove that there is
a unique radial hedgehog solution for moderately low temperatures, but not deep
in the nematic phase. We numerically compute critical points of the Landau-de
Gennes free energy with the sixth order bulk potential, with rotational and
mirror symmetry, and find at least two competing stable critical points: the
biaxial torus and split core solutions, which have biaxial regions around the
centre, for low temperatures. The size of the biaxial regions increases with
decreasing temperature. We also compare the properties of the radial hedgehog
solution with the fourth-order and sixth-order potentials respectively, in
terms of the Morse indices as a function of the temperature and droplet radius;
the role of the radial hedgehog solution as a transition state in switching
processes; and compare the bifurcation plots with temperature, with the fourth-
and sixth-order potentials. Overall, the sixth-order potential has a
stabilising effect on biaxial critical points and a de-stabilising effect on
uniaxial critical points and we discover an altogether novel bulk biaxial
critical point of the Landau-de Gennes energy with the sixth-order potential,
for which the bulk biaxiality is driven by the sixth-order potential.
The reliability of fast repeated erasures is studied experimentally and
theoretically in a 1-bit underdamped memory. The bit is encoded by the position
of a micro-mechanical oscillator whose motion is confined in a double well
potential. To contain the energetic cost of fast erasures, we use a resonator
with high quality factor $Q$: the erasure work $\mathcal{W}$ is close to
Landauer's bound, even at high speed. The drawback is the rise of the system's
temperature $T$ due to a weak coupling to the environment. Repeated erasures
without letting the memory thermalize between operations result in a continuous
warming, potentially leading to a thermal noise overcoming the barrier between
the potential wells. In such case, the reset operation can fail to reach the
targeted logical state. The reliability is characterized by the success rate
$R^{\textrm{s}}_i$ after $i$ successive operations. $\mathcal{W}$, $T$ and
$R^{\textrm{s}}_i$ are studied experimentally as a function of the erasure
speed. Above a velocity threshold, $T$ soars while $R^{\textrm{s}}_i$
collapses: the reliability of too fast erasures is low. These experimental
results are fully justified by two complementary models. We demonstrate that
$Q\simeq 10$ is optimal to contain energetic costs and maintain high
reliability standards for repeated erasures at any speed.
Optical box traps for cold atoms offer new possibilities for quantum-gas
experiments. Building on their exquisite spatial and temporal control, we
propose to engineer system-reservoir configurations using box traps, in view of
preparing and manipulating topological atomic states in optical lattices.
First, we consider the injection of particles from the reservoir to the system:
this scenario is shown to be particularly well suited to activate
energy-selective chiral edge currents, but also, to prepare fractional Chern
insulating ground states. Then, we devise a practical evaporative-cooling
scheme to effectively cool down atomic gases into topological ground states.
Our open-system approach to optical-lattice settings provides a new path for
the investigation of ultracold quantum matter, including strongly-correlated
and topological phases.
We characterize the magnetic ground state of the topological kagome metal
GdV$_6$Sn$_6$ via resonant X-ray diffraction. Previous magnetoentropic studies
of GdV$_6$Sn$_6$ suggested the presence of a modulated magnetic order distinct
from the ferromagnetism that is easily polarized by the application of a
magnetic field. Diffraction data near the Gd-$L_2$ edge directly resolve a
$c$-axis modulated spin structure order on the Gd sublattice with an
incommensurate wave vector that evolves upon cooling toward a partial lock-in
transition. While equal moment (spiral) and amplitude (sine) modulated spin
states can not be unambiguously discerned from the scattering data, the overall
phenomenology suggests an amplitude modulated state with moments predominantly
oriented in the $ab$-plane. Comparisons to the ``double-flat" spiral state
observed in Mn-based $R$Mn$_6$Sn$_6$ kagome compounds of the same structure
type are discussed.
Tantalum ditelluride TaTe$_2$ belongs to the family of layered transition
metal dichalcogenides but exhibits a unique structural phase transition at
around 170 K that accompanies the rearrangement of the Ta atomic network from a
"ribbon chain" to a "butterfly-like" pattern. While multiple mechanisms
including Fermi surface nesting and chemical bonding instabilities have been
intensively discussed, the origin of this transition remains elusive. Here we
investigate the electronic structure of single-crystalline TaTe$_2$ with a
particular focus on its modifications through the phase transition, by
employing core-level and angle-resolved photoemission spectroscopy combined
with first-principles calculations. Temperature-dependent core-level
spectroscopy demonstrates a splitting of the Ta $4f$ core-level spectra through
the phase transition indicative of the Ta-dominated electronic state
reconstruction. Low-energy electronic state measurements further reveal an
unusual kink-like band reconstruction occurring at the Brillouin zone boundary,
which cannot be explained by Fermi surface nesting or band folding effects. On
the basis of the orbital-projected band calculations, this band reconstruction
is mainly attributed to the modifications of specific Ta $5d$ states, namely
the $d_{XY}$ orbitals (the ones elongating along the ribbon chains) at the
center Ta sites of the ribbon chains. The present results highlight the strong
orbital-dependent electronic state reconstruction through the phase transition
in this system and provide fundamental insights towards understanding complex
electron-lattice-bond coupled phenomena.
SiGe heteroepitaxial growth yields pristine host material for quantum dot
qubits, but residual interface disorder can lead to qubit-to-qubit variability
that might pose an obstacle to reliable SiGe-based quantum computing. We
demonstrate a technique to reconstruct 3D interfacial atomic structure spanning
multiqubit areas by combining data from two verifiably atomic-resolution
microscopy techniques. Utilizing scanning tunneling microscopy (STM) to track
molecular beam epitaxy (MBE) growth, we image surface atomic structure
following deposition of each heterostructure layer revealing nanosized SiGe
undulations, disordered strained-Si atomic steps, and nonconformal uncorrelated
roughness between interfaces. Since phenomena such as atomic intermixing during
subsequent overgrowth inevitably modify interfaces, we measure post-growth
structure via cross-sectional high-angle annular dark field scanning
transmission electron microscopy (HAADF-STEM). Features such as nanosized
roughness remain intact, but atomic step structure is indiscernible in $1.0\pm
0.4$~nm-wide intermixing at interfaces. Convolving STM and HAADF-STEM data
yields 3D structures capturing interface roughness and intermixing. We utilize
the structures in an atomistic multivalley effective mass theory to quantify
qubit spectral variability. The results indicate (1) appreciable valley
splitting (VS) variability of roughly $\pm$ $50\%$ owing to alloy disorder, and
(2) roughness-induced double-dot detuning bias energy variability of order
$1-10$ meV depending on well thickness. For measured intermixing, atomic steps
have negligible influence on VS, and uncorrelated roughness causes spatially
fluctuating energy biases in double-dot detunings potentially incorrectly
attributed to charge disorder.
We investigate the generation of an electric current from a temperature
gradient in a two-dimensional Weyl semimetal with anisotropy, in both the
presence and absence of a quantizing magnetic field. We show that the
anisotropy leads to doping dependences of thermopower and thermal
conductivities which are different from those in isotropic Dirac materials.
Additionally, we find that a quantizing magnetic field in such systems leads to
an interesting magnetic field dependence of the longitudinal thermopower,
resulting in unsaturated thermoelectric coefficients. Thus the results
presented here will serve as a guide to achieving high thermopower and a
thermoelectric figure-of-merit in graphene-based materials, as well as organic
conductors such as $\alpha$-(BEDT-TTF)$_2$I$_3$.
Ordered mechanical systems typically have one or only a few stable rest
configurations, and hence are not considered useful for encoding memory.
Multistable and history-dependent responses usually emerge from quenched
disorder, for example in amorphous solids or crumpled sheets. In contrast, due
to geometric frustration, periodic magnetic systems can create their own
disorder and espouse an extensive manifold of quasi-degenerate configurations.
Inspired by the topological structure of frustrated artificial spin ices, we
introduce an approach to design ordered, periodic mechanical metamaterials that
exhibit an extensive set of spatially disordered states. While our design
exploits the correspondence between frustration in magnetism and
incompatibility in meta-mechanics, our mechanical systems encompass continuous
degrees of freedom, and are hence richer than their magnetic counterparts. We
show how such systems exhibit non-Abelian and history-dependent responses, as
their state can depend on the order in which external manipulations were
applied. We demonstrate how this richness of the dynamics enables to recognize,
from a static measurement of the final state, the sequence of operations that
an extended system underwent. Thus, multistability and potential to perform
computation emerge from geometric frustration in ordered mechanical lattices
that create their own disorder.
We investigate two variants of quantum compass models (QCMs). The first, an
orbital-only honeycomb QCM, is shown to exhibit a quantum phase transition
(QPT) from a $XX$- to $ZZ$-ordered phase in the $3d$-Ising universality class,
in accord with earlier studies. In a fractionalized parton construction, this
describes a ``superfluid-Mott insulator'' transition between a higher-order
topological superfluid and the toric code, the latter described as a $p$-wave
resonating valence bond state of the partons. The second variant, the spinless
fermion QCM on a square lattice, is of interest in the context of cold-atom
lattices with higher-angular momentum states on each atom. We explore
finite-temperature orbital order-disorder transitions in the itinerant and
localized limits using complementary methods. In the itinerant limit, we
uncover an intricate temperature ($T$)-dependent dimensional crossover from a
high-$T$ quasi-$1d$ insulator-like state, via an incoherent bad-metal-like
state at intermediate $T$, to a $2d$ symmetry-broken insulator at low $T$, well
below the ``orbital'' ordering scale. Finally, we discuss how engineering
specific, tunable, and realistic perturbations in both these variants can act
as a playground for simulating a variety of exotic QPTs between topologically
ordered and trivial phases. In the cold-atom context, we propose a novel way to
engineer a possible realisation of the exotic exciton Bose liquid phase at a
QPT between a Bose superfluid and a charge density wave insulator. We argue
that advances in the design of Josephson junction arrays and manipulating
cold-atom lattices offer the hope of simulating such novel phases of matter in
the foreseeable future.
Topological monomodes have been for long as elusive as magnetic monopoles.
The latter was experimentally shown to emerge in effective descriptions of
condensed-matter systems, while the experimental exploration of the former has
largely been hindered by the complexity of the conceived setups. Here, we
present a remarkably simple model and the experimental observation of
topological monomodes generated dynamically. By focusing on non-Hermitian
one-dimensional (1D) and 2D Su-Schrieffer-Heeger (SSH) models, we theoretically
unveil the minimal configuration to realize a topological monomode upon
engineering losses and breaking of lattice symmetries. Furthermore, we classify
the systems in terms of the (non-Hermitian) symmetries that are present and
calculate the corresponding topological invariants. To corroborate the theory,
we present experiments in photonic lattices, in which a monomode is observed in
the non-Hermitian 1D and 2D SSH models, thus breaking the paradigm that
topological corner states should appear in pairs. Our findings might have
profound implications for photonics and quantum optics because topological
monomodes increase the robustness of corner states by preventing recombination.
We investigate the composite systems consisting of topological orders
separated by gapped domain walls. We derive a pair of domain-wall Verlinde
formulae, that elucidate the connection between the braiding of interdomain
excitations labeled by pairs of anyons in different domains and quasiparticles
in the gapped domain wall with their respective fusion rules. Through explicit
non-Abelian examples, we showcase the calculation of such braiding and fusion,
revealing that the fusion rules for interdomain excitations are generally
fractional or irrational. By investigating the correspondence between composite
systems and anyon condensation, we unveil the reason for designating these
fusion rules as symmetry fractionalized (irrationalized) fusion rules. Our
findings hold promise for applications across various fields, such as
topological quantum computation, topological field theory, and conformal field
theory.
Limits on a system's response to external perturbations inform our
understanding of how physical properties can be shaped by microscopic
characteristics. Here, we derive constraints on the steady-state nonequilibrium
response of physical observables in terms of the topology of the microscopic
state space and the strength of thermodynamic driving. Notably, evaluation of
these limits requires no kinetic information beyond the state-space structure.
When applied to models of receptor binding, we find that sensitivity is bounded
by the steepness of a Hill function with a Hill coefficient enhanced by the
chemical driving beyond the structural equilibrium limit.
We propose using tunneling spectroscopy with a superconducting electrode to
probe the collective modes of unconventional superconductors. The modes are
predicted to appear as peaks in dI/dV at voltages given by eV = {\omega}i/2
where {\omega}i denotes the mode frequencies. This may prove to be a powerful
tool to investigate the pairing symmetry of unconventional superconductors. The
peaks associated with the collective modes appear at fourth order in the single
particle tunneling matrix element. At the same fourth order, multiple Andreev
reflection (MAR) leads to peaks at voltage equal to the energy gaps, which, in
BCS superconductors, coincides with the expected position of the amplitude
(Higgs) mode. The peaks stemming from the collective modes of unconventional
superconductors do not suffer from this coincidence. For scanning tunneling
microscopes (STM), we estimate that the magnitude of the collective mode
contribution is smaller than the MAR contribution by the ratio of the energy
gap to the Fermi energy. Moreover, there is no access to the mode dispersion.
Conversely, for planar tunnel junctions the collective mode peak is expected to
dominate over the MAR peak, and the mode dispersion can be measured. We discuss
systems where the search for such collective modes is promising.
The skyrmion core, percolating the volume of the magnet, forms a skyrmion
string -- the topological Dirac-string-like object. Here we analyze the
nonlinear dynamics of skyrmion string in a low-energy regime by means of the
collective variables approach which we generalized for the case of strings.
Using the perturbative method of multiple scales (both in space and time), we
show that the weakly nonlinear dynamics of the translational mode propagating
along the string is captured by the nonlinear Schroedinger equation of the
focusing type. As a result, the basic "planar-wave" solution, which has a form
of a helix-shaped wave, experiences modulational instability. The latter leads
to the formation of cnoidal waves. Both types of cnoidal waves, dn- and
cn-waves, as well as the separatrix soliton solution, are confirmed by the
micromagnetic simulations. Beyond the class of the traveling-wave solutions, we
found Ma-breather propagating along the string. Finally, we proposed a
generalized approach, which enables one to describe nonlinear dynamics of the
modes of different symmetries, e.g. radially symmetrical or elliptical.
We consider the Lifshitz topological transitions and the corresponding
changes in the galvanomagnetic properties of a metal from the point of view of
the general classification of open electron trajectories arising on Fermi
surfaces of arbitrary complexity in the presence of magnetic field. The
construction of such a classification is the content of the Novikov problem and
is based on the division of non-closed electron trajectories into topologically
regular and chaotic trajectories. The description of stable topologically
regular trajectories gives a basis for a complete classification of non-closed
trajectories on arbitrary Fermi surfaces and is connected with special
topological structures on these surfaces. Using this description, we describe
here the distinctive features of possible changes in the picture of electron
trajectories during the Lifshitz transitions, as well as changes in the
conductivity behavior in the presence of a strong magnetic field. As it turns
out, the use of such an approach makes it possible to describe not only the
changes associated with stable electron trajectories, but also the most general
changes of the conductivity diagram in strong magnetic fields.

Date of feed: Wed, 28 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]+) **Coulomb screening and scattering in atomically thin transistors across dimensional crossover. (arXiv:2306.14925v1 [cond-mat.mes-hall])**

Shihao Ju, Binxi Liang, Jian Zhou, Danfeng Pan, Yi Shi, Songlin Li

**Toward a new theory of the fractional quantum Hall effect: The many-body spectra and energy gaps at $\nu<1$. (arXiv:2306.14931v1 [cond-mat.mes-hall])**

S. A. Mikhailov

**Metal-insulator transition in transition metal dichalcogenide heterobilayer: accurate treatment of interaction. (arXiv:2306.14954v1 [cond-mat.str-el])**

Yubo Yang, Miguel Morales, Shiwei Zhang

**Self-bound Vortex Lattice in a Rapidly Rotating Quantum Droplet. (arXiv:2306.14958v1 [cond-mat.quant-gas])**

Qi Gu, Xiaoling Cui

**Topological phase transition revealed by electron waiting times. (arXiv:2306.14964v1 [cond-mat.supr-con])**

Paramita Dutta, Jorge Cayao, Annica M. Black-Schaffer, Pablo Burset

**Quantum interference of pseudospin-1 fermions. (arXiv:2306.14967v1 [cond-mat.mes-hall])**

Adesh Singh, G. Sharma

**The Underlying Scaling Laws and Universal Statistical Structure of Complex Datasets. (arXiv:2306.14975v1 [cs.LG])**

Noam Levi, Yaron Oz

**Heat Conductance of the Quantum Hall Bulk. (arXiv:2306.14977v1 [cond-mat.mes-hall])**

Ron Aharon Melcer, Avigail Gil, Vladimir Umansky, Moty Heiblum, Yuval Oreg, Ady Stern, Erez Berg

**Topological triple phase transition in non-Hermitian quasicrystals with complex asymmetric hopping. (arXiv:2306.14987v1 [cond-mat.dis-nn])**

Shaina Gandhi, Jayendra N. Bandyopadhyay

**Trace Element Partitioning between CAI-Type Melts and Grossite, Melilite, Hibonite, and Olivine. (arXiv:2306.15001v1 [astro-ph.EP])**

Gokce Ustunisik, Denton S. Ebel, David Walker, Roger L. Nielsen, Marina E. Gemma

**Quantifying the Topology of Magnetic Skyrmions in three Dimensions. (arXiv:2306.15003v1 [cond-mat.mtrl-sci])**

David Raftrey, Simone Finizio, Rajesh V. Chopdekar, Scott Dhuey, Temuujin Bayaraa, Paul Ashby, Jörg Raabe, Tiffany Santos, Sinéad Griffin, Peter Fischer

**Particle-Based Simulations of Electrophoretic Deposition with Adaptive Physics Models. (arXiv:2306.15009v1 [cond-mat.mes-hall])**

John J. Karnes, Andrew J. Pascall, Christoph Rehbock, Vaijayanthi Ramesh, Marcus A. Worsley, Stephan Barcikowski, Elaine Lee, Brian Giera

**Asymmetry of social interactions and its role in link predictability: the case of coauthorship networks. (arXiv:2306.15022v1 [cs.SI])**

Kamil P. Orzechowski, Maciej J. Mrowinski, Agata Fronczak, Piotr Fronczak

**Origin of Charge Density Wave in Topological Semimetals SrAl4 and EuAl4. (arXiv:2306.15068v1 [cond-mat.mtrl-sci])**

Lin-Lin Wang, Niraj K. Nepal, Paul C. Canfield

**Controlling the radiation dynamics of MoSe2/WSe2 interlayer excitons via in-situ tuning the electromagnetic environment. (arXiv:2306.15101v1 [cond-mat.mtrl-sci])**

Bo Han, Chirag Palekar, Sven Stephan, Frederik Lohof, Alexander Steinhoff, Jens-Christian Drawer, Victor Mitryakhin, Lukas Lackner, Martin Silies, Barbara Rosa, Martin Esmann, Falk Eilenberger, Christopher Gies, Stephan Reitzenstein, Christian Schneider

**Non-invasive digital etching of van der Waals semiconductors. (arXiv:2306.15139v1 [cond-mat.mtrl-sci])**

Jian Zhou, Chunchen Zhang, Li Shi, Xiaoqing Chen Tae-Soo Kim, Minseung Gyeon, Jian Chen Jinlan Wang, Linwei Yu Xinran Wang Kibum Kang, Emanuele Orgiu, Paolo Samorì, Kenji Watanabe, Takashi Taniguchi, Kazuhito Tsukagoshi, Peng Wang, Yi Shi, Songlin Li

**Electrocatalytic Performance of 2D Monolayer WSeTe Janus Transition Metal Dichalcogenide for Highly Efficient H2 Evolution Reaction. (arXiv:2306.15249v1 [cond-mat.mtrl-sci])**

Vikash Kumar, Shrish Nath Upadhyay, Dikeshwar Halba, Srimanta Pakhira

**Platinum-absorbed Defective 2D Monolayer Boron Nitride: A Promising Electrocatalyst for O2 Reduction Reaction. (arXiv:2306.15252v1 [cond-mat.mtrl-sci])**

Lokesh Yadav, Srimanta Pakhira

**Closest Wannier functions to a given set of localized orbitals. (arXiv:2306.15296v1 [cond-mat.mtrl-sci])**

Taisuke Ozaki

**Water-methanol mixture confined in a graphene slit-pore. (arXiv:2306.15330v1 [cond-mat.soft])**

Roger Bellido-Peralta, Fabio Leoni, Carles Calero, Giancarlo Franzese

**Phase transitions associated with magnetic-field induced topological orbital momenta in a non-collinear antiferromagnet. (arXiv:2306.15332v1 [cond-mat.mtrl-sci])**

Sihao Deng, Olena Gomonay, Jie Chen, Gerda Fischer, Lunhua He, Cong Wang, Qingzhen Huang, Feiran Shen, Zhijian Tan, Rui Zhou, Ze Hu, Libor Šmejkal, Jairo Sinova, Wolfgang Wernsdorfer, Christoph Sürgers

**Operability timescale of defect-engineered graphene. (arXiv:2306.15345v1 [cond-mat.mtrl-sci])**

Nicola Melchioni, Luca Bellucci, Alessandro Tredicucci, Federica Bianco

**Domain wall dynamics in classical spin chains: free propagation, subdiffusive spreading, and topological soliton emission. (arXiv:2306.15351v1 [cond-mat.stat-mech])**

Adam J. McRoberts, Thomas Bilitewski, Masudul Haque, Roderich Moessner

**Gas dependent hysteresis in MoS$_2$ field effect transistors. (arXiv:2306.15353v1 [cond-mat.mes-hall])**

F. Urban, F. Giubileo, A. Grillo, L. Iemmo, G. Luongo, M. Passacantando, T. Foller, L. Madauß, E. Pollmann, M.P. Geller, D. Oing, M. Schleberger, A. Di Bartolomeo

**Anisotropy in the dielectric function of Bi$_2$Te$_3$ from first principles: From the UV-visible to the infrared range. (arXiv:2306.15398v1 [cond-mat.mtrl-sci])**

R. Busselez, A. Levchuk, P. Ruello, V. Juvé, B. Arnaud

**Nonlinear intensity dependence of ratchet currents induced by terahertz laser radiation in bilayer graphene with asymmetric periodic grating gates. (arXiv:2306.15405v1 [cond-mat.mes-hall])**

Erwin Mönch, Stefan Hubmann, Ivan Yahniuk, Sophia Schweiss, Vasily V. Bel'kov, Leonid E. Golub, Robin Huber, Jonathan Eroms, Kenji Watanabe, Takashi Taniguchi, Dieter Weiss, Sergey D. Ganichev

**Realizing efficient topological temporal pumping in electrical circuits. (arXiv:2306.15434v1 [cond-mat.other])**

Alexander Stegmaier, Hauke Brand, Stefan Imhof, Alexander Fritzsche, Tobias Helbig, Tobias Hofmann, Igor Boettcher, Martin Greiter, Ching Hua Lee, Gaurav Bahl, Alexander Szameit, Tobias Kießling, Ronny Thomale, Lavi K. Upreti

**Two-dimensional few-atom noble gas clusters in a graphene sandwich. (arXiv:2306.15436v1 [cond-mat.mes-hall])**

Manuel Längle, Kenichiro Mizohat, Clemens Mangler, Alberto Trentino, Kimmo Mustonen, E. Harriet Åhlgren, Jani Kotakoski

**Synthetic gauge fields enable high-order topology on Brillouin real projective plane. (arXiv:2306.15477v1 [cond-mat.mes-hall])**

Hu Jinbing, Zhuang Songlin, Yang Yi

**Laser induced surface magnetization in Floquet-Weyl semimetals. (arXiv:2306.15522v1 [cond-mat.mtrl-sci])**

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

**Charge-resolved entanglement in the presence of topological defects. (arXiv:2306.15532v1 [quant-ph])**

David X. Horvath, Shachar Fraenkel, Stefano Scopa, Colin Rylands

**The Radial Hedgehog Solution in the Landau-de Gennes Theory: Effects of the Bulk Potentials. (arXiv:2306.15563v1 [cond-mat.soft])**

Sophie McLauchlan, Yucen Han, Matthias Langer, Apala Majumdar

**Reliability and operation cost of underdamped memories during cyclic erasures. (arXiv:2306.15573v1 [cond-mat.stat-mech])**

Salambô Dago, Sergio Ciliberto, Ludovic Bellon

**The cold-atom elevator: From edge-state injection to the preparation of fractional Chern insulators. (arXiv:2306.15610v1 [cond-mat.quant-gas])**

Botao Wang, Monika Aidelsburger, Jean Dalibard, André Eckardt, Nathan Goldman

**Incommensurate Magnetic Order in the $\mathbb{Z}_2$ Kagome Metal GdV$_6$Sn$_6$. (arXiv:2306.15613v1 [cond-mat.str-el])**

Zach Porter, Ganesh Pokharel, Jong-Woo Kim, Phillip J. Ryan, Stephen D. Wilson

**Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in TaTe$_2$. (arXiv:2306.15627v1 [cond-mat.str-el])**

Natsuki Mitsuishi, Yusuke Sugita, Tomoki Akiba, Yuki Takahashi, Masato Sakano, Koji Horiba, Hiroshi Kumigashira, Hidefumi Takahashi, Shintaro Ishiwata, Yukitoshi Motome, Kyoko Ishizaka

**Utilizing multimodal microscopy to reconstruct Si/SiGe interfacial atomic disorder and infer its impacts on qubit variability. (arXiv:2306.15646v1 [cond-mat.mtrl-sci])**

Luis Fabián Peña, Justine C. Koepke, J. Houston Dycus, Andrew Mounce, Andrew D. Baczewski, N. Tobias Jacobson, Ezra Bussmann

**Thermopower in an anisotropic two-dimensional Weyl semimetal. (arXiv:1811.04952v4 [cond-mat.mes-hall] UPDATED)**

Ipsita Mandal, Kush Saha

**Emergent Disorder and Mechanical Memory in Periodic Metamaterials. (arXiv:2204.04000v5 [cond-mat.soft] UPDATED)**

Chaviva Sirote-Katz, Dor Shohat, Carl Merrigan, Yoav Lahini, Cristiano Nisoli, Yair Shokef

**A Tale of Two Quantum Compass Models. (arXiv:2206.15199v4 [cond-mat.str-el] UPDATED)**

Soumya Sur, M. S. Laad, Arya Subramonian, S. R. Hassan

**Topological Monomodes in non-Hermitian Systems. (arXiv:2304.05748v2 [cond-mat.mes-hall] UPDATED)**

E. Slootman, W. Cherifi, L. Eek, R. Arouca, E. J. Bergholtz, M. Bourennane, C. Morais Smith

**Symmetry Fractionalized (Irrationalized) Fusion Rules and Two Domain-Wall Verlinde Formulae. (arXiv:2304.08475v2 [cond-mat.str-el] UPDATED)**

Yu Zhao, Hongyu Wang, Yuting Hu, Yidun Wan

**Topologically-constrained fluctuations and thermodynamics regulate nonequilibrium response. (arXiv:2305.19348v3 [cond-mat.stat-mech] UPDATED)**

Gabriela Fernandes Martins, Jordan M. Horowitz

**On the detection of collective modes in unconventional superconductors using tunneling spectroscopy. (arXiv:2306.00072v2 [cond-mat.supr-con] UPDATED)**

Patrick A. Lee, Jacob F. Steiner

**Nonlinear dynamics of skyrmion strings. (arXiv:2306.11866v2 [nlin.PS] UPDATED)**

Volodymyr P. Kravchuk

**Lifshitz transitions and angular conductivity diagrams in metals with complex Fermi surfaces. (arXiv:2306.12225v2 [cond-mat.mtrl-sci] UPDATED)**

A. Ya. Maltsev

Found 8 papers in prb Giant anomalous Hall effect (AHE) and magneto-optical activity can emerge in magnets with topologically nontrivial degeneracies. However, identifying the specific band-structure features such as Weyl points, nodal lines, or planes which generate the anomalous response is a challenging issue. Since t… The inclusion of long-range couplings in the Kitaev chain is shown to modify the universal scaling of topological states close to the critical point. By means of the scattering approach, we prove that the Majorana states 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. Surpris… Exotic properties emerge from the electronic structure of few-layer transition-metal dichalcogenides (TMDs), such as direct band gaps in monolayers and moiré excitons in twisted bilayers, which are exploited in modern optoelectronic devices and twistronics. Here, Compton scattering in a transmission… We introduce trilayer and multilayer moiré heterostructures that cannot be viewed from the “moiré-of-moiré” perspective of helically twisted trilayer graphene. These “intrinsically trilayer” moiré systems feature periodic modulation of a local quasicrystalline structure. They open the door to realiz… Phonon polariton modes in layered anisotropic heterostructures are a key building block for modern nanophotonic technologies. The light-matter interaction for evanescent excitation of such a multilayer system can be theoretically described by a transfer-matrix formalism. This method allows us to com… Topological materials provide an interesting platform in the study of thermoelectric effect due to their novel electronic properties. Here we report the magneto-Seebeck (MS) effect, large Nernst effect, and a possible temperature-induced Lifshitz transition in topological semimetal ${\mathrm{YbMnSb}… We theoretically study the energy and optical absorption spectra of alternating-twist multilayer graphene (ATMG) under a perpendicular electric field. We obtain analytically the low-energy effective Hamiltonian of ATMG up to pentalayer in the presence of the interlayer bias by means of first-order d…

Date of feed: Wed, 28 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]+) **Nodal-line resonance generating the giant anomalous Hall effect of ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$**

F. Schilberth, M.-C. Jiang, S. Minami, M. A. Kassem, F. Mayr, T. Koretsune, Y. Tabata, T. Waki, H. Nakamura, G.-Y. Guo, R. Arita, I. Kézsmárki, and S. Bordács

Author(s): F. Schilberth, M.-C. Jiang, S. Minami, M. A. Kassem, F. Mayr, T. Koretsune, Y. Tabata, T. Waki, H. Nakamura, G.-Y. Guo, R. Arita, I. Kézsmárki, and S. Bordács

[Phys. Rev. B 107, 214441] Published Tue Jun 27, 2023

**Softening of Majorana edge states by long-range couplings**

Alessandro Tarantola and Nicolò Defenu

Author(s): Alessandro Tarantola and Nicolò Defenu*soften*, becoming increasingly delocalized at a universal rate which is only det…

[Phys. Rev. B 107, 235146] Published Tue Jun 27, 2023

**Boosting the surface conduction in a topological insulator**

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

Author(s): M. Taupin, G. Eguchi, M. Lužnik, A. Steiger-Thirsfeld, Y. Ishida, K. Kuroda, S. Shin, A. Kimura, and S. Paschen

[Phys. Rev. B 107, 235306] Published Tue Jun 27, 2023

**Twist-induced interlayer charge buildup in a $\mathrm{W}{\mathrm{S}}_{2}$ bilayer revealed by electron Compton scattering and density functional theory**

A. Talmantaite, Y. Xie, A. Cohen, P. K. Mohapatra, A. Ismach, T. Mizoguchi, S. J. Clark, and B. G. Mendis

Author(s): A. Talmantaite, Y. Xie, A. Cohen, P. K. Mohapatra, A. Ismach, T. Mizoguchi, S. J. Clark, and B. G. Mendis

[Phys. Rev. B 107, 235424] Published Tue Jun 27, 2023

**Intrinsically multilayer moiré heterostructures**

Aaron Dunbrack and Jennifer Cano

Author(s): Aaron Dunbrack and Jennifer Cano

[Phys. Rev. B 107, 235425] Published Tue Jun 27, 2023

**Layer-resolved resonance intensity of evanescent polariton modes in anisotropic multilayers**

Nikolai Christian Passler, Xiang Ni, Giulia Carini, Dmitry N. Chigrin, Andrea Alù, and Alexander Paarmann

Author(s): Nikolai Christian Passler, Xiang Ni, Giulia Carini, Dmitry N. Chigrin, Andrea Alù, and Alexander Paarmann

[Phys. Rev. B 107, 235426] Published Tue Jun 27, 2023

**Large Nernst effect and possible temperature-induced Lifshitz transition in topological semimetal ${\mathrm{YbMnSb}}_{2}$**

Sheng Xu, Chenxi Jiang, Shu-Xiang Li, Jun-Jian Mi, Zheng Li, Tian-Long Xia, Qian Tao, and Zhu-An Xu

Author(s): Sheng Xu, Chenxi Jiang, Shu-Xiang Li, Jun-Jian Mi, Zheng Li, Tian-Long Xia, Qian Tao, and Zhu-An Xu

[Phys. Rev. B 107, 245138] Published Tue Jun 27, 2023

**Electronic structure of biased alternating-twist multilayer graphene**

Kyungjin Shin, Yunsu Jang, Jiseon Shin, Jeil Jung, and Hongki Min

Author(s): Kyungjin Shin, Yunsu Jang, Jiseon Shin, Jeil Jung, and Hongki Min

[Phys. Rev. B 107, 245139] Published Tue Jun 27, 2023

Found 1 papers in pr_res The efficiency of particle acceleration at shock waves in relativistic, magnetized astrophysical outflows is a debated topic with far-reaching implications. Here, we study the impact of well-developed turbulence in the pre-shock plasma. Our simulations demonstrate that, for a mildly relativistic mag…

Date of feed: Wed, 28 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]+) **Particle acceleration at magnetized, relativistic, turbulent shock fronts**

Virginia Bresci, Martin Lemoine, and Laurent Gremillet

Author(s): Virginia Bresci, Martin Lemoine, and Laurent Gremillet

[Phys. Rev. Research 5, 023194] Published Tue Jun 27, 2023

Found 2 papers in nano-lett

Date of feed: Tue, 27 Jun 2023 21:05:31 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] Atomic-Scale Mechanisms of MoS _{2} Oxidation for Kinetic Control of MoS_{2}/MoO_{3} Interfaces**

Kate Reidy, Wouter Mortelmans, Seong Soon Jo, Aubrey N. Penn, Alexandre C. Foucher, Zhenjing Liu, Tao Cai, Baoming Wang, Frances M. Ross, and R. Jaramillo

Nano Letters

DOI: 10.1021/acs.nanolett.3c00303

Kyoung-Min Kim, Do Hoon Kiem, Grigory Bednik, Myung Joon Han, and Moon Jip Park Nano Letters DOI: 10.1021/acs.nanolett.3c01529 |

Found 2 papers in acs-nano

Date of feed: Tue, 27 Jun 2023 20:47:10 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] Role of Bilayer Graphene Microstructure on the Nucleation of WSe _{2} Overlayers**

Saiphaneendra Bachu, Malgorzata Kowalik, Benjamin Huet, Nadire Nayir, Swarit Dwivedi, Danielle Reifsnyder Hickey, Chenhao Qian, David W. Snyder, Slava V. Rotkin, Joan M. Redwing, Adri C. T. van Duin, and Nasim Alem

ACS Nano

DOI: 10.1021/acsnano.2c12621

Mahsa Jalali, Carolina del Real Mata, Laura Montermini, Olivia Jeanne, Imman I.Hosseini, Zonglin Gu, Cristiana Spinelli, Yao Lu, Nadim Tawil, Marie Christine Guiot, Zhi He, Sebastian Wachsmann-Hogiu, Ruhong Zhou, Kevin Petrecca, Walter W. Reisner, Janusz Rak, and Sara Mahshid⊗ ACS Nano DOI: 10.1021/acsnano.2c09222 |

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]+) **Interspecies exciton interactions lead to enhanced nonlinearity of dipolar excitons and polaritons in MoS2 homobilayers**

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