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Quantum Hall States in Graphene from Strain-Induced Nonuniform Magnetic
Fields: We examine strain-induced quantized Landau levels in graphene. Specifically,
arc-bend strains are found to cause nonuniform pseudomagnetic fields. Using an
effective Dirac model which describes the low-energy physics around the nodal
poin... | cond-mat_mes-hall |
Euler equation of the optimal trajectory for the fastest magnetization
reversal of nano-magnetic structures: Based on the modified Landau-Lifshitz-Gilbert equation for an arbitrary
Stoner particle under an external magnetic field and a spin-polarized electric
current, differential equations for the optimal reversal t... | cond-mat_mes-hall |
All Spin Logic device with inbuilt Non-Reciprocity: The need for low power alternatives to digital electronic circuits has led to
increasing interest in logic devices where information is stored in
nanomagnets. This includes both nanomagnetic logic (NML) where information is
communicated through magnetic fields of nano... | cond-mat_mes-hall |
Dynamic screening of quasiparticles in WS$_2$ monolayers: We unravel the influence of quasiparticle screening in the non-equilibrium
exciton dynamics of monolayer WS$_2$. We report pump photon energy-dependent
exciton blue and red-shifts from time-resolved-reflectance contrast
measurements. Based on a phenomenological ... | cond-mat_mes-hall |
Spaser as Nanoscale Quantum Generator and Ultrafast Amplifier: Nanoplasmonics has recently experienced explosive development with many novel
ideas and dramatic achievements in both fundamentals and applications. The
spaser has been predicted and observed experimentally as an active element --
generator of coherent loca... | cond-mat_mes-hall |
Circulating persistent current and induced magnetic field in a fractal
network: We present the overall conductance as well as the circulating currents in
individual loops of a Sierpinski gasket (SPG) as we apply bias voltage via the
side attached electrodes. SPG being a self-similar structure, its manifestation
on lo... | cond-mat_mes-hall |
Ellipsometry studies of Si/Ge superlattices with embedded Ge dots: In this paper, we present an analysis for treating the spectroscopic
ellipsometry response of Si/Ge superlattices (SL) with embedded Ge dots.
Spectroscopic ellipsometry (SE) measurement at room temperature was used to
investigate optical and electronic ... | cond-mat_mes-hall |
Conductance of a quantum point contact based on spin-density-functional
theory: We present full quantum mechanical conductance calculations of a quantum
point contact (QPC) performed in the framework of the density functional theory
(DFT) in the local spin-density approximation (LDA). We show that a
spin-degeneracy o... | cond-mat_mes-hall |
Order from Disorder in Graphene Quantum Hall Ferromagnet: Valley-polarized quantum Hall states in graphene are described by a
Heisenberg O(3) ferromagnet model, with the ordering type controlled by the
strength and sign of valley anisotropy. A mechanism resulting from electron
coupling to strain-induced gauge field, gi... | cond-mat_mes-hall |
Intrinsic Spin Swapping: Here, we study diffusive spin transport in two dimensions and demonstrate
that an intrinsic analog to a previously predicted extrinsic spin swapping
effect, where the spin polarization and the direction of flow are interchanged
due to spin-orbit coupling at extrinsic impurities, can be induced ... | cond-mat_mes-hall |
Local density of states in disordered graphene: We study two lattice models, the honeycomb lattice (HCL) and a special square
lattice (SQL), both reducing to the Dirac equation in the continuum limit. In
the presence of disorder (gaussian potential disorder and random vector
potential), we investigate the behaviour of ... | cond-mat_mes-hall |
Quantum interference and contact effects in dangling bond loops on
H-Si(100) surfaces: We perform electronic structure and quantum transport studies of dangling
bond loops created on H-passivated Si(100) surfaces and connected to carbon
nanoribbon leads. We model loops with straight and zigzag topologies as well as
w... | cond-mat_mes-hall |
Phase biasing of a Josephson junction using Rashba-Edelstein effect: Manifestation of orbital coupling of spin degree of freedom in condensed
matter systems has opened up a new dimension for the field of spintronics. The
most appealing aspect of the spin-orbit coupling is the apparent Magnus force
sensed by a spin syst... | cond-mat_mes-hall |
Bulk-edge correspondence of Stiefel-Whitney and Euler insulators through
the entanglement spectrum and cutting procedure: We propose an unconventional bulk-edge correspondence for two-dimensional
Stiefel-Whitney insulators and Euler insulators, which are topological
insulators protected by the $PT$ symmetry. We find ... | cond-mat_mes-hall |
Origin of the hysteresis in bilayer 2D systems in the quantum Hall
regime: The hysteresis observed in the magnetoresistance of bilayer 2D systems in the
quantum Hall regime is generally attributed to the long time constant for
charge transfer between the 2D systems due to the very low conductivity of the
quantum Hall... | cond-mat_mes-hall |
Observation of Hysteretic Transport Due to Dynamic Nuclear Spin
Polarization in a GaAs Lateral Double Quantum Dot: We report a new transport feature in a GaAs lateral double quantum dot that
emerges only for magnetic field sweeps and shows hysteresis due to dynamic
nuclear spin polarization (DNP). This DNP signal app... | cond-mat_mes-hall |
Entangling electrons by splitting Cooper pairs: Two-particle conductance
resonance and time coincidence measurements: Entanglement, being at the heart of the Einstein-Podolsky-Rosen (EPR)
paradox, is a necessary ingredient in processing quantum information. Cooper
pairs in superconductors - being composites of two fu... | cond-mat_mes-hall |
Anyonic order parameters for discrete gauge theories on the lattice: We present a new family of gauge invariant non-local order parameters for
(non-abelian) discrete gauge theories on a Euclidean lattice, which are in
one-to-one correspondence with the excitation spectrum that follows from the
representation theory of ... | cond-mat_mes-hall |
Strain engineering the charged-impurity-limited carrier mobility in
phosphorene: We investigate, based on the tight-binding model and in the linear
deformation regime, the strain dependence of the electronic band structure of
phosphorene, exposed to a uniaxial strain in one of its principle directions,
the normal, th... | cond-mat_mes-hall |
Broadband terahertz probes of anisotropic magnetoresistance disentangle
extrinsic and intrinsic contributions: Anisotropic magnetoresistance (AMR) is a ubiquitous and versatile probe of
magnetic order in contemporary spintronics research. Its origins are usually
ascribed to extrinsic effects (i.e. spin-dependent elec... | cond-mat_mes-hall |
Validity of the Lowest Landau Level Approximation for Rotating Bose
Gases: The energy spectrum for an ultracold rotating Bose gas in a harmonic trap is
calculated exactly for small systems, allowing the atoms to occupy several
Landau levels. Two vortex-like states and two strongly correlated states (the
Pfaffian and ... | cond-mat_mes-hall |
Frequency-Dependent Current Noise through Quantum-Dot Spin Valves: We study frequency-dependent current noise through a single-level quantum dot
connected to ferromagnetic leads with non-collinear magnetization. We propose
to use the frequency-dependent Fano factor as a tool to detect single-spin
dynamics in the quantu... | cond-mat_mes-hall |
The two dimensional local density of states of a Topological Insulator
with an edge dislocation: We investigate the effect of a crystal edge dislocation on the metallic
surface of a Topological Insulator. The edge dislocation gives rise to torsion
which the electrons experience as a spin connection. As a result the e... | cond-mat_mes-hall |
Temperature dependence of spin polarization in ferromagnetic metals
using lateral spin valves: A high reproducibility in the performance of cobalt/copper and
permalloy/copper lateral spin valves with transparent contacts is obtained by
optimizing the interface quality and the purity of copper. This allows us to
study... | cond-mat_mes-hall |
Exact solution for the dynamical decoupling of a qubit with telegraph
noise: We study the dissipative dynamics of a qubit that is afflicted by classical
random telegraph noise and it is subject to dynamical decoupling. We derive
exact formulas for the qubit dynamics at arbitrary working points in the limit
of infinit... | cond-mat_mes-hall |
The transmission spectra of the graphene-based Fibonacci superlattice: We consider the gapped graphene superlattice (SL) constructed in accordance
with the Fibonacci rule. Quasi-periodic modulation is due to the difference in
the values of the energy gap in different SL elements. It is shown that the
effective splittin... | cond-mat_mes-hall |
Chaos in two-dimensional Kepler problem with spin-orbit coupling: We consider classical two-dimensional Kepler system with spin-orbit coupling
and show that at a sufficiently strong coupling it demonstrates a chaotic
behavior. The chaos emerges since the spin-orbit coupling reduces the number of
the integrals of motion... | cond-mat_mes-hall |
Entanglement spectrum and symmetries in non-Hermitian fermionic
non-interacting models: We study the properties of the entanglement spectrum in gapped
non-interacting non-Hermitian systems, and its relation to the topological
properties of the system Hamiltonian. Two different families of entanglement
Hamiltonians ca... | cond-mat_mes-hall |
Conductance Fluctuations and Domain Depinning in Quasi-2D
Charge-Density-Wave 1T-TaS$_2$ Thin Films: We investigated the temperature dependence of the conductance fluctuations in
thin films of the quasi-two-dimensional 1T-TaS$_2$ van der Waals material. The
conductance fluctuations, determined from the derivative cur... | cond-mat_mes-hall |
Formulation of Time-Resolved Counting Statistics Based on a
Positive-Operator-Valued Measure: We propose a derivation of the full counting statistics of electronic current
based on a positive-operator-valued measure. Our approach justifies the
Levitov-Lesovik formula in the long-time limit, but can be generalized to ... | cond-mat_mes-hall |
Calculating interface transport parameters at finite temperatures:
Nonmagnetic interfaces: First-principles scattering calculations are used to investigate spin
transport through interfaces between diffusive nonmagnetic metals where the
symmetry lowering leads to an enhancement of the effect of spin-orbit coupling
(S... | cond-mat_mes-hall |
2D transport and screening in topological insulator surface states: We study disorder effects on the surface states of the topological insulator
Bi$_2$Se$_3$ close to the topologically protected crossing point. Close to
charge neutrality, local fluctuations in carrier density arising from the
random charged disorder in... | cond-mat_mes-hall |
Floquet band structure of a semi-Dirac system: In this work we use Floquet-Bloch theory to study the influence of circularly
and linearly polarized light on two-dimensional band structures with semi-Dirac
band touching points, taking the anisotropic nearest neighbor hopping model on
the honeycomb lattice as an example.... | cond-mat_mes-hall |
Intermediate phase and pseudo phase transition in an artificial spin ice
model: In this paper we conduct Monte Carlo simulations to investigate the
thermodynamic properties of a geometry of artificial spin ice recently proposed
in the literature that had been termed "rewritable" spin ice, for its
experimental realiza... | cond-mat_mes-hall |
Majorana qubit decoherence by quasiparticle poisoning: We consider the problem of quasiparticle poisoning in a nanowire-based
realization of a Majorana qubit, where a spin-orbit-coupled semiconducting wire
is placed on top of a (bulk) superconductor. By making use of recent
experimental data exhibiting evidence of a lo... | cond-mat_mes-hall |
Diffusion and multifractality at the metal-insulator transition: We review the time evolution of wavepackets at the metal-insulator transition
in two- and three-dimensional disordered systems. The importance of scale
invariance and multifractal eigenfunction fluctuations is stressed. The
implications of the frequency- ... | cond-mat_mes-hall |
Non-Markovian transients in transport across chiral quantum wires using
space-time non-equilibrium Green functions: We study a system of two non-interacting quantum wires with fermions of
opposite chirality with a point contact junction at the origin across which
tunneling can take place when an arbitrary time-depend... | cond-mat_mes-hall |
Measuring electron energy distribution by current fluctuations: A recent concept of local noise sensor is extended to measure the energy
resolved electronic energy distribution $f(\varepsilon)$ at a given location
inside a non-equilibrium normal metal interconnect. A quantitative analysis of
$f(\varepsilon)$ is complic... | cond-mat_mes-hall |
Anomalous thermoelectric properties of a Floquet topological insulator
with spin momentum non-orthogonality: The spin momentum non-orthogonality in 3D topological insulators leads to
modification of the spin texture and brings in an out-of-plane spin
polarization component. Apart from spin texture, the anomalous ther... | cond-mat_mes-hall |
Nano-beam clamping revisited: Within recent years, the field of nano-mechanics has diversified in a variety
of applications, ranging from quantum information processing to biological
molecules recognition. Among the diversity of devices produced these days, the
simplest (but versatile) element remains the doubly-clampe... | cond-mat_mes-hall |
Spectral statistics of disordered metals in the presence of several
Aharonov-Bohm fluxes: The form factor for spectral correlations in a diffusive metal is calculated
in the presence of several Aharonov-Bohm fluxes. When the fluxes $\phi$ are
equal, the correlations are universal functions of $n g^2 \phi$ where $g$ i... | cond-mat_mes-hall |
Magnetopumping current in graphene Corbino pump: We study conductance and adiabatic pumped charge and spin currents in a
graphene quantum pump with Corbino geometry in the presence of an applied
perpendicular magnetic field. The pump is driven by the periodic and out of
phase modulations of the magnetic field and an el... | cond-mat_mes-hall |
Microscopic analysis of shot-noise suppression in nondegenerate
diffusive conductors: We present a theoretical investigation of shot-noise suppression due to
long-range Coulomb interaction in nondegenerate diffusive conductors.
Calculations make use of an ensemble Monte Carlo simulator self-consistently
coupled with ... | cond-mat_mes-hall |
Prediction of inelastic light scattering spectra from electronic
collective excitations in GaAs/AlGaAs core-multishell nanowires: We predict inelastic light scattering spectra from electron collective
excitations in a coaxial quantum well embedded in a core-multishell GaAs/AlGaAs
nanowire. The complex composition, th... | cond-mat_mes-hall |
55Mn NMR in Mn12 acetate: Hyperfine interaction and magnetic relaxation
of cluster: The 55Mn NMR in oriented powder Mn12Ac has been investigated at 1.4-2.0 K in
zero field and with external fields along the c-axis. Three kinds of 55Mn NMR
composed of five-fold quadrupole-split lines for I=5/2 nuclei have been
interpr... | cond-mat_mes-hall |
Topological superconductivity in lead nanowires: Superconductors with an odd number of bands crossing the Fermi energy have
topologically protected Andreev states at interfaces, including Majorana states
in one dimensional geometries. Superconductivity, a low number of 1D channels,
large spin orbit coupling, and a size... | cond-mat_mes-hall |
Tunneling through two resonant levels: fixed points and conductances: We study point contact tunneling between two leads of a Tomonaga-Luttinger
liquid through two degenerate resonant levels in parallel. This is one of the
simplest cases of a quantum junction problem where the Fermi statistics of the
electrons plays a ... | cond-mat_mes-hall |
Thermal fluctuation field for current-induced domain wall motion: Current-induced domain wall motion in magnetic nanowires is affected by
thermal fluctuation. In order to account for this effect, the
Landau-Lifshitz-Gilbert equation includes a thermal fluctuation field and
literature often utilizes the fluctuation-diss... | cond-mat_mes-hall |
A scalar photon theory for near-field radiative heat transfer: We study a one-dimensional model of radiative heat transfer for which the
effect of the electromag- netic field is only from the scalar potential and
thereby ignoring the vector potential contribution. This is a valid assumption
when the distances between o... | cond-mat_mes-hall |
Quantum non-demolition measurements of a qubit coupled to a harmonic
oscillator: We theoretically describe the weak measurement of a two-level system (qubit)
and quantify the degree to which such a qubit measurement has a quantum
non-demolition (QND) character. The qubit is coupled to a harmonic oscillator
which unde... | cond-mat_mes-hall |
Extended Hubbard model for mesoscopic transport in donor arrays in
silicon: Arrays of dopants in silicon are promising platforms for the quantum
simulation of the Fermi-Hubbard model. We show that the simplest model with
only on-site interaction is insufficient to describe the physics of an array of
phosphorous donor... | cond-mat_mes-hall |
Nonreciprocal Emergence of Hybridized Magnons in magnetic thin Films: We investigate the transfer and control of nonreciprocity through magnons
themselves in permalloy thin films deposited on surface oxide silicon
substrate. Evidences of nonreciprocal emergence of hybridized dipole exchange
magnons (spin waves) at two ... | cond-mat_mes-hall |
Spaser Spectroscopy with Subwavelength Spatial Resolution: A new method for high-sensitivity subwavelength spectromicroscopy is proposed
based on the usage of a spaser (near-field laser) in the form of a scanning
probe microscope tip. The high spatial resolution is defined by the tip's
curvature, as is the case for ape... | cond-mat_mes-hall |
Controlled Growth of a Line Defect in Graphene and Implications for
Gate-Tunable Valley Filtering: Atomically precise tailoring of graphene can enable unusual transport
pathways and new nanometer-scale functional devices. Here we describe a recipe
for the controlled production of highly regular "5-5-8" line defects i... | cond-mat_mes-hall |
Topological phase transitions in the non-Abelian honeycomb lattice: Ultracold Fermi gases trapped in honeycomb optical lattices provide an
intriguing scenario, where relativistic quantum electrodynamics can be tested.
Here, we generalize this system to non-Abelian quantum electrodynamics, where
massless Dirac fermions ... | cond-mat_mes-hall |
Carbon Nanotubes as Nanoelectromechanical Systems: We theoretically study the interplay between electrical and mechanical
properties of suspended, doubly clamped carbon nanotubes in which charging
effects dominate. In this geometry, the capacitance between the nanotube and
the gate(s) depends on the distance between th... | cond-mat_mes-hall |
Macroscopic resonant tunneling of magnetic flux: We have developed a quantitative theory of resonant tunneling of magnetic
flux between discrete macroscopically distinct quantum states in SQUID systems.
The theory is based on the standard density-matrix approach. Its new elements
include the discussion of the two diffe... | cond-mat_mes-hall |
Polariton transport in one-dimensional channels: We study theoretically the transport of linearly polarized exciton-polaritons
in a quasi one-dimensional microcavity channel separating two polariton
condensates generated by optical pumping. The direction and value of mass and
spin currents are controlled by the relativ... | cond-mat_mes-hall |
Graphene plasmons and retardation: strong light-matter coupling: We study the retardation regime of doped graphene plasmons, given by the
nominal crossing of the unretarded plasmon and light-cone. In addition to
modifications in the plasmon dispersion relation, retardation implies strong
coupling between propagating li... | cond-mat_mes-hall |
Landau levels, self-adjoint extensions and Hall conductivity on a cone: In this work we obtain the Landau levels and the Hall conductivity at zero
temperature of a two-dimensional electron gas on a conical surface. We
investigate the integer quantum Hall effect considering two different
approaches. The first one is an ... | cond-mat_mes-hall |
Engineering Quantum Anomalous Hall Plateaus and Anti-Chiral States with
AC Fields: We investigate the AC electric field induced quantum anomalous Hall effect in
honeycomb lattices and derive the full phase diagram for arbitrary field
amplitude and phase polarization. We show how to induce anti-chiral edge modes
as we... | cond-mat_mes-hall |
Walker-like Domain Wall breakdown in layered Antiferromagnets driven by
staggered spin-orbit fields: Within linear continuum theory, no magnetic texture can propagate faster than
the maximum group velocity of its spin waves. Here we report a transient regime
due to the appearance of additional antiferromagnetic textu... | cond-mat_mes-hall |
Dynamical Shiba states by precessing magnetic moments in an s-wave
superconductor: We study theoretically the dynamics of a Shiba state forming around
precessing classical spin in an s-wave superconductor. Utilizing a rotating
wave description for the precessing magnetic impurity, we find the resulting
Shiba bound st... | cond-mat_mes-hall |
Nonlinear coherent transport of waves in disordered media: We present a diagrammatic theory for coherent backscattering from disordered
dilute media in the nonlinear regime. The approach is non-perturbative in the
strength of the nonlinearity. We show that the coherent backscattering
enhancement factor is strongly affe... | cond-mat_mes-hall |
Impurity-directed Transport within a Finite Disordered Lattice: We consider a finite, disordered 1D quantum lattice with a side-attached
impurity. We study theoretically the transport of a single electron from the
impurity into the lattice, at zero temperature. The transport is dominated by
Anderson localization and, i... | cond-mat_mes-hall |
Spacer-layer-tunable magnetism and high-field topological Hall effect in
topological insulator heterostructures: Controlling magnetic order in magnetic topological insulators (MTIs) is a key
to developing spintronic applications with MTIs, and is commonly achieved by
changing the magnetic doping concentration, which ... | cond-mat_mes-hall |
Anomalous Finite Size Effects on Surface States in the Topological
Insulator Bi$_2$Se$_3$: We study how the surface states in the strong topological insulator
Bi$_2$Se$_3$ are influenced by finite size effects, and compare our results
with those recently obtained for 2D topological insulator HgTe. We demonstrate
two ... | cond-mat_mes-hall |
Phonon Driven Nonlinear Electrical Behavior in Molecular Devices: Electronic transport in a model molecular device coupled to local phonon
modes is theoretically analyzed. The method allows for obtaining an accurate
approximation of the system's quantum state irrespective of the electron and
phonon energy scales. Nonli... | cond-mat_mes-hall |
High-Chern number phase in the topological insulator multilayer
structures: The high-Chern number phases with a Chern number C>1 have been observed in a
recent experiment that performed on the topological insulator (TI) multilayer
structures, consisting of the alternating magnetic-doped and undoped TI layers.
In this... | cond-mat_mes-hall |
Correlated breakdown of carbon nanotubes in an ultra-high density
aligned array: We demonstrate that in a densely packed aligned array of single walled carbon
nanotubes, the breakdown of one nanotube leads to a highly correlated breakdown
of neighboring nanotubes, thereby producing a nano-fissure. We show that the
or... | cond-mat_mes-hall |
Quantum anomalous Hall effect in atomic crystal layers from in-plane
magnetization: We theoretically report that, with \textit{in-plane} magnetization, the
quantum anomalous Hall effect (QAHE) can be realized in two-dimensional atomic
crystal layers with preserved inversion symmetry but broken out-of-plane mirror
ref... | cond-mat_mes-hall |
Time-Delay Polaritonics: Non-linearity and finite signal propagation speeds are omnipresent in nature,
technologies, and real-world problems, where efficient ways of describing and
predicting the effects of these elements are in high demand. Advances in
engineering condensed matter systems, such as lattices of trapped ... | cond-mat_mes-hall |
Phase transitions on the surface of a carbon nanotube: A suspended carbon nanotube can act as a nanoscale resonator with remarkable
electromechanical properties and the ability to detect adsorption on its
surface at the level of single atoms. Understanding adsorption on nanotubes and
other graphitic materials is key to... | cond-mat_mes-hall |
A spin dynamics approach to solitonics: It is spatial dispersion which is exclusively responsible for the emergence
of exchange interaction and magnetic ordering. In contrast, magneto-crystalline
anisotropy present in any realistic material brings in a certain non-linearity
to the equation of motion. Unlike homogeneous... | cond-mat_mes-hall |
Electronic Bloch oscillation in bilayer graphene gradient superlattices: We investigate the electronic Bloch oscillation in bilayer graphene gradient
superlattices using transfer matrix method. By introducing two kinds of
gradient potentials of square barriers along electrons propagation direction,
we find that Bloch o... | cond-mat_mes-hall |
Microscopic Theory of Skyrmions in Quantum Hall Ferromagnets: We present a microscopic theory of skyrmions in the monolayer quantum Hall
ferromagnet. It is a peculiar feature of the system that the number density and
the spin density are entangled intrinsically as dictated by the W$%_{\infty}$
algebra. The skyrmion and... | cond-mat_mes-hall |
Dynamics and condensation of polaritons in an optical nanocavity coupled
to two-dimensional materials: We present a comprehensive investigation of the light-matter interaction
dynamics in two-dimensional materials coupled with a spectrally isolated cavity
mode in the strong coupling regime. The interaction between li... | cond-mat_mes-hall |
Hole-doping-induced half-metallic ferromagnetism in highly-air-stable
PdSe2 monolayer under uniaxial stress: Two-dimensional (2D) high-temperature ferromagnetic materials are important
for spintronic application. Fortunately, a highly-air-stable PdSe$_2$ monolayer
semiconductor has been made through exfoliation from ... | cond-mat_mes-hall |
Selective Conduction of Organic Molecules via Free-Standing Graphene: A race is held between ten species of organic gas molecules on a graphene
substrate driven by thermal gradients via molecular dynamics. Fast conduction
of the molecules is observed with selectivity for aromatic compounds. This
selectivity stems from ... | cond-mat_mes-hall |
Tunable Sample-wide Electronic Kagome Lattice in Low-angle Twisted
Bilayer Graphene: Overlaying two graphene layers with a small twist angle can create a moire
superlattice to realize exotic phenomena that are entirely absent in graphene
monolayer. A representative example is the predicted formation of localized
pseu... | cond-mat_mes-hall |
Vacuum Thermal Switch Made of Phase Transition Materials Considering
Thin Film and Substrate Effects: In the present study, we demonstrate a vacuum thermal switch based on
near-field thermal radiation between phase transition materials, i.e., vanadium
dioxide (VO2), whose phase changes from insulator to metal at 341 ... | cond-mat_mes-hall |
Electronic bandstructure and van der Waals coupling of ReSe2 revealed by
high-resolution angle-resolved photoemission spectroscopy: ReSe2 and ReS2 are unusual compounds amongst the layered transition metal
dichalcogenides as a result of their low symmetry, with a characteristic
in-plane anisotropy due to in-plane rhe... | cond-mat_mes-hall |
Fabry-Perot interferometry at the $ν$ = 2/5 fractional quantum Hall
state: Electronic Fabry-P{\'e}rot interferometry is a powerful method to probe
quasiparticle charge and anyonic braiding statistics in the fractional quantum
Hall regime. We extend this technique to the hierarchy $\nu = 2/5$ fractional
quantum Hall s... | cond-mat_mes-hall |
Disorder-driven exceptional lines and Fermi ribbons in tilted nodal-line
semimetals: We consider the impact of disorder on the spectrum of three-dimensional
nodal-line semimetals. We show that the combination of disorder and a tilted
spectrum naturally leads to a non-Hermitian self-energy contribution that can
split ... | cond-mat_mes-hall |
Transport in a Dissipative Luttinger Liquid: We study theoretically the transport through a single impurity in a
one-channel Luttinger liquid coupled to a dissipative (ohmic) bath . For
non-zero dissipation $\eta$ the weak link is always a relevant perturbation
which suppresses transport strongly. At zero temperature t... | cond-mat_mes-hall |
Quantum size phenomena in single-crystalline bismuth nanostructures: Size-dependent quantization of energy spectrum of conducting electrons in
solids leads to oscillating dependence of electronic properties on
corresponding dimension(s). In conventional metals with typical energy Fermi
EF~1 eV and the charge carrier's ... | cond-mat_mes-hall |
The influence of a strong infrared radiation field on the conductance
properties of doped semiconductors: This work presents an analytic angular differential cross section formula for
the electromagnetic radiation field assisted electron scattering by %% was on
impurities in semiconductors. These impurities are appro... | cond-mat_mes-hall |
Spin current generation and control in carbon nanotubes by combining
rotation and magnetic field: We study the quantum dynamics of ballistic electrons in rotating carbon
nanotubes in the presence of a uniform magnetic field. When the field is
parallel to the nanotube axis, the rotation-induced electric field brings a... | cond-mat_mes-hall |
Atomistic Simulation of Phonon and Magnon Thermal Transport across the
Ferro-Paramagnetic Transition: A temperature-dependent approach involving Green-Kubo equilibrium atomic and
spin dynamics (GKEASD) is reported to assess phonon and magnon thermal
transport processes accounting for phonon-magnon interactions. Using... | cond-mat_mes-hall |
Theoretical methods for excitonic physics in two-dimensional materials: In this tutorial we introduce the reader to several theoretical methods of
determining the exciton wave functions and the corresponding eigenenergies. The
methods covered are either analytical, semi-analytical, or numeric. We make
explicit all the ... | cond-mat_mes-hall |
Superlattice of resonators on monolayer graphene created by intercalated
gold nanoclusters: Here we report on a "new" type of ordering which allows to modify the
electronic structure of a graphene monolayer (ML). We have intercalated small
gold clusters between the top monolayer graphene and the buffer layer of
epita... | cond-mat_mes-hall |
QED with magnetic textures: Coherent exchange between photons and different matter excitations (like
qubits, acoustic surface waves or spins) allows for the entanglement of light
and matter and provides a toolbox for performing fundamental quantum physics.
On top of that, coherent exchange is a basic ingredient in the ... | cond-mat_mes-hall |
Self-consistent multi-mode lasing theory for complex or random lasing
media: A semiclassical theory of single and multi-mode lasing is derived for open
complex or random media using a self-consistent linear response formulation.
Unlike standard approaches which use closed cavity solutions to describe the
lasing modes... | cond-mat_mes-hall |
Transport measurements on van der Waals heterostructures under pressure: The interlayer coupling, which has a strong influence on the properties of
van der Waals heterostructures, strongly depends on the interlayer distance.
Although considerable theoretical interest has been demonstrated, experiments
exploiting a vari... | cond-mat_mes-hall |
$\mathcal{PT}$-symmetric non-Hermitian Dirac semimetals: Parity-time ($\mathcal{PT}$) symmetry plays an important role both in
non-Hermitian and topological systems. In non-Hermitian systems $\mathcal{PT}$
symmetry can lead to an entirely real energy spectrum, while in topological
systems $\mathcal{PT}$ symmetry gives ... | cond-mat_mes-hall |
Inelastic Cotunneling Resonances in the Coulomb-Blockade Transport in
Donor-Atom Transistors: We report finite-bias characteristics of electrical transport through
phosphorus donors in silicon nanoscale transistors, in which we observe
inelastic-cotunneling current in the Coulomb blockade region. The cotunneling
curr... | cond-mat_mes-hall |
Unconventional transformation of spin Dirac phase across a topological
quantum phase transition: The topology of a topological material can be encoded in its surface states.
These surface states can only be removed by a bulk topological quantum phase
transition into a trivial phase. Here we use photoemission spectros... | cond-mat_mes-hall |
Spin-polarized quantum transport through a T-shape quantum dot-array: a
model of spin splitter: We in this paper study theoretically the spin-polarized quantum transport
through a T-shape quantum dot-array by means of transfer-matrix method along
with the Green^{,}s function technique. Multi-magnetic fields are used ... | cond-mat_mes-hall |
Spontaneous spin polarization in quantum point contacts: We use spatial spin separation by a magnetic focusing technique to probe the
polarization of quantum point contacts. The point contacts are fabricated from
p-type GaAs/AlGaAs heterostructures. A finite polarization is measured in the
low-density regime, when the ... | cond-mat_mes-hall |
Effects of bonding type and interface geometry on coherent transport
through the single-molecule magnet Mn12: We examine theoretically coherent electron transport through the
single-molecule magnet Mn$_{12}$, bridged between Au(111) electrodes, using the
non-equilibrium Green's function method and the density-functio... | cond-mat_mes-hall |
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