Found 29 papers in cond-mat The most recent discovery, the Cu-doped lead apatite LK-99, is a proposed
room-temperature superconductor operating under ambient pressure. However, this
discovery has brought a slew of conflicting results from different scientific
groups. While some observed the absence of electrical resistance, others could
not confirm any signs of superconductivity in LK-99. Here, we investigate the
structural and electronic properties of LK-99 and its antecedent compounds
through quantum mechanics (QM) and QM-based molecular dynamics (QM-MD)
simulations. Our study elucidates the insulating nature of base compounds,
Pb$_{10}$(PO$_4$)$_6$O and Pb$_{10}$(PO$_4$)$_6$(OH)$_2$, spotlighting their
large band gaps. Notably, Cu doping in LK-99 disrupts its symmetry, yielding a
distorted ground-state crystal structure with a triclinic P1 symmetry and
CuO$_4$ square coordination. Such alterations predispose LK-99 to exhibit
semiconducting behaviors, characterized by a flat band above the Fermi energy,
arising from Cu-3d and O-2p orbitals. In addition, the S doping sustains the
triclinic P1 symmetry but leads to a significantly reduced band gap, with a
band emerging primarily from Cu-3d and S-3p orbitals. These findings are
important in understanding LK-99's structural and electronic properties and
provide a strategic compass for the development of high-T$_C$ superconductors.
As is well-known, two-dimensional and three-dimensional superfluids under
rotation can support topological excitations such as quantized point vortices
and line vortices respectively. Recently, we have studied how, in a
hypothetical four-dimensional (4D) superfluid, such excitations can be
generalised to vortex planes and surfaces. In this paper, we continue our
analysis of skewed and curved vortex surfaces based on the 4D Gross-Pitaevskii
equation, and show that certain types of such states can be stabilised by
equal-frequency double rotations for suitable parameters. This work extends the
rich phenomenology of vortex surfaces in 4D, and raises interesting questions
about vortex reconnections and the competition between various vortex
structures which have no direct analogue in lower dimensions.
Point defects in two-dimensional materials are of key interest for quantum
information science. However, the space of possible defects is immense, making
the identification of high-performance quantum defects extremely challenging.
Here, we perform high-throughput (HT) first-principles computational screening
to search for promising quantum defects within WS$_2$, which present localized
levels in the band gap that can lead to bright optical transitions in the
visible or telecom regime. Our computed database spans more than 700 charged
defects formed through substitution on the tungsten or sulfur site. We found
that sulfur substitutions enable the most promising quantum defects. We
computationally identify the neutral cobalt substitution to sulfur (Co$_{\rm
S}^{0}$) as very promising and fabricate it with scanning tunneling microscopy
(STM). The Co$_{\rm S}^{0}$ electronic structure measured by STM agrees with
first principles and showcases an attractive new quantum defect. Our work shows
how HT computational screening and novel defect synthesis routes can be
combined to design new quantum defects.
Quantum oscillations in magnetic torque and electrical resistivity were
measured to investigate the electronic structure of \b{eta}-ReO2, a candidate
hourglass nodal chain metal (Dirac loop chain metal). All the de Haas-van
Alphen oscillation branches measured at 30 mK in magnetic fields of up to 17.5
T were consistent with first-principles calculations predicting four Fermi
surfaces (FSs). The small-electron FS of the four FSs exhibited a very small
cyclotron mass, 0.059 times that of the free electrons, which is likely to be
related to the linear dispersion of the energy band. The consistency between
the quantum oscillation results and band calculations indicates the presence of
the hourglass nodal chain predicted for \b{eta}-ReO2 in the vicinity of the
Fermi energy.
Transfer techniques based on two dimensional (2D) materials and devices offer
immense potential towards their industrial integration with the existing
silicon based electronics. To achieve high quality devices, there is an urgent
requirement for the etching-free, and clean transfer that retain original
semiconducting properties of layered channel materials. In parallel, transfer
of metal electrode arrays on the 2D semiconductors also attract attention
towards large-scale integration for commercial applications. Here, we
demonstrate a facile PMMA-assisted etching-free one-step approach to transfer
both 2D channels and metal electrodes without damaging the contact region. The
direct device transfer (DDT) technique enables residue-free monolayer MoS2 as
channel material towards achieving doping-free intrinsic transistors with
enhanced performances. The crystalline quality, strain relaxation, and
interfacial coupling effects are studied using Raman and photoluminescence
spectra with spatial mapping. Post device transfer, a reduced pinning effect is
observed by the effective modulation of gate tunable drain currents in MoS2
transistors at room temperature. Furthermore, the extracted Schottky barrier
heights, temperature dependence of threshold voltage shifts, hysteresis
evolution, and mobility enhancements validates the improved transistor
performances in transferred devices. The proposed DDT method can be utilized to
directly transfer array of devices of 2D materials and heterostructures
skipping various cumbersome steps in between and hence could offer high
performance reliable electronic applications.
We investigate the magnetotransport of topological Dirac semimetals (DSMs) by
taking into account the Lifshitz transition of the Fermi arc surface states. We
demonstrate that a bulk momentum-dependent gap term, which is usually neglected
in study of the bulk energy-band topology, can cause the Lifshitz transition by
developing an additional Dirac cone for the surface to prevent the Fermi arcs
from connecting the bulk Dirac points. As a result, the Weyl orbits can be
turned off by the surface Dirac cone without destroying the bulk Dirac points.
In response to the surface Lifshitz transition, the Weyl-orbit mechanism for
the 3D quantum Hall effect (QHE) in topological DSMs will break down. The
resulting quantized Hall plateaus can be thickness-dependent, similar to the
Weyl-orbit mechanism, but their widths and quantized values become irregular.
Accordingly, we propose that apart from the bulk Weyl nodes and Fermi arcs, the
surface Lifshitz transition is also crucial for realizing stable Weyl orbits
and 3D QHE in real materials.
Using scanning tunnel microscopy (STM), we investigate the superconductivity
and vortex properties in topological insulator Bi$_{2}$Te$_{3}$ thin films
grown on the iron-based superconductor FeTe$_{0.55}$Se$_{0.45}$. The
proximity-induced superconductivity weakens in the Bi$_{2}$Te$_{3}$ film when
the thickness of the film increases. Unlike the elongated shape of vortex cores
observed in the Bi$_{2}$Te$_{3}$ film with 2-quintuple-layer (QL) thickness,
the isolated vortex cores exhibit a star shape with six rays in the 1-QL film,
and the rays are along the crystalline axes of the film. This is consistent
with the sixfold rotational symmetry of the film lattice, and the
proximity-induced superconductivity is still topologically trivial in the 1-QL
film. At a high magnetic field, when the direction between the two nearest
neighbored vortices deviates from that of any crystalline axes, two cores
connect each other by a pair of adjacent rays, forming a new type of electronic
structure of vortex cores. On the 3-QL film, the vortex cores elongate along
one of the crystalline axes of the Bi$_{2}$Te$_{3}$ film, similar to the
results obtained on 2-QL films. The elongated vortex cores indicate a twofold
symmetry of the superconducting gap induced by topological superconductivity
with odd parity. This observation confirms possible topological
superconductivity in heterostructures with a thickness of more than 2 QLs. Our
results provide rich information for the vortex cores and vortex-bound states
on the heterostructures consisting of the topological insulator and the
iron-based superconductor.
Graphene field-effect transistors exhibit negligible transconductance under
two scenarios: for any gate-to-source voltage when the drain-to-source voltage
is set to zero, and for an arbitrary drain-to-source voltage provided that the
gate-to-source voltage equals the Dirac voltage. Hence, extracting the channel
and the parasitic series resistances from S-parameters under these conditions
enables analyzing their dependence on the gate and drain biases. This is
fundamental to assess the portion of the output resistance that is controlled
by the gate. Besides, the drain bias dependence of the drain and source
resistances is also evidenced. Within the proposal, resistive components
accounting for the lossy nature of the gate capacitance are incorporated into
the model, which exhibits a broadband correlation with experimental data. This
avoids the series resistances to be considered as frequency dependent in the
model.
The advent of high-field THz sources has opened the field of nonlinear THz
physics and unlocked access to fundamental low energy excitations for ultrafast
material control. Recent advances towards controlling and employing chiral
excitations, or generally angular momentum of light, not only rely on the
measurement of undistorted intense THz fields, but also on the precise
knowledge about sophisticated THz helicity states. A recently reported and
promising detector material is $\alpha$-quartz. However, its electrooptic
response function and contributing nonlinear effects have remained elusive.
Here, we establish z-cut $\alpha$-quartz as a precise electrooptic THz detector
for full amplitude, phase and polarization measurement of intense THz fields,
all at a fraction of costs of conventional THz detectors. We experimentally
determine its complex detector response function, which is in good agreement
with our model based on predominantly known literature values. It also explains
previously observed thickness-dependent waveforms. These insights allow us to
develop a swift and reliable protocol to precisely measure arbitrary THz
polarization and helicity states. This two-dimensional electrooptic sampling
(2D-EOS) in $\alpha$-quartz fosters rapid and cost-efficient THz time-domain
ellipsometry, and enables the characterization of polarization-tailored fields
for driving chiral or other helicity-sensitive quasiparticles and topologies.
While the possibility of topological superconductivity (TSC) in hybrid
heterostructures involving topologically nontrivial band structure and
superconductors has been proposed, the realization of TSC in a single
stoichiometric material is most desired for fundamental experimental
investigation of TSC and its device applications. Bulk measurements on YRuB$_2$
detect a single superconducting gap of $\sim$ 1 meV. This is supported by our
electronic structure calculations which also reveal the existence of
topological surface states in the system. We performed surface-sensitive
Andreev reflection spectroscopy on YRuB$_2$ and detected the bulk
superconducting gap as well as another superconducting gap of $\sim$ 0.5 meV.
From our analysis of electronic structure, we show that the smaller gap is
formed in the topological surface states in YRuB$_2$ due to the proximity of
the bulk superconducting condensate. Thus, in agreement with the past
theoretical predictions, we present YRuB$_2$ as a unique system that hosts
superconducting topological surface states.
The nu=1/2+1/2 quantum Hall bilayer has been previsously modeled using
Chern-Simons-RPA-Eliashberg (CSRPAE) theory to describe pairing between the two
layers. However, these approaches are troubled by a number of divergences and
ambiguities. By using a "modified" RPA approximation to account for mass
renormalization, we can work in a limit where the cyclotron frequency is taken
to infinity, effectively projecting to a single Landau level. This,
surprisingly, controls the important divergences and removes ambiguities found
in prior attempts at CSRPAE. Examining BCS pairing of composite fermions we
find that the angular momentum channel l=+1 dominates for all distances d
between layers and at all frequency scales. Examining BCS pairing of composite
fermion electrons in one layer with composite fermion holes in the opposite
layer, we find the l=0 pairing channel dominates for all d and all frequencies.
The strength of the pairing in these two different descriptions of the same
phase of matter is found to be almost identical. This agrees well with our
understanding that these are two different but dual descriptions of the same
phase of matter.
In the rapidly evolving field of 2D materials, transition metal
dichalcogenides (TMDs) have emerged as compelling candidates for electronic
applications. This study investigates the electronic structure of the H-phase
monolayer VS$_2$ belonging to TMD family and the influence of strain on its
band structure through Density Functional Theory (DFT). We employ two different
pseudopotential approximations and a suite of computational methods including
DFT+U, GAUPBE, G0W0, and self-GW to provide a nuanced understanding of its
electronic band structure. A highlight of the study is its focus on how both
uniaxial and biaxial strains, ranging from -5% to +5%, affect the electronic
properties of the H-phase monolayer VS$_2$. Our comprehensive analysis reveals
that these tensile strains significantly widen the energy gap, with uniaxial
strains having a more pronounced effect than their biaxial counterparts. In
addition, we identify an intriguing phase transition from a semiconducting to a
metallic state under compressive strains, this transition is attributed to both
symmetry breaking and bond length variation in the uniaxial case, the bond
length in biaxial. These key findings not only enrich our understanding of the
intricate electronic behavior of monolayer VS$_2$ under different strains but
also pave the way for the design of innovative electronic devices using strain
engineering.
Adiabatic evolution is an emergent design principle for time modulated
metamaterials, often inspired by insights from topological quantum computing
such as Majorana fermions and braiding operations. However, the pursuit of
classical adiabatic metamaterials is rooted on the assumption that classical
and quantum adiabatic evolution are equivalent. We show that this is not the
case; and some instances of quantum adiabatic evolution, such as those
containing zero modes, cannot be reproduced in classical systems. This is
because mode coupling is fundamentally different in classical mechanics. We
derive classical conditions to ensure adiabaticity and demonstrate that only
under these, from quantum mechanics distinct conditions the Berry phase and
Wilczek-Zee matrix emerge as meaningful quantities encoding the geometry of
classical adiabatic evolution.
Exploiting ambipolar electrical conductivity based on graphene field-effect
transistors has raised enormous interest for high-frequency (HF) analog
electronics. Controlling the device polarity, by biasing the graphene
transistor around the vertex of the V-shaped transfer curve, enables to
redesign and highly simplify conventional analog circuits, and simultaneously
to seek for multifunctionalities specially in the HF domain. We present, here,
new insights for the design of different HF applications such as power
amplifiers, mixers, frequency multipliers, phase shifters, and modulators that
specifically leverage the inherent ambipolarity of graphene-based transistors.
We discuss coexistence of Kondo and spin excitation signals in tunneling
spectroscopy in strongly correlated polyradical $\pi$-magnetic nanographenes on
a metal surface. The Kondo signal is rationalized by a multi-orbital Kondo
screening of the unpaired electrons. The fundamental processes are spin-flips
of antiferromagnetic (AFM) order involving charged molecular multiplets. We
introduce a~perturbative model, which provides simple rules to identify the
presence of AFM channels responsible for Kondo screening. The Kondo regime is
confirmed by numerical renormalization group calculations. This framework can
be applied to similar strongly correlated open-shell systems.
In magic angle twisted bilayer graphene, transport, thermodynamic and
spectroscopic experiments pinpoint at a competition between distinct low-energy
states with and without electronic order, as well as a competition between
localized and delocalized charge carriers. In this study, we utilize Dynamical
Mean Field Theory (DMFT) on the topological heavy Fermion (THF) model of
twisted bilayer graphene to investigate the emergence of electronic
correlations and long-range order in the absence of strain. We explain the
nature of emergent insulating and correlated metallic states, as well as
transitions between them driven by three central phenomena: (i) the formation
of local spin and valley isospin moments around 100K, (ii) the ordering of the
local isospin moments around 10K, and (iii) a cascadic redistribution of charge
between localized and delocalized electronic states upon doping. At integer
fillings, we find that low energy spectral weight is depleted in the symmetric
phase, while we find insulating states with gaps enhanced by exchange coupling
in the zero-strain ordered phases. Doping away from integer filling results in
distinct metallic states: a "bad metal" above the ordering temperature, where
coherence of the low-energy electronic excitations is suppressed by scattering
off the disordered local moments, and a "good metal" in the ordered states with
coherence of quasiparticles facilitated by isospin order. Upon doping, there is
charge transfer between the localized and delocalized orbitals of the THF model
such that they get periodically filled and emptied in between integer fillings.
This charge reshuffling manifests itself in cascades of doping-induced Lifshitz
transitions, local spectral weight redistributions and periodic variations of
the electronic compressibility ranging from nearly incompressible to negative.
We give a general derivation of Ginsparg-Wilson relations for both Dirac and
Majorana fermions in any dimension. These relations encode continuous and
discrete chiral, parity and time reversal anomalies and will apply to the
various classes of free fermion topological insulators and superconductors (in
the framework of a relativistic quantum field theory in Euclidian spacetime).
We show how to formulate the exact symmetries of the lattice action and the
relevant index theorems for the anomalies.
Spin and charge pumping induced by a precessing magnetization has been
instrumental to the development of spintronics. Nonetheless, most theoretical
studies so far treat the spin-orbit coupling as a perturbation, which
disregards the dynamical competition between exchange and spin-orbit fields. In
this work, based on Keldysh formalism and Wigner expansion, we develop an
adiabatic theory of spin and charge pumping adapted to multiorbital systems
with arbitrary spin-orbit coupling. We apply this theory to the magnetic Rashba
gas and magnetic graphene cases and discuss the pumped ac and dc current. We
show that the pumped current possesses both intrinsic and extrinsic
contributions, akin to the magnetic damping. In addition, we find that higher
harmonics can be generated under large angle precession and we propose a couple
of experimental setups where such an effect could be experimentally observed.
Second-order topological insulators are characterized by helical,
non-spin-degenerate, one-dimensional states running along opposite crystal
hinges, with no backscattering. Injecting superconducting pairs therefore
entails splitting Cooper pairs into two families of helical Andreev states of
opposite helicity, one at each hinge. Here we provide evidence for such
separation via the measurement and analysis of switching supercurrent
statistics of a crystalline nanoring of bismuth. Using a phenomenological model
of two helical Andreev hinge modes, we find that pairs relax at a rate
comparable to individual quasiparticles, in contrast with the much faster pair
relaxation of non-topological systems. This constitutes a unique tell-tale sign
of the spatial separation of topological helical hinges.
Quantum spin Hall insulators are a class of topological materials that has
been extensively studied during the past decade. One of their distinctive
features is the presence of a finite band gap in the bulk and gapless,
topologically protected edge states that are spin-momentum locked. These
materials are characterized by a $\mathbb{Z}_2$ topological order where, in the
2D case, a single topological invariant can be even or odd for a trivial or a
topological material, respectively. Thanks to their interesting properties,
such as the realization of dissipationless spin currents, spin pumping and spin
filtering, they are of great interest in the field of electronics, spintronics
and quantum computing. In this work we perform an high-throughput screening of
Quantum spin Hall insulators starting from a set of 783 2D exfoliable
materials, recently identified from a systematic screening of the ICSD, COD,
and MPDS databases. We find a new $\mathbb{Z}_2$ topological insulator (HgNS)
as well as 3 already known ones and 7 direect gap metals that have the
potential of becoming Quantum spin Hall insulators under a reasonably weak
external perturbation.
Quantized conductance plateaus, a celebrated hallmark of Majorana bound
states (MBSs) predicted a decade ago, have recently been observed with small
deviations in iron-based superconductors and hybrid nanowires. Here, we
demonstrate that nearly quantized conductance plateaus can also arise from
trivial Andreev bound states (ABSs). To avoid ABS interruptions, we propose
identifying ABS-induced quantized conductance plateaus by measuring the
associated differential current noise $P$ versus bias voltage $V$.
Specifically, for a quantized conductance plateau induced by one or multiple
low-energy ABSs, the associated $P(V)$ curve exhibits a double-peak around zero
bias, with the peak positions at $e|V|\approx 3k_B T$ (where $T$ is the
temperature) and peak values larger than $2e^3/h$. These features greatly
contrast those of an MBS or quasi-MBS, whose $P(V)$ curve displays a broad
zero-bias dip and is consistently below $2e^3/h$. This protocol can be
practically implemented in a variety of MBS candidate platforms using an
electrode or STM tip as a probe.
In this paper, we report the theoretical investigation and experimental
realization of a new spin-gapless semiconductor (SGSs) compound CoFeMnSn
belonging to the family of quaternary Heusler alloys. Through the use of
several ground-state energy calculations, the most stable structure has been
identified. Calculations of the spin-polarized band structure in optimized
structure's reveals the SGS nature of the compound. The compound form in an
ordered crystal structure and exhibit a high ferromagnetic transition
temperature (T$_{\rm C}$ = 560 K), making the material excellent for room
temperature applications. Adherence of saturation magnetization to the
Slater-Pauling rule, together with the nearly temperature-independent
resistivity, conductivity, and carrier concentration of the compound in the
temperature regime 5$-$300 K along with the low value of anomalous Hall
conductivity (AHC) further confirms the SGS nature. Theoretical calculations
also reveal the robustness of the SGS state due to lattice contraction and one
can obtain a high value of intrinsic AHC using hole doping. Combined SGS and
topological properties of the compound make CoFeMnSn suitable for spintronics
and magneto-electronics devices.
Topological lattice defects, such as dislocations and grain boundaries (GBs),
are ubiquitously present in the bulk of quantum materials and externally
tunable in metamaterials. In terms of robust modes, localized near the defect
cores, they are instrumental in identifying topological crystals, featuring the
hallmark band inversion at a finite momentum (translationally active type).
Here we show that GB superlattices in both two-dimensional and
three-dimensional translationally active higher-order topological insulators
harbor a myriad of dispersive modes that are typically placed at finite
energies, but always well-separated from the bulk states. However, when the
Burgers vector of the constituting edge dislocations points toward the gapless
corners or hinges, both second-order and third-order topological insulators
accommodate self-organized emergent topological metals near the zero energy
(half-filling) in the GB mini Brillouin zone. We discuss possible material
platforms where our proposed scenarios can be realized through the
band-structure and defect engineering.
The Quantum Hall Effect (QHE) is a 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' short device (on a scale of
$10 \mu m$), we separate the longitudinal thermal conductance, $\kappa_{xx}T$
(due to bulk's contribution), from the topological transverse value
$\kappa_{xy}T$, by eliminating the contribution of the edge modes. When the
magnetic field is tuned away from the conductance plateau center, the localized
states in the bulk conduct heat efficiently ($\kappa_{xx}T \propto T$), while
the bulk remains electrically insulating. Fractional states in the first
excited Landau level, such as the $\nu=7/3$ and $\nu=5/2$, conduct heat
throughout the plateau with a finite $\kappa_{xx} T$. We propose a theoretical
model that identifies the localized states as the cause of the finite heat
conductance, agreeing qualitatively with our experimental findings.
We investigate the gauging of higher-form finite Abelian symmetries and their
sub-groups in quantum spin models in spatial dimensions $d=2$ and 3. Doing so,
we naturally uncover gauged models with dual higher-group symmetries and
potential mixed 't Hooft anomalies. We demonstrate that the mixed anomalies
manifest as the symmetry fractionalization of higher-form symmetries
participating in the mixed anomaly. Gauging is realized as an isomorphism or
duality between the bond algebras that generate the space of quantum spin
models with the dual generalized symmetry structures. We explore the mapping of
gapped phases under such gauging related dualities for 0-form and 1-form
symmetries in spatial dimension $d=2$ and 3. In $d=2$, these include several
non-trivial dualities between short-range entangled gapped phases with 0-form
symmetries and 0-form symmetry enriched Higgs and (twisted) deconfined phases
of the gauged theory with possible symmetry fractionalizations. Such dualities
also imply strong constraints on several unconventional, i.e., deconfined or
topological transitions. In $d=3$, among others, we find, dualities between
topological orders via gauging of 1-form symmetries. Hamiltonians self-dual
under gauging of 1-form symmetries host emergent non-invertible symmetries,
realizing higher-categorical generalizations of the Tambara-Yamagami fusion
category.
We use surface enhanced Raman spectroscopy (SERS) in studying functionalized
Au nanoparticles (AuNPs) when incorporated in active-carbon (A-C) based
super-capacitor cells. We observe a resonance-like enhancement in the graphitic
line (G-line) vs the D-line (defect line) of the A-C electrode. We also
observed an enhancement in the specific capacitance of super-capacitor cell as
a function of AuNPs concentration. All of these may be explained by the
formation of a quasi-2D array of AuNPs at the interface between electrolyte and
the electrode.
We describe the chiral Kondo chain model based on the symplectic Kondo effect
and demonstrate that it has a quantum critical ground state populated by
non-Abelian anyons. We show that the fusion channel of two arbitrary anyons can
be detected by locally coupling the two anyons to an extra single channel of
chiral current and measuring the corresponding conductance at finite frequency.
Based on such measurements, we propose that the chiral Kondo chain model with
symplectic symmetry can be used for implementation of measurement-only
topological quantum computations, and it possesses a number of distinct
features favorable for such applications. The sources and effects of errors in
the proposed system are analyzed, and possible material realizations are
discussed.
It is show that one can derive a novel BPS bound for the gauged
Non-Linear-Sigma-Model (NLSM) Maxwell theory in (3+1) dimensions which can
actually be saturated. Such novel bound is constructed using Hamilton-Jacobi
equation from classical mechanics. The configurations saturating the bound
represent Hadronic layers possessing both Baryonic charge and magnetic flux.
However, unlike what happens in the more common situations, the topological
charge which appears naturally in the BPS bound is a non-linear function of the
Baryonic charge. This BPS bound can be saturated when the surface area of the
layer is quantized. The far-reaching implications of these results are
discussed. In particular, we determine the exact relation between the magnetic
flux and the Baryonic charge as well as the critical value of the Baryonic
chemical potential beyond which these configurations become thermodynamically
unstable.
In our recent paper [Mosallanejad et al., Phys. Rev. B 107(18), 184314,
2023], we have derived a Floquet electronic friction model to describe
nonadiabatic molecular dynamics near metal surfaces in the presence of periodic
driving. In this work, we demonstrate that Floquet driving can introduce an
anti-symmetric electronic friction tensor in quantum transport, resulting in
circular motion of the nuclei in the long time limit. Furthermore, we show that
such a Lorentz-like force strongly affects nuclear motion: at lower voltage
bias, Floquet driving can increase the temperature of nuclei; at larger voltage
bias, Floquet driving can decrease the temperature of nuclei. In addition,
Floquet driving can affect electron transport strenuously. Finally, we show
that there is an optimal frequency that maximizes electron current. We expect
that the Floquet electronic friction model is a powerful tool to study
nonadiabatic molecular dynamics near metal surfaces under Floquet driving in
complex systems.

Date of feed: Mon, 18 Sep 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]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **Deciphering the Enigma of Cu-Doped Lead Apatite (LK-99): Structural Insights, Electronic Properties, and Implications for Ambient-Pressure Superconductivity. (arXiv:2309.07928v1 [cond-mat.supr-con])**

Jun Li, Qi An

**Curved vortex surfaces in four-dimensional superfluids: II. Equal-frequency double rotations. (arXiv:2309.08016v1 [cond-mat.quant-gas])**

Ben McCanna, Hannah M. Price

**A substitutional quantum defect in WS$_2$ discovered by high-throughput computational screening and fabricated by site-selective STM manipulation. (arXiv:2309.08032v1 [cond-mat.mtrl-sci])**

John C. Thomas, Wei Chen, Yihuang Xiong, Bradford A. Barker, Junze Zhou, Weiru Chen, Antonio Rossi, Nolan Kelly, Zhuohang Yu, Da Zhou, Shalini Kumari, Edward S. Barnard, Joshua A. Robinson, Mauricio Terrones, Adam Schwartzberg, D. Frank Ogletree, Eli Rotenberg, Marcus M. Noack, Sinéad Griffin, Archana Raja, David A. Strubbe, Gian-Marco Rignanese, Alexander Weber-Bargioni, Geoffroy Hautier

**Fermi surface and light quasi particles in hourglass nodal chain metal \b{eta}-ReO2. (arXiv:2309.08073v1 [cond-mat.str-el])**

Daigorou Hirai, Takahito Anbai, Takako Konoike, Shinya Uji, Yuya Hattori, Taichi Terashima, Hajime Ishikawa, Koichi Kindo, Naoyuki Katayama, Tamio Oguchi, Zenji Hiroi

**A facile direct device transfer of monolayer MoS2 towards improvement in transistor performances. (arXiv:2309.08205v1 [cond-mat.mes-hall])**

Sameer Kumar Mallik, Roshan Padhan, Suman Roy, Mousam Charan Sahu, Sandhyarani Sahoo, Satyaprakash Sahoo

**Quantum Hall effect in topological Dirac semimetals modulated by the Lifshitz transition of the Fermi arc surface states. (arXiv:2309.08233v1 [cond-mat.str-el])**

Tao-Rui Qin, Zhuo-Hua Chen, Tian-Xing Liu, Fu-Yang Chen, Hou-Jian Duan, Ming-Xun Deng, Rui-Qiang Wang

**Superconductivity and vortex structure on Bi$_{2}$Te$_{3}$/FeTe$_{0.55}$Se$_{0.45}$ heterostructures with different thickness of Bi$_{2}$Te$_{3}$ films. (arXiv:2309.08246v1 [cond-mat.supr-con])**

Kailun Chen, Mingyang Chen, Chuanhao Wen, Zhiyong Hou, Huan Yang, Hai-Hu Wen

**Characterization of the Intrinsic and Extrinsic Resistances of a Microwave Graphene FET Under Zero Transconductance Conditions. (arXiv:2309.08282v1 [cond-mat.mes-hall])**

Xiomara Ribero-Figueroa, Anibal Pacheco-Sanchez, Aida Mansouri, Pankaj Kumar, Omid Habibpour, Herbert Zirath, Roman Sordan, Francisco Pasadas, David Jiménez, Reydezel Torres-Torres

**Quartz as an Accurate High-Field Low-Cost THz Helicity Detector. (arXiv:2309.08286v1 [physics.optics])**

Maximilian Frenzel, Joanna M. Urban, Leona Nest, Tobias Kampfrath, Michael S. Spencer, Sebastian F. Maehrlein

**Topological surface states host superconductivity induced by the bulk condensate in YRuB$_2$. (arXiv:2309.08308v1 [cond-mat.supr-con])**

Nikhlesh Singh Mehta, Bikash Patra, Ghulam Mohmad, Mona Garg, Pooja Bhardwaj, P. K. Meena, K. Motla, Ravi Prakash Singh, Bahadur Singh, Goutam Sheet

**Chern-Simons-Modified-RPA-Eliashberg Theory of the nu=1/2+1/2 Quantum Hall Bilayer. (arXiv:2309.08329v1 [cond-mat.str-el])**

Tevž Lotrič, Steven H. Simon

**Phase Transformations and Energy Gap Variations in Uniaxial and Biaxial Strained Monolayer VS$_2$ TMDs: A Comprehensive DFT and Beyond-DFT Study. (arXiv:2309.08393v1 [cond-mat.mtrl-sci])**

Oguzhan Orhan, Şener Özönder, Soner Ozgen

**Differences between quantum and classical adiabatic evolution. (arXiv:2309.08510v1 [cond-mat.mes-hall])**

Cyrill Bösch, Andreas Fichtner, Marc Serra Garcia

**Exploiting ambipolarity in graphene field-effect transistors for novel designs on high-frequency analog electronics. (arXiv:2309.08519v1 [cond-mat.mes-hall])**

Francisco Pasadas, Alberto Medina-Rull, Francisco G. Ruiz, Javier Noe Ramos-Silva, Anibal Pacheco-Sanchez, Mari Carmen Pardo, Alejandro Toral-Lopez, Andrés Godoy, Eloy Ramírez-García, David Jiménez, Enrique G. Marin

**Multi-orbital Kondo screening in strongly correlated polyradical nanographenes. (arXiv:2309.08524v1 [cond-mat.str-el])**

Aitor Calvo-Fernández, Diego Soler-Polo, Andrés Pinar Solé, Shaotang Song, Oleksander Stetsovych, Manish Kumar, Guangwu Li, Jishan Wu, Jiong Lu, Asier Eiguren, María Blanco-Rey, Pavel Jelínek

**Dynamical correlations and order in magic-angle twisted bilayer graphene. (arXiv:2309.08529v1 [cond-mat.str-el])**

Gautam Rai, Lorenzo Crippa, Dumitru Călugăru, Haoyu Hu, Luca de' Medici, Antoine Georges, B. Andrei Bernevig, Roser Valentí, Giorgio Sangiovanni, Tim Wehling

**Generalized Ginsparg-Wilson equations. (arXiv:2309.08542v1 [hep-lat])**

Michael Clancy, David B. Kaplan, Hersh Singh

**Charge pumping with strong spin-orbit coupling: Fermi surface breathing and higher harmonic generation. (arXiv:2309.08597v1 [cond-mat.mes-hall])**

A. Manchon, A. Pezo

**Long-lived Andreev states as evidence for protected hinge modes in a bismuth nanoring Josephson junction. (arXiv:2110.13539v2 [cond-mat.mes-hall] UPDATED)**

A. Bernard, Y. Peng, A. Kasumov, R. Deblock, M. Ferrier, F. Fortuna, V. T. Volkov, Yu. A. Kasumov, Y. Oreg, F. von Oppen, H. Bouchiat, S. Gueron

**A complementary screening for quantum spin Hall insulators in 2D exfoliable materials. (arXiv:2205.02583v3 [cond-mat.mes-hall] UPDATED)**

Davide Grassano, Davide Campi, Antimo Marrazzo, Nicola Marzari

**Differential current noise as an identifier of Andreev bound states that induce nearly quantized conductance plateaus. (arXiv:2301.06451v2 [cond-mat.mes-hall] UPDATED)**

Zhan Cao, Gu Zhang, Hao Zhang, Ying-Xin Liang, Wan-Xiu He, Ke He, Dong E. Liu

**Rare observation of spin-gapless semiconducting characteristics and related band topology of quaternary Heusler alloy CoFeMnSn. (arXiv:2303.08589v2 [cond-mat.str-el] UPDATED)**

Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar

**Emergent metallicity at the grain boundaries of higher-order topological insulators. (arXiv:2304.15009v2 [cond-mat.mes-hall] UPDATED)**

Daniel J. Salib, Vladimir Juričić, Bitan Roy

**Heat Conductance of the Quantum Hall Bulk. (arXiv:2306.14977v2 [cond-mat.mes-hall] UPDATED)**

Ron Aharon Melcer, Avigail Gil, Arup-Kumar Paul, Priya Tiwary, Vladimir Umansky, Moty Heiblum, Yuval Oreg, Ady Stern, Erez Berg

**Symmetry fractionalization, mixed-anomalies and dualities in quantum spin models with generalized symmetries. (arXiv:2307.01266v2 [cond-mat.str-el] UPDATED)**

Heidar Moradi, Ömer M. Aksoy, Jens H. Bardarson, Apoorv Tiwari

**Raman spectroscopy of active-carbon electrodes when Au colloids are placed at the electrolyte/electrode interface. (arXiv:2307.05310v2 [cond-mat.mes-hall] UPDATED)**

H. Grebel, Y. Zhang

**Topological Quantum Computation on a Chiral Kondo Chain. (arXiv:2309.03010v2 [cond-mat.str-el] UPDATED)**

Tianhao Ren, Elio J. König, Alexei M. Tsvelik

**Magnetized Baryonic layer and a novel BPS bound in the gauged-Non-Linear-Sigma-Model-Maxwell theory in (3+1)-dimensions through Hamilton-Jacobi equation. (arXiv:2309.03153v2 [hep-th] UPDATED)**

Fabrizio Canfora

**Floquet Nonadiabatic Nuclear Dynamics with Photoinduced Lorenz-Like Force in Quantum Transport. (arXiv:2308.12660v1 [quant-ph] CROSS LISTED)**

Jingqi Chen, Wei Liu, Wenjie Dou

Found 8 papers in nano-lett

Date of feed: Sat, 16 Sep 2023 13:06:39 GMT**Search terms: **(topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99) **[ASAP] ZrTe2 Compound Dirac Semimetal Contacts for High-Performance MoS2 Transistors**

Xiaokun Wen, Wenyu Lei, Xinlu Li, Boyuan Di, Ye Zhou, Jia Zhang, Yuhui Zhang, Liufan Li, Haixin Chang, and Wenfeng ZhangNano LettersDOI: 10.1021/acs.nanolett.3c01554

**[ASAP] Toroidal Dipole BIC-Driven Highly Robust Perfect Absorption with a Graphene-Loaded Metasurface**

Rong Jin, Lujun Huang, Chaobiao Zhou, Jiaoyang Guo, Zhenchu Fu, Jian Chen, Jian Wang, Xin Li, Feilong Yu, Jin Chen, Zengyue Zhao, Xiaoshuang Chen, Wei Lu, and Guanhai LiNano LettersDOI: 10.1021/acs.nanolett.3c02958

**[ASAP] Determining the Number of Graphene Nanoribbons in Dual-Gate Field-Effect Transistors**

Jian Zhang, Gabriela Borin Barin, Roman Furrer, Cheng-Zhuo Du, Xiao-Ye Wang, Klaus Müllen, Pascal Ruffieux, Roman Fasel, Michel Calame, and Mickael L. PerrinNano LettersDOI: 10.1021/acs.nanolett.3c01931

**[ASAP] Ultrafast Electronic Dynamics in Anisotropic Indirect Interlayer Excitonic States of Monolayer WSe2/ReS2 Heterojunctions**

Yulu Qin, Rui Wang, Xiaoyuan Wu, Yunkun Wang, Xiaofang Li, Yunan Gao, Liangyou Peng, Qihuang Gong, and Yunquan LiuNano LettersDOI: 10.1021/acs.nanolett.3c02488

**[ASAP] Kinetics of Nanobubbles in Tiny-Angle Twisted Bilayer Graphene**

Chao Yan, Ya-Xin Zhao, Yi-Wen Liu, and Lin HeNano LettersDOI: 10.1021/acs.nanolett.3c02286

**[ASAP] Ultraflat Graphene Oxide Membranes with Newton-Ring Prepared by Vortex Shear Field for Ion Sieving**

Tianqi Liu, Xin Zhang, Jing Liang, Wenbin Liang, Wei Qi, Longlong Tian, Lijuan Qian, Zhan Li, and Ximeng ChenNano LettersDOI: 10.1021/acs.nanolett.3c02613

**[ASAP] Elastocaloric Effect in Graphene Kirigami**

Luiz A. Ribeiro Junior, Marcelo L. Pereira Junior, and Alexandre F. FonsecaNano LettersDOI: 10.1021/acs.nanolett.3c02260

**[ASAP] Spatially Coherent Tip-Enhanced Raman Spectroscopy Measurements of Electron–Phonon Interaction in a Graphene Device**

Rafael Battistella Nadas, Andreij C. Gadelha, Tiago C. Barbosa, Cassiano Rabelo, Thiago de Lourenço e Vasconcelos, Vitor Monken, Ary V. R. Portes, Kenji Watanabe, Takashi Taniguchi, Jhonattan C. Ramirez, Leonardo C. Campos, Riichiro Saito, Luiz Gustavo Cançado, and Ado JorioNano LettersDOI: 10.1021/acs.nanolett.3c00851