publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2019-08-29 | Evidence for weak antilocalization-weak localization crossover and metal-insulator transition in CaCu$_{3}$Ru$_{4}$O$_{12}$ thin films | Artificial confinement of electrons by tailoring the layer thickness has
turned out to be a powerful tool to harness control over competing phases in
nano-layers of complex oxides. We investigate the effect of dimensionality on
transport properties of $d$-electron based heavy-fermion metal
CaCu$_{3}$Ru$_{4}$O$_{12}$. T... | 1908.11128v2 |
2021-01-17 | Surface-Wave Propagation on Non-Hermitian Metasurfaces with Extreme Anisotropy | Electromagnetic metasurfaces enable the advanced control of surface-wave
propagation by spatially tailoring the local surface reactance. Interestingly,
tailoring the surface resistance distribution in space provides new, largely
unexplored degrees of freedom. Here, we show that suitable spatial modulations
of the surfa... | 2101.06641v1 |
2012-06-11 | Multiorbital effects on the transport and the superconducting fluctuations in LiFeAs | The resistivity, Hall effect and transverse magnetoresistance (MR) have been
measured in low residual resistivity single crystals of LiFeAs. A comparison
with angle resolved photoemission spectroscopy and quantum oscillation data
implies that four carrier bands unevenly contribute to the transport. However
the scatteri... | 1206.2278v2 |
2015-04-27 | Two types of nematicity in the phase diagram of the cuprate superconductor YBa$_2$Cu$_3$O$_y$ | Nematicity has emerged as a key feature of cuprate superconductors, but its
link to other fundamental properties such as superconductivity, charge order
and the pseudogap remains unclear. Here we use measurements of transport
anisotropy in YBa$_2$Cu$_3$O$_y$ to distinguish two types of nematicity. The
first is associat... | 1504.06972v3 |
2015-06-29 | Magnetization and magneto-transport studies on Fe$_2$VAl$_{1-x}$Si$_x$ | We report on magnetoresistance, Hall and magnetization measurements of
Fe2VAl1-xSix Heusler compounds for x= 0.005, 0.015, 0.02. There is a systematic
change in the temperature coefficient of resistance (TCR) from negative to
positive as the Si composition is increased. The Hall co-efficient shows that
the carriers are... | 1506.08516v1 |
2015-07-07 | Two-dimensional superconductor-insulator quantum phase transitions in an electron-doped cuprate | We use ionic liquid-assisted electric field effect to tune the carrier
density in an electron-doped cuprate ultrathin film and cause a two-dimensional
superconductor-insulator transition (SIT). The low upper critical field in this
system allows us to perform magnetic field (B)-induced SIT in the liquid-gated
supercondu... | 1507.01668v1 |
2015-07-07 | S-wave Superconductivity in Optimally Doped SrTi$_{1-x}$Nb$_x$O$_3$ Unveiled by Electron Irradiation | We report on a study of electric resistivity and magnetic susceptibility
measurements in electron irradiated SrTi$_{0.987}$Nb$_{0.013}$O$_3$ single
crystals. Point-like defects, induced by electron irradiation, lead to an
almost threefold enhancement of the residual resistivity, but barely affect the
superconducting cr... | 1507.01867v2 |
2015-07-15 | Depinning of Trapped Magnetic Flux in Bulk Niobium SRF Cavities | Trapped magnetic flux is known to be a significant contribution to the
residual resistance of superconducting radio frequency (SRF) cavities. The
additional losses depend strongly if the vortices are depinned by the RF. The
depinning is affected by the purity of the material, and the size of the
pinning centers, as wel... | 1507.04105v1 |
2016-09-08 | Pressure-induced topological phase transition in polar semiconductor BiTeBr | We performed X-ray diffraction and electrical resistivity measurement up to
pressures of 5 GPa and the first-principles calculations utilizing experimental
structural parameters to investigate the pressure-induced topological phase
transition in BiTeBr having a noncentrosymmetric layered structure (space group
P3m1). T... | 1609.02274v1 |
2016-09-27 | Anomalous Feedback and Negative Domain Wall Resistance | Magnetic induction can be regarded as a negative feedback effect, where the
motive-force opposes the change of magnetic flux that generates the
motive-force. In artificial electromagnetics emerging from spintronics,
however, this is not necessarily the case. By studying the current-induced
domain wall dynamics in a cyl... | 1609.08250v1 |
2018-07-19 | General theory of topological Hall effect in systems with chiral spin textures | We present a consistent theory of the topological Hall effect (THE) in 2D
magnetic systems with disordered array of chiral spin textures, such as
magnetic skyrmions. We focus on the scattering regime when the mean-free path
of itinerant electrons exceeds the spin texture size, and THE arises from the
asymmetric carrier... | 1807.07396v1 |
2018-12-21 | Thermoelectric transport in two-dimensional topological insulator state based on HgTe quantum well | The thermoelectric response of HgTe quantum wells in the state of
two-dimensional topological insulator (2D TI) has been studied experimentally.
Ambipolar thermopower, typical for an electron-hole system, has been observed
across the charge neutrality point, where the carrier type changes from
electrons to holes accord... | 1812.09226v1 |
2019-01-09 | Crystal structures and the sign reversal Hall resistivity in iron-based superconductors Lix(C3H10N2)0.32FeSe (0.15<x<0.4) | We report the crystal structure, superconductivity and normal state
properties of two iron-based materials, Li0.15(C3H10N2)0.32FeSe(P-4) and
Lix(C3H10N2)0.32FeSe(P4/nmm, 0.25<x<0.4) with superconducting transition
temperature from 40~46K. The determined crystal structures revealed a coupling
between Li concentration an... | 1901.02580v1 |
2019-01-18 | Tuning electric charge scattering in YBCO single crystals via irradiation with MeV electrons | Irradiation with electrons is an efficient approach to inducing a large
number of defects with a minimal impact on the material itself. Analysis of the
energy transfer from an accelerated particle smashing into the crystal lattice
shows that only electrons with MeV energies produce point defects in the form
of intersti... | 1901.06293v1 |
2019-06-11 | Characterisation of Li in the surface film of a corrosion resistant Mg-Li(-Al-Y-Zr) alloy | The surface film formed upon Mg-Li(-Al-Y-Zr) following aqueous immersion and
air-exposure was investigated. This alloy (which contains 30.3 at. % Li)
possesses a bcc crystal structure and has been reported as being corrosion
resistant. It was determined that the principal components of the surface film
were Li2CO3 and ... | 1906.04508v1 |
2019-06-11 | Electrical Switching of Tristate Antiferromagnetic Néel Order in $α$-Fe$_{2}$O$_{3}$ Epitaxial Films | The ability to manipulate antiferromagnetic (AF) moments is a key requirement
for the emerging field of antiferromagnetic spintronics. Electrical switching
of bi-state AF moments has been demonstrated in metallic AFs, CuMnAs and
Mn$_2$Au. Recently, current-induced "saw-tooth" shaped Hall resistance was
reported in Pt/N... | 1906.04694v2 |
2019-10-01 | Valley Hall Effect and Non-Local Resistance in Locally Gapped Graphene | We report on the emergence of bulk, valley-polarized currents in
graphene-based devices, driven by spatially varying regions of broken
sublattice symmetry, and revealed by non-local resistance ($R_\mathrm{NL}$)
fingerprints. By using a combination of quantum transport formalisms, giving
access to bulk properties as wel... | 1910.00489v2 |
2019-11-14 | Free-standing silicon shadow masks for transmon qubit fabrication | Nanofabrication techniques for superconducting qubits rely on resist-based
masks patterned by electron-beam or optical lithography. We have developed an
alternative nanofabrication technique based on free-standing silicon shadow
masks fabricated from silicon-on-insulator wafers. These silicon shadow masks
not only elim... | 1911.05924v2 |
2019-11-21 | Experimental Realization of a Reconfigurable Electroacoustic Topological Insulator | A substantial challenge in guiding elastic waves is the presence of
reflection and scattering at sharp edges, defects, and disorders. Recently,
mechanical topological insulators have sought to overcome this challenge by
supporting back-scattering resistant wave transmission. In this Letter, we
propose and experimentall... | 1911.09608v1 |
2020-01-07 | Joule heating in the normal-superconductor phase transition in a magnetic field | Joule heating is a non-equilibrium dissipative process that occurs in a
normal metal when an electric current flows, in an amount proportional to the
metal's resistance. When it is induced by eddy currents resulting from a change
in magnetic flux, it is also proportional to the rate at which the magnetic
flux changes. ... | 2001.07509v2 |
2020-05-05 | Study of single crystalline SrAgSb and SrAuSb semimetals | Given renewed interest in the electronic properties of semimetallic compounds
with varying degrees of spin orbit coupling we have grown single crystals of
SrAgSb and SrAuSb, measured their temperature and field dependent electrical
resistivity and magnetization and performed density functional theory (DFT)
band structu... | 2005.02323v1 |
2020-05-12 | Large anisotropic topological Hall effect in a hexagonal non-collinear magnet Fe5Sn3 | We report the observation of a large anisotropic topological Hall effect
(THE) in the hexagonal non-collinear magnet Fe5Sn3 single crystals. It is found
that the sign of the topological Hall resistivity is negative when a magnetic
field H perpendicular to the bc-plane (H\perp bc-plane), however, it changes
form negativ... | 2005.05709v1 |
2020-05-16 | Defect Level Switching for Highly-Nonlinear and Hysteretic Electronic Devices | Nonlinear and hysteretic electrical devices are needed for applications from
circuit protection to next-generation computing. Widely-studied devices for
resistive switching are based on mass transport, such as the drift of ions in
an electric field, and on collective phenomena, such as insulator-metal
transitions. We a... | 2005.07935v1 |
2020-06-04 | Competition between ferromagnetic and antiferromagnetic states in Al8.5-xFe23Ge12.5+x (0<=x<=3) | Polycrystalline Al7+xFe23Ge14-x-type orthorhombic Al8.5-xFe23Ge12.5+x
(0<=x<=3) compounds were studied by X-ray diffraction measurement,
metallographic examination, and magnetization and electrical resistivity
measurements. The lattice parameters show anisotropic x dependences, reflecting
a lower symmetry of rather com... | 2006.03152v1 |
2020-06-08 | Anisotropic physical properties and large critical current density in KCa${_2}$Fe${_4}$As${_4}$F${_2}$ single crystal | We present a systematic study of electrical resistivity, Hall coefficient,
magneto-optical imaging, magnetization, and STEM analyses of
KCa${_2}$Fe${_4}$As${_4}$F${_2}$ single crystals. Sharp diamagnetic transition
and magneto-optical imaging reveal homogeneity of single crystal and prominent
Bean-like penetrations of ... | 2006.04478v1 |
2020-06-12 | Unraveling ferroelectric polarization and ionic contributions to electroresistance in epitaxial Hf0.5Zr0.5O2 tunnel junctions | Tunnel devices based on ferroelectric Hf0.5Zr0.5O2 (HZO) barriers hold great
promises for emerging data storage and computing technologies. The resistance
state of the device can be changed by a suitable writing voltage. However, the
microscopic mechanisms leading to the resistance change are an intricate
interplay bet... | 2006.07093v1 |
2020-06-30 | 2D MoSe2 as a Promising Chemo-resistive Sensor for N2O Detection: A DFT Approach | We have investigated the impact of toxic N2O gas upon structural and
electronic properties of 2D MoSe2 monolayer using DFT approach. In this work,
as a result of N2O gas absorption, charge transfer, band gap and density of
states (DOS) are changed and these parameters are extracted as electronic
properties of 2D MoSe2 ... | 2006.16698v2 |
2020-07-09 | Magnetoresistance scaling, disorder, `hot spots' and the origin of $T$-linear resistivity in BaFe$_2$(As$_{1-x}$P$_x$)$_2$ | The scaling of $H$-linear magnetoresistance in field and temperature was
measured in under-doped (x = 0.19) and optimally-doped
(x=0.31)~BaFe$_2$(As$_{1-x}$P$_x$)$_2$. We analyze the data based on an orbital
model in the presence of strongly anisotropic quasiparticle spectra and
scattering time due to antiferromagnetis... | 2007.04970v1 |
2020-07-28 | A Novel Compact Si-B-N Barrier on Mg-Li Alloys via Plasma Treatment | Mg-Li alloys have attracted much attention due to their superior properties.
However, it is a great challenge to improve their inferior oxidation and
corrosion resistance. We report a novel Si-B-N ceramic film deposited on the
Mg-9.6Li alloy surface as an effective barrier against oxidation and corrosion.
The films wer... | 2007.14170v1 |
2020-08-13 | Resistivity saturation in Kondo insulators | Resistivities of heavy-fermion insulators typically saturate below a
characteristic temperature $T^*$. For some, metallic surface states,
potentially from a non-trivial bulk topology, are a likely source of residual
conduction. Here, we establish an alternative mechanism: At low temperature, in
addition to the charge g... | 2008.05846v1 |
2020-08-21 | Growth and anisotropy evaluation of NbBiCh$_3$ (Ch = S, Se) misfit-layered superconducting single crystals | NbBiCh$_3$ (Ch = S, Se) misfit-layered superconducting single crystals were
successfully grown using a CsCl/KCl flux for the first time. The obtained
crystals had a well-developed habit parallel to the c-plane with a typical
width of 1-2 mm and thickness of 10-40 um. The superconducting transition
temperatures with zer... | 2008.09322v1 |
2020-08-27 | Core-structure and lattice resistance of twinning dislocations in fcc metals | Metals with fcc structure may exhibit deformation twinning under specific
conditions, which is an interesting but somewhat elusive aspect of their
deformation behavior. It is well acknowledged that the phenomenon occurs
through the activities of twinning partial dislocations. However, the lack of a
comprehensive unders... | 2008.11937v1 |
2020-10-11 | Electrical properties of thermal oxide scales on pure iron in liquid lead-bismuth eutectic | The impedance behavior of pre-oxidized iron in liquid lead-bismuth eutectic
(LBE) at 200 oC is studied using electrochemical impedance spectroscopy. The
structures and resistance of oxide grown on iron oxidized in air at different
temperatures and durations are compared. The results show that the resistance
of the oxid... | 2010.05372v1 |
2020-10-14 | Competing spin modulations in a magnetically frustrated semimetal EuCuSb | The competing magnetic ground states of the itinerant magnet EuCuSb, which
has a hexagonal layered structure, were studied via magnetization, resistivity,
and neutron diffraction measurements on single-crystal samples. EuCuSb has a
three-dimensional semimetallic band structure as confirmed by band calculation
and angle... | 2010.06841v1 |
2020-10-20 | Strange metals as ersatz Fermi liquids | A long standing mystery of fundamental importance in correlated electron
physics is to understand strange non-Fermi liquid metals that are seen in
diverse quantum materials. A striking experimental feature of these metals is a
resistivity that is linear in temperature ($T$). In this paper we ask what it
takes to obtain... | 2010.10523v3 |
2020-11-06 | Molecular Dynamic Study of Local Interfacial Thermal Resistance of Solid-Liquid and Solid-Solid Interfaces: Water and Nanotextured Surface | Degradation in performances of air conditioners and refrigerators is caused
by a frost formation and adhesion on the surface. In the present study, by
means of the classical molecular dynamics simulation, we investigate how and
how much the nanotextured surface characteristics, such as surface wettability
and geometry,... | 2011.03184v2 |
2020-11-10 | Thickness induced metal to insulator charge transport and unusual hydrogen response in granular palladium nanofilms | This work reports a systematic study of the evolution of charge transport
mechanism in granular ultra-thin films of palladium of thickness varying
between 6nm and 2nm. While the films with thickness > 4nm exhibit metallic
behaviour, that at 3nm thickness undergoes a metal-insulator transition at
19.5K. In contrast, the... | 2011.05123v1 |
2020-11-23 | From hidden metal-insulator transition to Planckian-like dissipation by tuning disorder in a nickelate | Heavily oxygen deficient NdNiO$_3$ (NNO) films, which are insulating due to
electron localization, contain pristine regions that undergo a hidden
metal-insulator transition. Increasing oxygen content increases the
connectivity of the metallic regions and the metal-insulator transition is
first revealed, upon reaching t... | 2011.11535v2 |
2020-11-26 | All-MOCVD-Grown Gallium Nitride Diodes with Ultra-Low Resistance Tunnel Junctions | We carefully investigate three important effects including postgrowth
activation annealing, delta ({\delta}) dose and p+-GaN layer thickness and
experimentally demonstrate their influence on the electrical properties of GaN
p-n homojunction diodes with a tunnel junction (TJ)-based p-contact. The p-n
diodes and TJ struc... | 2011.13431v1 |
2020-12-29 | Efficient partitioning of surface Green's function: toward ab initio contact resistance study | In this work, we propose an efficient computational scheme for
first-principle quantum transport simulations to evaluate the open-boundary
conditions. Its partitioning differentiates from conventional methods in that
the contact self-energy matrices are constructed on smaller building blocks,
principal layers (PL), whi... | 2012.14903v1 |
2020-12-30 | Anomalous thermal transport and violation of Wiedemann-Franz law in the critical regime of a charge density wave transition | ErTe$_3$ is studied as a model system to explore thermal transport in a
layered charge density wave (CDW) material. We present data from thermal
diffusivity, resistivity, and specific heat measurements: There is a sharp
decrease in thermal conductivity both parallel and perpendicular to the primary
CDW at the CDW trans... | 2012.15048v1 |
2021-02-05 | A Colossal Electroresistance response, accompanied by metal-insulator transition, in a mixed-valent vanadate | Colossal electroresistance (CER) in manganites, i.e., a large change in
electrical resistance under the influence of either an applied electric field
or an applied electric current, has often been described as complimentary to
the colossal magnetoresistance (CMR) effect. Mixed valent vanadates with active
t2g and empty... | 2102.03128v1 |
2021-02-02 | Fabrication of astronomical x-ray reflection gratings using thermally activated selective topography equilibration | Thermally activated selective topography equilibration (TASTE) enables the
creation of 3D structures in resist using grayscale electron-beam lithography
followed by a thermal treatment to induce a selective polymer reflow. A blazed
grating topography can be created by reflowing repeating staircase patterns in
resist in... | 2102.12359v1 |
2021-03-04 | Uncovering Thermal and Electrical Properties of Sb2Te3/GeTe Superlattice Films | Superlattice-like phase change memory (SL-PCM) promises lower switching
current than conventional PCM based on Ge2Sb2Te5 (GST). However, a fundamental
understanding of SL-PCM requires detailed characterization of the interfaces
within such a SL. Here, we explore the electrical and thermal transport of SLs
with deposite... | 2103.02867v3 |
2021-04-01 | Unconventional satellite resistance peaks in moiré superlattice of h-BN/ AB-stacked tetralayer-graphene heterostructure | Most studies on moir\'e superlattices formed from a stack of h-BN and
graphene have focused on single layer graphene; graphene with multiple layers
is less understood. Here, we show that a moir\'e superlattice of multilayer
graphene shows new features arising from the anisotropic Fermi surface affected
by the superlatt... | 2104.00261v1 |
2021-07-07 | Structural and WAL analysis of Topological single-crystal SnSb2Te4 | Here, we report successful single crystal growth of SnSb2Te4 using the
self-flux method. Unidirectional crystal growth is confirmed through X Ray
Diffraction (XRD) pattern taken on mechanically cleaved crystal flake while the
rietveld refined Powder XRD (PXRD) pattern confirms the phase purity of the
grown crystal. Sca... | 2107.03014v1 |
2021-07-13 | First-principles study of the crystal structure, electronic structure, and transport properties of NiTe$_2$ under pressure | Recent experiments showed the distinct observations on the transition metal
ditelluride NiTe$_2$ under pressure: one reported a superconducting phase
transition at 12 GPa, whereas another observed a sign reversal of Hall
resistivity at 16 GPa without the appearance of superconductivity. To clarify
the controversial exp... | 2107.05922v1 |
2021-07-14 | A fast-converging scheme for the Phonon Boltzmann equation with dual relaxation times | Callaway's dual relaxation times model, which takes into account the normal
and resistive scatterings of phonon, is used to describe the heat conduction in
materials like graphene. For steady-state problems, the Callaway model is
usually solved by the conventional iterative scheme (CIS), which is efficient
in the balli... | 2107.06688v1 |
2021-07-26 | Statistical analysis of spin switching in coupled spin-crossover molecules | We study the switching behavior of two spin-crossover molecules residing in a
nanojunction device consisting of two closely spaced gold electrodes. The spin
states are monitored through a real-time measurement of the resistance of the
junction. A statistical analysis of the resistance values, the occupation
probabiliti... | 2107.11935v1 |
2021-09-29 | Physical and one-dimensional properties of single crystalline La$_{5}$AgPb$_{3}$ | We report here the properties of single crystals of La$_{5}$AgPb$_{3}$, which
is a member of the $R_5MX_3$ ($R$ = rare earth, $M$ = transition metal or main
group element, $X$ = Pb, Sn, Sb, In, Bi) family of chain-like compounds.
Measurements of the electrical resistivity, specific heat and magnetic
susceptibility are ... | 2109.14716v1 |
2021-10-20 | Anomalous Hall effect from gapped nodal line in Co2FeGe Heusler compound | Full Heusler compounds with Cobalt as a primary element show anomalous
transport properties owing to the Weyl fermions and broken time-reversal
symmetry. We present here the study of anomalous Hall effect (AHE) in Co2FeGe
Heusler compound. The experiment reveals anomalous Hall conductivity (AHC) 100
S/cm at room temper... | 2110.10677v1 |
2021-11-06 | GdV6Sn6: a Multi-carrier Metal with Non-magnetic 3d-electron Kagome Bands and 4f-electron Magnetism | Electronic properties of the single crystal of GdV6Sn6, where non-magnetic
V-kagome layers are separated by magnetic Gd-triangular lattice, are
investigated. GdV6Sn6 exhibits unique magnetotransport properties at
low-temperature such as non-linear Hall resistivity and increase of resistance
R in magnetic field H as R ~... | 2111.03806v1 |
2021-11-14 | Modelling photothermal induced resonance microscopy: the role of interface thermal resistances | Infrared (IR) nanospectroscopy by photothermal induced resonance (PTIR) is a
novel experimental technique that combines the nanoscale resolution granted by
atomic force microscopy (AFM) and the chemical labelling made possible by IR
absorption spectroscopy. While the technique has developed enormously over the
last dec... | 2111.07303v1 |
2021-12-01 | Immobilization of the rare earth fraction in lanthanide phosphates LnPO4. Radiation and hydrolytic resistance of the matrix | Radiation and hydrolytic resistance of
Eu0.054Gd0.014Y0.05La0.111Ce0.2515Pr0.094Nd0.3665Sm0.059PO4 with monazite
structure has been studied. The powders were obtained by deposition from
solutions. Ceramic specimens with relative density ~97% were obtained by Spark
Plasma Sintering (heating rate Vh = 50 {\deg}C/min, sin... | 2112.00844v1 |
2021-12-24 | Measured potential profile in a quantum anomalous Hall system suggests bulk-dominated current flow | Ideally, quantum anomalous Hall systems should display zero longitudinal
resistance. Yet in experimental quantum anomalous Hall systems elevated
temperature can make the longitudinal resistance finite, indicating dissipative
flow of electrons. Here, we show that the measured potentials at multiple
locations within a de... | 2112.13123v3 |
2022-01-24 | Nonconventional Quantized Hall Resistances Obtained with $ν= 2$ Equilibration in Epitaxial Graphene $p-n$ Junctions | We have demonstrated the millimeter-scale fabrication of monolayer epitaxial
graphene $p-n$ junction devices using simple ultraviolet photolithography,
thereby significantly reducing device processing time compared to that of
electron beam lithography typically used for obtaining sharp junctions. This
work presents mea... | 2201.09791v1 |
2022-03-11 | Toward accurate polarization estimation in nanoscopic systems | The nanoscopic characterization of ferroelectric thin films is crucial from
their device application point of view. Standard characterization techniques
are based on detecting the nanoscopic charge compensation current (switching
current) caused by the polarization reversal in the ferroelectric. Owing to
various surfac... | 2203.06157v1 |
2022-05-11 | Self-heating Effect in Silicon-Photomultipliers | The main effect of radiation damage in a Silicon-Photolumtiplier (SiPM) is a
dramatic increase in the dark current. The power dissipated, if not properly
cooled, heats the SiPM, whose performance parameters depend on temperature.
Heating studies were performed with a KETEK SiPM, glued on an Al$_2$O$_3$
substrate, which... | 2205.05504v2 |
2022-05-31 | A Novel Readout Scheme for Muon Tomography Application in Material Identification | This work reports a cost-effective, multi-parameter readout and
data-acquisition system for a muon scattering tomography system based on
Resistive Plate Chambers (RPCs). Initial test measurements with a prototype
Resistive Plate Chamber were performed using a low-cost FPGA coupled to the
NINO ASIC for the event selecti... | 2205.15966v1 |
2022-06-04 | How to recognize the universal aspects of Mott criticality? | In this paper we critically discuss several examples of two-dimensional
electronic systems displaying interaction-driven metal-insulator transitions of
the Mott (or Wigner--Mott) type, including dilute two-dimension electron gases
(2DEG) in semiconductors, Mott organic materials, as well as the recently
discovered tran... | 2206.02055v2 |
2022-06-28 | Negative Differential Resistance in Spin-Crossover Molecular Devices | We demonstrate, based on low-temperature scanning tunneling microscopy (STM)
and spectroscopy, a pronounced negative differential resistance (NDR) in
spin-crossover (SCO) molecular devices, where a Fe$^{\text{II}}$ SCO molecule
is deposited on surfaces. The STM measurements reveal that the NDR is robust
with respect to... | 2206.13767v2 |
2022-07-26 | Understanding the Mechanism of the Performance Improvement in Nitrogen-doped Niobium Superconducting Radio Frequency Cavity | Niobium superconducting radiofrequency cavities enable applications in modern
accelerators and quantum computers. However, the surface resistance
significantly deteriorates the cavities performance. Nitrogen doping surface
treatment can consistently increase cavity performance by reducing surface
resistance, but the im... | 2207.13171v1 |
2022-08-31 | Possible origin of extremely large magnetoresistance in the topological insulator CaBi2 single crystal | CaBi2 has been experimentally found to be a superconductor with a transition
temperature of 2 K and identified as a topological insulator via spin- and
angle-resolved photoemission spectroscopy, which makes it a possible platform
to study the interplay between superconductivity and topology. But the detailed
transport ... | 2208.14595v1 |
2022-09-16 | Ferroelectricity and resistive switching in BaTiO$_3$ thin films with liquid electrolyte top contact for bioelectronic devices | We investigate ferroelectric- and resistive switching behavior in 18-nm-thick
epitaxial BaTiO$_3$ (BTO) films in a model
electrolyte-ferroelectric-semiconductor (EFS) configuration. The system is
explored for its potential as a ferroelectric microelectrode in bioelectronics.
The BTO films are grown by pulsed laser depo... | 2209.08020v1 |
2022-09-21 | Colossal Spontaneous Hall Effect and Emergent Magnetism in KTaO$_3$ Two-Dimensional Electron Gases | There has been intense recent interest in the two-dimensional electron gases
(2DEGs) that form at the surfaces and interfaces of KTaO$_3$ (KTO), with the
discovery of superconductivity at temperatures significantly higher than those
of similar 2DEGs based on SrTiO$_3$ (STO). Here we demonstrate that KTO 2DEGs
fabricate... | 2209.10534v2 |
2022-09-30 | Remote Surface Optical Phonon Scattering in Ferroelectric Ba$_{0.6}$Sr$_{0.4}$TiO$_{3}$ Gated Graphene | We report the effect of remote surface optical (RSO) phonon scattering on
carrier mobility in monolayer graphene gated by ferroelectric oxide. We
fabricate monolayer graphene transistors back-gated by epitaxial (001)
Ba$_{0.6}$Sr$_{0.4}$TiO$_{3}$ films, with field effect mobility up to 23,000
cm$^{2}$V$^{-1}$s$^{-1}$ a... | 2209.15527v1 |
2022-10-06 | Kinetically Decoupled Electrical and Structural Phase Transitions in VO2 | Vanadium dioxide (VO2) has drawn significant attention for its near room
temperature insulator to metal transition and associated structural phase
transition. The underlying Physics behind the temperature induced insulator to
metal and concomitant structural phase transition in VO2 is yet to be fully
understood. We hav... | 2210.02691v1 |
2022-11-06 | Triclinic BiFeO3: A room-temperature multiferroic phase with enhanced magnetism and resistivity | The magnetic and transport properties of BiFeO3/La2NiMnO6 (BFO/LNMO)
composite have been investigated both experimentally and theoretically. Unlike
the normal rhombohedral (R3c) phase, BFO in the composites is crystallized in
the triclinic phase (P1). Interestingly, the composites demonstrate a
significant enhancement ... | 2211.03123v3 |
2022-11-11 | Synthesis and physical properties of uranium thin-film hydrides UH2 and \b{eta}-UH3 | Formation of thin uranium hydrides films, UH2 and \b{eta}-UH3, synthesized by
a reactive dc sputtering of uranium metal, was explored using variable
deposition conditions. Obtained stable oxygen-free hydride films were studied
by a variety of methods, both in situ (photoelectron spectroscopy - XPS), and
ex-situ (x-ray ... | 2211.06144v1 |
2023-01-03 | Supercurrent in Bi$_4$Te$_3$ Topological Material-Based Three-Terminal Junctions | In an in-situ prepared three-terminal Josephson junction based on the
topological insulator Bi$_4$Te$_3$ and the superconductor Nb the transport
properties are studied. The differential resistance maps as a function of two
bias currents reveal extended areas of Josephson supercurrent including
coupling effects between ... | 2301.01115v1 |
2023-01-06 | Berry curvature induced valley Hall effect in non-encapsulated hBN/Bilayer graphene heterostructure aligned with near-zero twist angle | Valley Hall effect has been observed in asymmetric single-layer and bilayer
graphene systems. In single-layer graphene systems, asymmetry is introduced by
aligning graphene with hexagonal boron nitride (hBN) with a near-zero twist
angle, breaking the sub-lattice symmetry. Although a similar approach has been
used in bi... | 2301.02358v2 |
2023-01-29 | Anisotropic magnetic and magnetotransport properties in morphologically distinct Nd0.6Sr0.4MnO3 thin films | We investigate the magnetic and magnetotransport properties of nanostructured
Nd0.6Sr0.4MnO3 (NSMO) thin films grown on (100) oriented SrTiO3 (STO)
substrates. The thin films fabricated using the pulsed laser deposition
technique have been found to possess two distinct surface morphologies:
granular and nano rod type. ... | 2301.12406v1 |
2023-02-10 | Electrical characterization of the azimuthal anisotropy of $(\mathrm{Ni}_x\mathrm{Co}_{1-x})\mathrm{B}$-based ferromagnetic nanotubes | We report on the structural, electric and magnetic properties of
$(\mathrm{Ni}_x\mathrm{Co}_{1-x})\mathrm{B}$ ferromagnetic nanotubes,
displaying azimuthal magnetization. The tubes are fabricated using electroless
plating in polycarbonate porous templates, with lengths several tens of
micrometers, diameters from 100nm ... | 2302.05246v1 |
2023-02-14 | Microscopic mechanism of tunable thermal conductivity in carbon nanotube-geopolymer nanocomposites | Geopolymer has been considered as a green and low-carbon material with great
potential application due to its simple synthesis process, environmental
protection, excellent mechanical properties, good chemical resistance and
durability. In this work, the molecular dynamics simulation is employed to
investigate the effec... | 2302.07195v1 |
2023-02-18 | Fractional Marcus-Hush-Chidsey-Yakopcic current-voltage model for redox-based resistive memory devices | We propose a circuit-level model combining the Marcus-Hush-Chidsey electron
current equation and the Yakopcic equation for the state variable for
describing resistive switching memory devices of the structure metal-ionic
conductor-metal. We extend the dynamics of the state variable originally
described by a first-order... | 2302.09407v2 |
2023-03-01 | Electronic Transport Studies of Ag-doped Bi2Se3 Topological Insulator | The structural, magnetotransport, and angle-resolved photoemission
spectroscopy (ARPES) of Ag-doped Bi2Se3 single crystals are presented.
Temperature dependent resistivity exhibits metallic behavior with a slope
change above 200 K for Ag-doped Bi2Se3. The magnetoresistance shows positive
quadratic dependence at low fie... | 2303.00296v1 |
2023-02-21 | Electronic Transport in the Silicon Carbide Semiconductor in Phase 3C | In this work we study, theoretically, electronic mobility of the silicon
carbide semiconductor in the 3C phase, named 3C-SiC. 3C-SiC has shown great
potential for applications in extreme conditions. Thus, the study of the
electronic mobility of this semiconductor is of great interest. In this work
were theoretically de... | 2303.09457v1 |
2023-03-19 | The fluidic memristor: collective phenomena in elastohydrodynamic networks | Fluid flow networks are ubiquitous and can be found in a broad range of
contexts, from human-made systems such as water supply networks to living
systems like animal and plant vasculature. In many cases, the elements forming
these networks exhibit a highly non-linear pressure-flow relationship. Although
we understand h... | 2303.10777v1 |
2023-03-20 | Engineering Higher-Order Dirac and Weyl Semimetallic phase in 3D Topolectrical Circuits | We propose a 3D topolectrical (TE) network that can be tuned to realize
various higher-order topological gapless and chiral phases. We first study a
higher-order Dirac semimetal phase that exhibits a hinge-like Fermi arc linking
the Dirac points. This circuit can be extended to host highly tunable first-
and second-ord... | 2303.10911v2 |
2023-03-20 | Electronic and magnetic properties of Lu and LuH$_2$ | Clarifying the electronic and magnetic properties of lutetium, lutetium
dihydride, and lutetium oxide is very helpful to understand the emergent
phenomena in lutetium-based compounds (such as room-temperature
superconductivity). However, this kind of study is still scarce at present.
Here, we report on the electronic a... | 2303.11063v2 |
2023-04-22 | A Deep Neural Network Deployment Based on Resistive Memory Accelerator Simulation | The objective of this study is to illustrate the process of training a Deep
Neural Network (DNN) within a Resistive RAM (ReRAM) Crossbar-based simulation
environment using CrossSim, an Application Programming Interface (API)
developed for this purpose. The CrossSim API is designed to simulate neural
networks while taki... | 2304.11337v1 |
2023-05-16 | The kinetic theory of ultra-subsonic fermion systems and applications to flat band magic angle twisted bilayer graphene | The only kinematically-allowed phonon-scattering events for bands of subsonic
fermions ($v_F < v_p$) are interband transitions, leading to different low-$T$
transport physics than in the typical supersonic case. We apply a kinetic
theory of phonon-limited transport to a generic two-band system of subsonic
fermions, der... | 2305.09120v1 |
2023-05-31 | Supercurrent through a single transverse mode in nanowire Josephson junctions | Hybrid superconductor-semiconductor materials are fueling research in
mesoscopic physics and quantum technology. Recently demonstrated smooth
$\beta$-Sn superconductor shells, due to the increased induced gap, are
expanding the available parameter space to new regimes. Fabricated on
quasiballistic InSb nanowires, with ... | 2306.00146v1 |
2023-06-26 | Origin of magnetic ordering in half-Heusler RuMnGa | The half-Heusler alloy RuMnGa having valence electron count (VEC) 18 has
recently been theoretically proposed to exhibit compensated ferrimagnetic
(CFiM) character instead of the expected nonmagnetic ground state. On the other
hand, a preliminary experimental study proposed ferromagnetic (FM) ordering. As
no half-Heusl... | 2306.14836v1 |
2023-07-02 | Giant coercivity, resistivity upturn, and anomalous Hall effect in ferrimagnetic FeTb | Despite the blooming interest, the transition-metal rare-earth ferrimagnets
have not been comprehensively understood in terms of their coercivity and
transport properties. Here, we report a systematic study of the magnetic and
transport properties of ferrimagnetic FeTb alloy by varying the layer thickness
and temperatu... | 2307.00475v1 |
2023-07-19 | Observation of large intrinsic anomalous Hall conductivity in polycrystalline Mn$_3$Sn films | We report the observation of anomalous Hall effect in Mn$_3$Sn
polycrystalline thin films deposited on Pt coated Al$_2$O$_3$ substrate with a
large anomalous Hall conductivity of 65($\Omega$cm)$^{-1}$ at 3K. The Hall and
magnetic measurements show a very small hysteresis owing to a weak
ferromagnetic moment in this mat... | 2307.09808v1 |
2023-10-27 | A diamond anvil microassembly for Joule heating and electrical measurements up to 150 GPa and 4000 K | When diamond anvil cell (DAC) sample chambers are outfitted with both thermal
insulation and electrodes, two cutting-edge experimental methods are enabled:
Joule heating with spectroradiometric temperature measurement, and electrical
resistance measurements of samples heated to thousands of kelvin. The accuracy
of temp... | 2310.18176v1 |
2023-11-02 | Disentangling transport mechanisms in a correlated oxide by photoinduced charge injection | We present a novel heterostructured approach to disentangle the mechanism of
electrical transport of the strongly correlated PrNiO3, by placing the
nickelate under the photoconductor CdS. This enables the injection of carriers
into PrNiO3 in a controlled way, which can be used to interrogate its intrinsic
transport mec... | 2311.00904v1 |
2023-11-13 | Metallic conductivity on Na-deficient structural domain walls in the spin-orbit Mott insulator Na$_2$IrO$_3$ | Honeycomb Na$_2$IrO$_3$ is a prototype spin-orbit Mott insulator and Kitaev
magnet. We report a combined structural and electrical resistivity study of
Na$_2$IrO$_3$ single crystals. Laue back-scattering diffraction indicates
twinning with $\pm 120^\circ$ rotation around the $c^*$-axis while scanning
electron microscop... | 2311.07275v1 |
2023-11-30 | Electrical resistance associated with the scattering of optically oriented electrons in n-GaAs | In a bulk GaAs crystal, an unusual magnetoresistance effect, which takes
place when a spin-polarized current flows through the sample, was detected.
Under conditions of optical pumping of electron spins, an external magnetic
field directed along the electric current and perpendicular to the oriented
spins decreases the... | 2311.18713v1 |
2023-12-01 | Comparative study of Kondo effect in Vanadium dichalcogenides VX$_2$ (X=Se & Te) | We report on the electrical transport, magnetotransport, and magnetic
properties studies on the transition metal dichalcogenides VSe$_2$ and VTe$_2$
and draw a comprehensive comparison between them. We observe Kondo effect in
both systems induced by the exchange interaction between localized moments and
conduction elec... | 2312.09258v1 |
2023-12-28 | Memristive behavior of functionalized graphene quantum dot and polyaniline nanocomposites | Zero-dimensional graphene quantum dots (GQD) dispersed in conducting polymer
matrix display a striking range of optical, mechanical, and thermoelectric
properties which can be utilized to design next-generation sensors and low-cost
thermoelectric. This exotic electrical property in GQDs is achieved by
exploiting the co... | 2312.16759v1 |
2024-01-04 | Anomalous upper critical field in the quasicrystal superconductor Ta$_{1.6}$Te | Superconductivity in quasicrystals poses a new challenge in condensed matter
physics. We measured the resistance and ac magnetic susceptibility of a
Ta$_{1.6}$Te dodecagonal quasicrystal, which is superconducting below $T_c
\sim$ 1 K. We show that the upper critical field increases linearly with a
large slope of $-$4.4... | 2401.02079v1 |
2024-01-07 | Advancing Noise-Resilient Twist Angle Characterization in Bilayer Graphene through Raman Spectroscopy via GAN-CNN Modeling | In this study, we introduce an innovative methodology for robust twist angle
identification in bilayer graphene using Raman spectroscopy, featuring the
integration of generative adversarial network and convolutional neural network
(GAN-CNN). Our proposed approach showcases remarkable resistance to noise
interference, p... | 2401.03371v1 |
2024-01-10 | Superconductivity in Ternary Zirconium Telluride Zr6MTe2 with 3d Transition Metals | We report the synthesis, electronic properties, and electronic states of
Zr6MTe2 (M = Cr, Mn, Fe, and Co), which is isostructural to a recently
discovered superconductor family Sc6MTe2. Based on the electrical resistivity
and heat capacity data measured at low temperatures, Zr6FeTe2 is found to show
bulk superconductiv... | 2401.04870v1 |
2024-01-25 | Non-zero crossing current-voltage characteristics of interface-type resistive switching devices | A number of memristive devices, mainly ReRAMs, have been reported to exhibit
a unique non-zero crossing hysteresis attributed to the interplay of resistive
and not yet fully understood `capacitive', and `inductive' effects. This work
exploits a kinetic simulation model based on the stochastic cloud-in-a-cell
method to ... | 2401.14507v1 |
2024-01-27 | Electronic structure and physical properties of candidate topological material GdAgGe | We grew needle-shaped single crystals of GdAgGe, which crystallizes in a
noncentrosymmetric hexagonal crystal structure with space group
P$\overline{6}$2$m$ (189). The magnetic susceptibility data for $H \perp c$
reveal two pronounced antiferromagnetic transitions at $T_{N1}$ = 20 K and
$T_{N2}$ = 14.5 K. The magnetic ... | 2401.15464v1 |
2024-02-29 | First-principles electron-phonon interactions and electronic transport in large-angle twisted bilayer graphene | Twisted bilayer graphene (tBLG) has emerged as an exciting platform for novel
condensed matter physics. However, electron-phonon ($e$-ph) interactions in
tBLG and their effects on electronic transport are not completely understood.
Here we show first-principles calculations of $e$-ph interactions and
resistivity in com... | 2402.19453v1 |
2024-03-04 | Tuning charge density wave of kagome metal ScV6Sn6 | Compounds with a kagome lattice exhibit intriguing properties and the charge
density wave (CDW) adds an additional layer of interest to research on them. In
this study, we investigate the temperature and magnetic field dependent
electrical properties under a chemical substitution and hydrostatic pressure of
ScV6Sn6, a ... | 2403.02463v1 |
2024-03-05 | A Reduced-Order Resistive Force Model for Robotic Foot-Mud Interactions | Legged robots are well-suited for broad exploration tasks in complex
environments with yielding terrain. Understanding robotic foot-terrain
interactions is critical for safe locomotion and walking efficiency for legged
robots. This paper presents a reduced-order resistive-force model for
robotic-foot/mud interactions. ... | 2403.02617v1 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.