publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
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2015-07-01 | Gas Sensing with h-BN Capped MoS2 Heterostructure Thin Film Transistors | We have demonstrated selective gas sensing with molybdenum disulfide (MoS2)
thin films transistors capped with a thin layer of hexagonal boron nitride
(h-BN). The resistance change was used as a sensing parameter to detect
chemical vapors such as ethanol, acetonitrile, toluene, chloroform and
methanol. It was found tha... | 1507.00308v1 |
2016-09-13 | Gate voltage control of the $AlO_x$/$SrTiO_3$ interface electrical properties | Electron-beam deposition of an insulating granular aluminium or of an
off-stoichiometric amorphous alumina layer on a $SrTiO_3$ surface is a simple
way to get a metallic interface from insulating materials. No heating nor
specific preparation of the $SrTiO_3$ surface are needed. In this paper, we
investigate how the el... | 1609.03718v1 |
2018-07-04 | Thermal and transport properties of U3Si2 | We have studied U_3Si_2 by means of the heat capacity, electrical
resistivity, Seebeck and Hall effects, and thermal conductivity in the
temperature range 2-300 K and in magnetic fields up to 9 T. All the results
obtained point to delocalized nature of 5f-electrons in this material. The low
temperature heat capacity is... | 1807.01757v1 |
2018-07-13 | Laser-beam patterned topological insulating states on thin semiconducting MoS2 | Identifying the two-dimensional (2D) topological insulating (TI) state in new
materials and its control are crucial aspects towards the development of
voltage-controlled spintronic devices with low power dissipation. Members of
the 2D transition metal dichalcogenides (TMDCs) have been recently predicted
and experimenta... | 1807.04914v3 |
2018-07-17 | Electric Field Driven Memristive Behavior at the Schottky Interface of Nb doped SrTiO3 | Computing inspired by the human brain requires a massive parallel
architecture of low-power consuming elements of which the internal state can be
changed. SrTiO3 is a complex oxide that offers rich electronic properties; here
Schottky contacts on Nb-doped SrTiO3 are demonstrated as memristive elements
for neuromorphic ... | 1807.06274v1 |
2019-01-07 | Non-topological Origin of the Planar Hall Effect in Type-II Dirac Semimetal NiTe2 | Dirac and Weyl semimetals are new discovered topological nontrivial materials
with the linear band dispersions around the Dirac/Weyl points. When applying
non-orthogonal electric current and magnetic field, an exotic phenomenon called
chiral anomaly arises and negative longitudinal resistance can be detected.
Recently,... | 1901.01749v1 |
2019-10-19 | Investigation of structural, electrical and electrochemical properties of La0.6Sr0.4Fe0.8Mn0.2O3-δ as an intermediate temperature solid oxide fuel cell cathode | La0.6Sr0.4Fe0.8Mn0.2O3 (LSFM) compound is synthesized by Sol-gel method and
evaluated as a cathode material for the intermediate temperature solid oxide
fuel cell (IT-SOFC). X-ray diffraction (XRD) indicates that the LSFM has a
Rhombohedral structure with R-3c space group symmetry. The XRD patterns reveal
very small am... | 1910.08754v1 |
2019-10-21 | Role of crystal lattice structure in predicting fracture toughness | We examine the atomistic scale dependence of material's resistance-to-failure
by numerical simulations and analytical analysis in electrical analogs of
brittle crystals. We show that fracture toughness depends on the lattice
geometry in a way incompatible with Griffith's relationship between fracture
and free surface e... | 1910.09343v2 |
2019-10-25 | Macroscopic visualization of fast electrochemical reaction of SrCoOx oxygen sponge | Strontium cobaltite (SrCoOx) is known as a material showing fast topotactic
electrochemical Redox reaction so-called oxygen sponge. Although atomic scale
phenomenon of the oxidation of SrCoO2.5 into SrCoO3 is known, the macroscopic
phenomenon has not been clarified yet thus far. Here, we visualize the
electrochemical o... | 1910.11465v1 |
2019-10-29 | Improvement on corrosion resistance and biocompability of ZK60 magnesium alloy by carboxyl ion implantation | Magnesium alloys have been considered to be potential biocompatible metallic
materials. Further improvement on the anti-corrosion is expected to make this
type of materials more suitable for biomedical applications in the fields of
orthopedics, cardiovascular surgery and others. In this paper, we introduce a
method of ... | 1910.13219v1 |
2019-11-21 | Superconducting Contact and Quantum Interference Between Two-Dimensional van der Waals and Three-Dimensional Conventional Superconductors | Two-dimensional (2D) transition-metal dichalcogenide superconductors have
unique and desirable properties for integration with conventional
superconducting circuits. However, fully superconducting contact must be made
between the 2D material and three-dimensional (3D) superconductors in order to
employ the standard mic... | 1911.09711v2 |
2020-01-07 | Electrical transport properties of bulk tetragonal CuMnAs | Temperature-dependent resistivity and magnetoresistance are measured in bulk
tetragonal phase of antiferromagnetic CuMnAs and the latter is found to be
anisotropic both due to structure and magnetic order. We compare these findings
to model calculations with chemical disorder and finite-temperature phenomena
included. ... | 2001.01947v3 |
2020-01-18 | Microscopic aspects of artificial ageing in Al-Mg-Si alloys | Al-Mg-Si alloys with total solute contents ranging from 0.8 to 1.4 wt.% were
solutionised, quenched and then artificially aged (AA) at 180 {\deg}C, after
which positron annihilation lifetime spectroscopy was applied to obtain
information about precipitation and vacancy evolution during preceding ageing.
Hardness and el... | 2001.06566v1 |
2020-01-27 | Metal to insulator transition, colossal Seebeck coefficient and ultralow thermal conductivity in solution-processed monodispersed nickel nanoparticles | We report here metal to insulator transition, colossal Seebeck coefficient
and ultralow thermal conductivity (0.0057th of its bulk value, significantly
smaller than many well-known thermoelectric materials and silicon, showing
potential applications in thermoelectrics, electronics and photonics for heat
dissipation) in... | 2001.09708v1 |
2020-05-21 | Thermodynamic Origin of Reaction Non-Uniformity in Battery Porous Electrodes and its Mitigation | The development of non-uniform reaction current distribution within porous
electrodes is a ubiquitous phenomenon during battery charging / discharging and
frequently controls the rate performance of battery cells. Reaction
inhomogeneity in porous electrodes is usually attributed to the kinetic
limitation of mass transp... | 2005.10916v1 |
2020-06-16 | Ambient pressure Dirac electron system in quasi-two-dimensional molecular conductor $α$-(BETS)$_2$I$_3$ | We investigated the precise crystal structures and electronic states in a
quasi-two-dimensional molecular conductor ${\alpha}$-(BETS)$_2$I$_3$ at ambient
pressure. The electronic resistivity of this molecular solid shows
metal-to-insulator (MI) crossover at $T_{MI}$=50 K. Our x-ray diffraction and
$^{13}$C nuclear magn... | 2006.08978v2 |
2020-06-18 | Dynamical vortex phase diagram of 2D superconductivity in gated MoS2 | Recent discoveries of two-dimensional (2D) superconductors have uncovered
various new aspects of physical properties including vortex matter. In this
paper, we report transport properties and a dynamical phase diagram at zero
magnetic field in ion-gated MoS2. In addition to the universal jump in the
current-voltage cha... | 2006.10749v1 |
2020-07-03 | From Weak Antilocalization to Kondo Scattering in a Magnetic Complex Oxide Interface | Quantum corrections to electrical resistance can serve as sensitive probes of
the magnetic landscape of a material. For example, interference between
time-reversed electron paths gives rise to weak localization effects, which can
provide information about the coupling between spins and orbital motion, while
the Kondo e... | 2007.01853v1 |
2020-08-02 | Thermal stability for domain wall mediated magnetization reversal in perpendicular STT MRAM cells with W insertion layers | We present an analytical model for calculating energy barrier for the
magnetic field-driven domain wall-mediated magnetization reversal of a
magneto-resistive random access memory (MRAM) cell and apply it to study
thermal stability factor $\Delta$ for various thicknesses of W layers inserted
into the free layer (FL) as... | 2008.00412v2 |
2020-08-03 | Intrinsic mechanism for anisotropic magnetoresistance and experimental confirmation in Co$_x$Fe$_{1-x}$ single-crystal films | Using first-principles transport calculations, we predict that the
anisotropic magnetoresistance (AMR) of single-crystal Co$_x$Fe$_{1-x}$ alloys
is strongly dependent on the current orientation and alloy concentration. An
intrinsic mechanism for AMR is found to arise from the band crossing due to
magnetization-dependen... | 2008.00872v1 |
2020-08-12 | Analysis of the influence of microstructural traps on hydrogen assisted fatigue | We investigate the influence of microstructural traps on hydrogen diffusion
and embrittlement in the presence of cyclic loads. A mechanistic, multi-trap
model for hydrogen transport is developed, implemented into a finite element
framework, and used to capture the variation of crack tip lattice and trapped
hydrogen con... | 2008.05452v1 |
2020-08-18 | Preparation of Isotopically enriched $^{112,116,120,124}$Sn targets at VECC | Resistive heating and mechanical rolling methods have been employed to
prepare isotopically enriched thin target foils of 116Sn (~380 \mu g/cm2),
124Sn(~400 \mu g/cm2) and thicker foils of 112Sn (1.7 mg/cm2),120Sn (1.6
mg/cm2),respectively. Preparation of enriched targets with small amount of
material, selection of rel... | 2008.08081v2 |
2020-08-20 | Polarization amplification by spin-doping in nanomagnetic/graphene hybrid systems | The generation of non-equilibrium electron spin polarization, spin transport,
and spin detection are fundamental in many quantum devices. We demonstrate that
a lattice of magnetic nanodots enhances the electron spin polarization in
monolayer graphene via carrier exchange. We probed the spin polarization
through a resis... | 2008.08813v2 |
2020-08-21 | Fate of a soliton matter upon symmetry-breaking ferroelectric order | In a one-dimensional (1D) system with degenerate ground states, their domain
boundaries, dubbed solitons, emerge as topological excitations often carrying
unconventional charges and spins; however, the soliton excitations are only
vital in the non-ordered 1D regime. Then a question arises; how do the solitons
conform t... | 2008.09337v1 |
2020-10-09 | Electronic and magnetic properties of $α$-FeGe$_2$ films embedded in vertical spin valve devices | We studied metastable $\alpha$-FeGe$_2$, a novel layered tetragonal material,
embedded as a spacer layer in spin valve structures with ferromagnetic Fe$_3$Si
and Co$_2$FeSi electrodes. For both types of electrodes, spin valve operation
is demonstrated with a metallic transport behavior of the $\alpha$-FeGe$_2$
spacer l... | 2010.04453v2 |
2020-10-16 | Chirality induced Giant Unidirectional Magnetoresistance in Twisted Bilayer Graphene | Twisted bilayer graphene (TBG) exhibits fascinating correlation-driven
phenomena like the superconductivity and Mott insulating state, with flat bands
and a chiral lattice structure. We find by quantum transport calculations that
the chirality leads to a giant unidirectional magnetoresistance (UMR) in TBG,
where the un... | 2010.08385v2 |
2020-11-11 | Electron doping of the iron-arsenide superconductor CeFeAsO controlled by hydrostatic pressure | In the iron-pnictide material CeFeAsO not only the Fe moments, but also the
local 4f moments of the Ce order antiferromagnetically at low temperatures. We
elucidate on the peculiar role of the Ce on the emergence of superconductivity.
While application of pressure suppresses the iron SDW ordering temperature
monotonous... | 2011.05665v1 |
2020-11-17 | Dichotomy Between Orbital and Magnetic Nematic Instabilities in BaFe2S3 | Nematic orders emerge nearly universally in iron-based superconductors, but
elucidating their origins is challenging because of intimate couplings between
orbital and magnetic fluctuations. The iron-based ladder material BaFe2S3,
which superconducts under pressure, exhibits antiferromagnetic order below TN ~
117K and a... | 2011.08600v1 |
2020-11-24 | Evidence of interfacial asymmetric spin scattering at ferromagnet-Pt interfaces | We measure the spin-charge interconversion by the spin Hall effect in
ferromagnetic/Pt nanodevices. The extracted effective spin Hall angles (SHAs)
of Pt evolve drastically with the ferromagnetic (FM) materials (CoFe, Co, and
NiFe), when assuming transparent interfaces and a bulk origin of the spin
injection/detection ... | 2011.12207v2 |
2020-11-25 | Electron hydrodynamics of anomalous Hall materials | We study two-dimensional electron systems in the hydrodynamic regime. We show
that a geometrical Berry curvature modifies the effective Navier-Stokes
equation for viscous electron flow in topological materials. For small electric
fields, the Hall current becomes negligible compared to the viscous
longitudinal current. ... | 2011.12590v1 |
2020-11-29 | Pressure Dependent Electronic Structure in CeRh$_6$Ge$_4$ | Using the state-of-art dynamical mean-field theory combined with density
functional theory method, we have performed systematic study on the temperature
and pressure dependent electronic structure of ferromagnetic quantum critical
material candidate CeRh$_6$Ge$_4$. At -3.9 GPa and -8.3 GPa, the Ce-4$f$
occupation varia... | 2011.14256v1 |
2020-12-16 | Superconductivity in the $\mathbb{Z}_2$ kagome metal KV$_3$Sb$_5$ | Here we report the observation of bulk superconductivity in single crystals
of the two-dimensional kagome metal KV$_3$Sb$_5$. Magnetic susceptibility,
resistivity, and heat capacity measurements reveal superconductivity below $T_c
= 0.93$K, and density functional theory (DFT) calculations further characterize
the norma... | 2012.09097v2 |
2020-12-25 | 3D Printing Autoclavable PPE on Low-Cost Consumer 3D Printers | During the COVID-19 pandemic, medical facilities began using 3D printed PPE
sourced from their own print labs, makerspaces, universities, and individuals
with 3D printers to fill the gaps in supply as traditional manufacturing was
not widely enough distributed nor quick enough to scale to widespread spikes in
demand. H... | 2012.13476v3 |
2021-02-01 | Electronic, magnetic and galvanomagnetic properties of Co-based Heusler alloys: possible states of a half-metallic ferromagnet and spin gapless semiconductor | Parameters of the energy gap and, consequently, electronic, magnetic and
galvanomagnetic properties in different X$_2$YZ Heusler alloys can vary quite
strongly. In particular, half-metallic ferromagnets (HMFs) and spin gapless
semiconductors (SGSs) with almost 100% spin polarization of charge carriers are
promising mat... | 2102.00952v1 |
2021-02-14 | PCM-trace: Scalable Synaptic Eligibility Traces with Resistivity Drift of Phase-Change Materials | Dedicated hardware implementations of spiking neural networks that combine
the advantages of mixed-signal neuromorphic circuits with those of emerging
memory technologies have the potential of enabling ultra-low power pervasive
sensory processing. To endow these systems with additional flexibility and the
ability to le... | 2102.07260v2 |
2021-03-01 | Enhanced Superconductivity in the Se-substituted 1T-PdTe$_2$ | Two-dimensional transition metal dichalcogenide PdTe$_2$ recently attracts
much attention due to its phase coexistence of type-II Dirac semimetal and
type-I superconductivity. Here we report a 67 % enhancement of superconducting
transition temperature in the 1T-PdSeTe in comparison to that of PdTe2 through
partial subs... | 2103.00687v1 |
2021-03-02 | Revealing atomic-scale vacancy-solute interaction in nickel | Imaging individual vacancies in solids and revealing their interactions with
solute atoms remains one of the frontiers in microscopy and microanalysis. Here
we study a creep-deformed binary Ni-2 at.% Ta alloy. Atom probe tomography
reveals a random distribution of Ta. Field ion microscopy, with contrast
interpretation ... | 2103.01639v3 |
2021-03-04 | Strange electrical transport: Colossal magnetoresistance via avoiding fully polarized magnetization in ferrimagnetic insulator Mn3Si2Te6 | Colossal magnetoresistance is of great fundamental and technological
significance and exists mostly in the manganites and a few other materials.
Here we report colossal magnetoresistance that is starkly different from that
in all other materials. The stoichiometric Mn3Si2Te6 is an insulator featuring
a ferrimagnetic tr... | 2103.02764v1 |
2021-03-08 | The Efficacy of the Method of Four Coefficients to Determine Charge Carrier Scattering | The investigation of the electronic properties of semiconductors is
inherently challenging due to the ensemble averaging of fundamentals to
transport measurements (i.e., resistivity, Hall, and Seebeck coefficient
measurements). Here, we investigate the incorporation of a fourth measurement
of electronic transport, the ... | 2103.04569v1 |
2021-03-26 | Electron-electron interactions and weak anti-localization in few-layer ZrTe5 devices | Much effort has been devoted to the electronic properties of relatively thick
ZrTe5 crystals, focusing on their three-dimensional topological effects. Thin
ZrTe5 crystals, on the other hand, were much less explored experimentally. Here
we present detailed magnetotransport studies of few-layer ZrTe5 devices, in
which el... | 2103.14329v1 |
2021-03-31 | Deciphering water-solid reactions during hydrothermal corrosion of SiC | Water solid interfacial reactions are critical to understanding corrosion.
More specifically, it is notoriously difficult to determine how water and solid
interact beyond the initial chemisorption to induce the surface dissolution.
Here, we report atomic-scale mechanisms of the elementary steps during SiC
hydrothermal ... | 2103.16738v1 |
2021-04-14 | Low-Frequency Electronic Noise Spectroscopy of Quasi-2D van der Waals Antiferromagnetic Semiconductors | We investigated low-frequency current fluctuations, i.e. noise, in the
quasi-two-dimensional (2D) van der Waals antiferromagnetic semiconductor FePS3
with the electronic bandgap of 1.5 eV. The electrical and noise characteristics
of the p-type, highly resistive, thin films of FePS3 were measured at different
temperatur... | 2104.06578v1 |
2020-12-26 | The Main Role of Thermal Annealing in Controlling the Structural and Optical Properties of ITO Thin Film Layer | Here we report on studying the electronic and optical material properties of
the technologically-relevant material indium tin oxide (ITO) as a function of
thermal annealing. In this work, ITO powder has been prepared utilizing
solid-state reaction methods. An electron beam gun technology has been used to
prepare a ITO ... | 2104.07464v1 |
2021-04-16 | Circuit-aware Device Modeling of Energy-efficient Monolayer WS$_2$ Trench-FinFETs | The continuous scaling of semiconductor technology has pushed the footprint
of logic devices below 50 nm. Currently, logic standard cells with one single
fin are being investigated to increase the integration density, although such
options could severely limit the performance of individual devices. In this
letter, we p... | 2104.07891v1 |
2021-04-19 | Effect of wear particles and roughness on nanoscale friction | Frictional contacts lead to the formation of a surface layer called the third
body, consisting of wear particles and structures resulting from their
agglomerates. Its behavior and properties at the nanoscale control the
macroscopic tribological performance. It is known that wear particles and
surface topography evolve ... | 2104.09217v3 |
2021-05-01 | Complementary electrochemical ICP-MS flow cell and in-situ AFM study of the anodic desorption of molecular adhesion promotors | Molecular adhesion promoters are a central component of modern coating
systems for the corrosion protection of structural materials. They are
interface active and form ultrathin corrosion inhibiting and adhesion-promoting
layers. Here we utilize thiol-based self-assembled monolayers (SAMs) as model
system for demonstra... | 2105.00280v1 |
2021-05-09 | Planar topological Hall effect in a hexagonal ferromagnetic Fe5Sn3 single crystal | The planar topological Hall effect (PTHE), appeared when the magnetic field
tended to be along the current, is believed to result from the real-space Berry
curvature of the spin spiral structure and has been experimentally observed in
skyrmion-hosting materials. In this paper, we report an experimental
observation of t... | 2105.03898v1 |
2021-06-02 | Charge order dynamics in underdoped La$\mathbf{_{1.6-\textit{x}}}$Nd$\mathbf{_{0.4}}$Sr$\mathbf{_\textit{x}}$CuO$\mathbf{_{4}}$ revealed by electric pulses | The dynamics of the charge-order domains has been investigated in
La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_{4}$, a prototypical stripe-ordered
cuprate, using pulsed current injection. We first identify the regime in which
nonthermal effects dominate over simple Joule heating, and then demonstrate
that, for small enough per... | 2106.01469v1 |
2021-06-09 | The heat equation for nanoconstrictions in 2D materials with Joule self-heating | We consider the heat equation for monolayer two-dimensional materials in the
presence of heat flow into a substrate and Joule heating due to electrical
current. We compare devices including a nanowire of constant width and a bow
tie (or wedge) constriction of varying width, and we derive approximate
one-dimensional hea... | 2106.05129v2 |
2021-07-21 | Bulk superconductivity and Pauli paramagnetism in nearly stoichiometric CuCo$_2$S$_4$ | It has long remained elusive whether CuCo$_{2}$S$_{4}$ thiospinel shows bulk
superconductivity. Here we clarify the issue by studying on the samples of
sulfur-deficient CuCo$_{2}$S$_{3.7}$ and sulfurized CuCo$_{2}$S$_{4}$. The
sample CuCo$_{2}$S$_{3.7}$ has a smaller lattice constant of $a=9.454$ {\AA},
and it is not s... | 2107.09848v1 |
2021-09-16 | Achieving adjustable elasticity with non-affine to affine transition | For various engineering and industrial applications it is desirable to
realize mechanical systems with broadly adjustable elasticity to respond
flexibly to the external environment. Here we discover a topology-correlated
transition between affine and non-affine regimes in elasticity in both two- and
three-dimensional p... | 2109.07789v1 |
2021-09-22 | Roller-Coaster in a Flatland: Magnetoresistivity in Eu-intercalated Graphite | Novel phenomena in magnetically-intercalated graphite has been a subject of
much research, pioneered and promoted by M.~S. and G.~Dresselhaus and many
others in the 1980s. Among the most enigmatic findings of that era was a
dramatic, roller-coaster-like behavior of the magnetoresistivity in EuC$_6$
compound, in which m... | 2109.10916v3 |
2021-10-05 | Experimental study of transport properties of Weyl semimetal LaAlGe thin films grown by molecular beam epitaxy | Rare earth compounds display diverse electronic, magnetic, and
magneto-transport properties. Recently these compounds of the type RAlGe (R =
La, Ce, Pr) have been shown to exhibit Weyl semimetallic behavior. In this
work, we have investigated the crystal structure, electronic, and
magneto-transport properties of the We... | 2110.02322v1 |
2021-11-05 | Externally controlled and switchable 2D electron gas at the Rashba interface between ferroelectrics and heavy $d$ metals | Strong spin-orbit coupling in noncentrosymmetric materials and interfaces
results in remarkable physical phenomena, such as nontrivial spin textures,
which may exhibit Rashba, Dresselhaus, and other intricated configurations.
This provides a promising basis for nonvolatile spintronic devices and further
implications. H... | 2111.03351v2 |
2021-11-12 | Schwarzite and schwarzynes based load-bear resistant radial cellular griding-based 3D printed structures | Nature-occurring structures exhibiting unique topological features such as
complex and gradient porosity has been the basis to create new materials and/or
structures. Most studies have been focused on complex periodic porous
structures but gradient porous ones have not been yet fully investigated for
stable structural ... | 2111.06641v1 |
2021-12-18 | Enhanced Tunnel magnetoresistance in Fe/Mg4Al-Ox/Fe(001) Magnetic Tunnel Junctions | Spinel MgAl2O4 and family oxides are emerging barrier materials useful for
magnetic tunnel junctions (MTJs). We report large tunnel magnetoresistance
(TMR) ratios up to 429% at room temperature (RT) and 1,034% at 10 K in a
Fe/MgAl2O4/Fe(001)-based MTJ prepared using electron-beam evaporation of
Mg4Al-Ox. Resistance osc... | 2112.09910v1 |
2022-01-20 | Spin valve effect in two-dimensional VSe$_2$ system | Vanadium based dichalcogenides, VSe$_2$, are two-dimensional materials in
which magnetic Vanadium atoms are arranged in a hexagonal lattice and are
coupled ferromagnetically within the plane. However, adjacent atomic planes are
coupled antiferromagnetically. This provides new and interesting opportunities
for applicati... | 2201.08420v1 |
2022-03-23 | Dipolar Magnetic Interactions and A-type Antiferromagnetic Order in the Zintl Phase Insulator EuZn2P2 | Zintl phases, containing strongly covalently bonded frameworks with separate
ionically bonded ions, have emerged as a critical materials family in which to
couple magnetism and strong spin-orbit coupling to drive diverse topological
phases of matter. Here we report the single-crystal synthesis, magnetic,
thermodynamic,... | 2203.12739v1 |
2022-04-13 | Modeling crack propagation in heterogeneous materials: Griffith's law, intrinsic crack resistance and avalanches | Various kinds of heterogeneity in solids including atomistic discreteness
affect the fracture strength as well as the failure dynamics remarkably. Here
we study the effects of an initial crack in a discrete model for fracture in
heterogeneous materials, known as the fiber bundle model. We find three
distinct regimes fo... | 2204.06334v1 |
2022-04-21 | Computational Design of Kinesthetic Garments | Kinesthetic garments provide physical feedback on body posture and motion
through tailored distributions of reinforced material. Their ability to
selectively stiffen a garment's response to specific motions makes them
appealing for rehabilitation, sports, robotics, and many other application
fields. However, finding de... | 2204.09996v1 |
2022-04-24 | Large Hall electron mobilities in head-to-head BaTiO$_3$-domain walls | Strongly charged head-to-head (H2H) domain walls (DWs) that are purposely
engineered along the [110] crystallographic orientation into ferroelectric
BaTiO$_3$ single crystals have been proposed as novel 2-dimensional electron
gases (2DEGs) due to their significant domain wall conductivity (DWC). Here, we
quantify these... | 2204.11265v1 |
2022-07-04 | Interdependent Superconducting Networks | Cascades are self-amplifying processes triggered by feedback mechanisms that
may cause a substantial part of a macroscopic system to change its phase in
response of a relatively small local event. The theoretical background for
these phenomena is rich and interdisciplinary with interdependent networks
providing a versa... | 2207.01669v1 |
2022-07-06 | Ferroelastic domain walls in BiFeO$_3$ as memristive networks | Electronic conduction along individual domain walls (DWs) has been reported
in BiFeO$_3$ (BFO) and other nominally insulating ferroelectrics. DWs in these
materials separate regions of differently oriented electrical polarization
(domains) and are just a few atoms wide, providing self-assembled nanometric
conduction pa... | 2207.02688v1 |
2022-07-07 | Asymmetric Ground States in La$_{0.67}$Sr$_{0.33}$MnO$_3$/BaTiO$_3$ heterostructures Induced by Flexoelectric Bending | Misfit strain delivered from single-crystal substrates typically modifies the
ground states of transition metal oxides, generating increasing interests in
designing modern transducers and sensors. Here, we demonstrate that
magnetotransport properties of La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) films were
continuously tuned... | 2207.03297v1 |
2022-07-11 | Thermoelectrics: from Longitudinal to Transverse | In this article, we show fundamentals and recent advances on the transverse
thermoelectric generation, in which a thermopower is generated in the direction
perpendicular to an applied temperature gradient. Transverse thermoelectric
generation is one of the central topics in condensed matter physics, and can be
a breakt... | 2207.05005v1 |
2022-07-13 | Strong Spin-Orbit Torque Induced by the Intrinsic Spin Hall Effect in Cr1-xPtx | We report on a spin-orbit torque study of the spin current generation in
Cr1-xPtx alloy, using the light 3d ferromagnetic Co as the spin current
detector. We find that the dampinglike spin-orbit torque of Cr1-xPtx/Co
bilayers can be enhanced by tuning the Cr concentration in the Cr1-xPtx layer,
with a maximal value of ... | 2207.05992v2 |
2022-09-14 | Revealing the band structure of ZrTe$_5$ using Multicarrier Transport | The layered material ZrTe$_5$ appears to exhibit several exotic behaviors
which resulted in significant interest recently, although the exact properties
are still highly debated. Among these we find a Dirac/Weyl semimetallic
behavior, nontrivial spin textures revealed by low temperature transport, and a
potential weak ... | 2209.06797v2 |
2022-09-29 | Battery Testing Methods in Fuel Cell Research | This report presents some of the key laboratory electrochemical battery
testing methods that are used in fuel cell research. Methods such as
voltammetry, chronoamperometry, chronopotentiometry, and electrochemical
impedance spectroscopy are of major importance. All the electrochemical
corrosion tests are performed thro... | 2209.14541v1 |
2022-10-11 | New Gd-based magnetic compound GdPt$_2$B with a chiral crystal structure | Herein, we report the discovery of a novel Gd-based magnetic compound
GdPt$_2$B with a chiral crystal structure. X-ray diffraction and chemical
composition analyses reveal a CePt$_2$B-type crystal structure (space group:
$P6_422$) for GdPt$_2$B. Moreover, we successfully grew single crystals of
GdPt$_2$B using the Czoc... | 2210.05099v1 |
2022-11-09 | Coexistance of volatile and non-volatile memristive effects in phase-separated La$_{0.5}$Ca$_{0.5}$MnO$_{3}$-based devices | In this work, we have investigated the coexistance of volatile and
non-volatile memristive effects in epitaxial phase-separated
La$_{\text{0.5}}$Ca$_{\text{0.5}}$MnO$_{3}$ thin films. At low temperatures (50
K), we observed volatile resistive changes arising from self-heating effects in
the vicinity of a metal-to-insul... | 2211.04955v1 |
2022-11-11 | Quantum-Hall physics and three dimensions | The discovery of the quantum Hall effect (QHE) in 1980 marked a turning point
in condensed matter physics: given appropriate experimental conditions, the
Hall conductivity {\sigma}_xy of a two-dimensional (2D) electron system is
exactly quantized. But what happens to the QHE in three dimensions (3D)?
Experiments over t... | 2211.06248v1 |
2022-11-25 | Microscopic parameters of the van der Waals CrSBr antiferromagnet from microwave absorption experiments | Microwave absorption experiments employing a phase-sensitive external
resistive detection are performed for a topical van der Waals antiferromagnet
CrSBr. The field dependence of two resonance modes is measured in an applied
field parallel to the three principal crystallographic directions, revealing
anisotropies and m... | 2211.14117v1 |
2022-11-30 | Unification of Nonlinear Anomalous Hall Effect and Nonreciprocal Magnetoresistance in Metals by the Quantum Geometry | The quantum geometry has significant consequences in determining transport
and optical properties in quantum materials. Here, we use a semiclassical
formalism coupled with perturbative corrections unifying the nonlinear
anomalous Hall effect (NLAHE) and nonreciprocal magnetoresistance (NMR,
longitudinal resistance) fro... | 2211.17213v2 |
2022-12-15 | Superconductivity by alloying the topological insulator SnBi2Te4 | Alloying indium into the topological insulator Sn1-xInxBi2Te4 induces bulk
superconductivity with critical temperatures Tc up to 1.85 K and upper critical
fields up to about 14 kOe. This is confirmed by electrical resistivity, heat
capacity, and magnetic susceptibility measurements. The heat capacity shows a
discontinu... | 2212.08125v1 |
2022-12-04 | Multiphase polarization in ion-intercalation nanofilms: general theory including various surface effects and memory applications | Ion concentration polarization (CP, current-induced concentration gradient
adjacent to a charge-selective interface) has been well studied for
single-phase mixed conductors (e.g., liquid electrolyte), but multiphase CP has
been rarely addressed in literature. In our recent publication, we proposed
that CP above certain... | 2212.10404v1 |
2023-01-09 | Memristive Memory Enhancement by Device Miniaturization for Neuromorphic Computing | The areal footprint of memristors is a key consideration in material-based
neuromorophic computing and large-scale architecture integration. Electronic
transport in the most widely investigated memristive devices is mediated by
filaments, posing a challenge to their scalability in architecture
implementation. Here we p... | 2301.03352v1 |
2023-01-13 | Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers | The advent of twist-engineering in two-dimensional (2D) crystals enables the
design of van der Waals (vdW) heterostructures exhibiting emergent properties.
In the case of magnets, this approach can afford artificial antiferromagnets
with tailored spin arrangements. Here, we fabricate an orthogonally-twisted
bilayer by ... | 2301.05647v2 |
2023-01-17 | A robust weak topological insulator in a bismuth halide Bi4Br2I2 | We apply a topological material design concept for selecting a bulk topology
of 3D crystals by different van-der-Waals stacking of 2D topological insulator
layers, and find a bismuth halide Bi4Br2I2 to be an ideal weak topological
insulator (WTI) with the largest band gap (~230 meV) among all the WTI
candidates, by mea... | 2301.07158v1 |
2023-03-08 | Fast offset corrected in-memory training | In-memory computing with resistive crossbar arrays has been suggested to
accelerate deep-learning workloads in highly efficient manner. To unleash the
full potential of in-memory computing, it is desirable to accelerate the
training as well as inference for large deep neural networks (DNNs). In the
past, specialized in... | 2303.04721v1 |
2023-03-10 | Conductivity of infinite-layer NdNiO$_{2}$ as a probe of spectator bands | Using a density-functional theory plus dynamical mean-field theory
methodology, we compute the many-body electronic structure and optical
conductivity of NdNiO$_{2}$ under the influence of large scattering rates on
the Nd($5d$) bands and including dynamical interactions on the Nd($5d$)
orbitals with shifts of the Nd-Ni... | 2303.06046v1 |
2023-04-12 | Exploring the interfacial coupling between graphene and the antiferromagnetic insulator MnPSe$_3$ | Interfacial coupling between graphene and other 2D materials can give rise to
intriguing physical phenomena. In particular, several theoretical studies
predict that the interplay between graphene and an antiferromagnetic insulator
could lead to the emergence of quantum anomalous Hall phases. However, such
phases have n... | 2304.05757v2 |
2023-04-27 | Magnetism and exchange bias properties in Ba$_{2}$ScRuO$_{6}$ | This paper presents structural, detailed magnetic, and exchange bias studies
in polycrystalline Ba$_{2}$ScRuO$_{6}$ synthesized at ambient pressure. In
contrast to its strontium analogue, this material crystallizes in a 6L
hexagonal structure with the space group P$\overline{3}$m1. The Rietveld
refinement using the roo... | 2304.13992v1 |
2023-05-10 | On the origin of permeative flows in cholesteric liquid crystals | Permeative flows, known for the explanation of the anomalous viscosity (10^5
Poise) in cholesterics at low shear rates, are still under debate due to the
difficulty of experiments. Here we use the Surface Force Balance, in which
uniform domains with regular circular defects are formed, to probe the forces
generated by ... | 2305.06189v1 |
2023-05-20 | Magnetic States of Graphene Proximitized Kitaev Materials | Single layer $\alpha$-ruthenium trichloride ($\rm\alpha-RuCl_3$) has been
proposed as a potential quantum spin liquid. Graphene/$\rm RuCl_3$
heterobilayers have been extensively studied with a focus on the large
interlayer electron transfer that dopes both materials. Here we examine the
interplay between the competing ... | 2305.12116v2 |
2023-05-31 | Unravelling densification during sintering by multiscale modelling of grain motion | The resulting microstructure after the sintering process determines many
materials properties of interest. In order to understand the microstructural
evolution, simulations are often employed. One such simulation method is the
phase-field method, which has garnered much interest in recent decades.
However, the method l... | 2305.19910v2 |
2023-06-08 | Strain-stiffening elastomers fail from the edge | The accurate measurement of fracture resistance in elastomers is essential
for predicting the mechanical limits of soft devices. Usually, this is achieved
by performing tearing or peeling experiments on thin-sheet samples. Here, we
show that these tests can be surprisingly thickness-dependent, with thicker
samples bein... | 2306.05575v1 |
2023-06-11 | Elasto-viscoplastic Spreading: from Plastocapillarity to Elastocapillarity | We study the spreading of elastoviscoplastic (EVP) droplets under surface
tension effects. The non- Newtonian material flows like a viscoelastic liquid
above the yield stress and behaves like a viscoelastic solid below it. Hence,
the droplet initially flows under surface tension forces but eventually reaches
a final eq... | 2306.06640v1 |
2023-06-15 | Long-Term Stability of Graphene/c-Si Schottky-Junction Solar Cells | A long operational lifetime is required for the use of solar cells in
real-life photovoltaic applications. The optimization of operational lifetimes
is achieved through understanding the inherent degradation phenomena in solar
cells. In this study, graphene/Si Schottky-junction solar cells were produced,
utilizing liqu... | 2306.09015v1 |
2023-06-17 | Superconductivity of Ta-Hf and Ta-Zr alloys: Potential alloys for use in superconducting devices | The electronic properties relevant to the superconductivity are reported for
bulk Ta-Hf and Ta-Zr body centered cubic alloys, in large part to determine
whether their properties are suitable for potential use in superconducting
qbits. The body centered cubic unit cell sizes increase with increasing
alloying. The result... | 2306.10438v1 |
2023-06-30 | Role of defects on carrier dynamics and transport mechanism in Bi2Te3 single crystals | Defects play an important role in determining the type of carriers as well as
on tuning the physical properties of layered materials. In this study, we have
demonstrated that by varying the growth kinetics one can control the defects
and can achieve electrons or holes dominated Bi2Te3 single crystals using
modified Bri... | 2306.17487v1 |
2023-07-05 | Mechanical Energy Absorption of Architecturally Interlocked Petal-Schwarzites | We carried out fully atomistic reactive molecular dynamics simulations to
study the mechanical behavior of six newly proposed hybrid schwarzite-based
structures (interlocked petal-schwarzites). Schwarzites are carbon crystalline
nanostructures with negative Gaussian curvature created by mapping a TPMS
(Triply Periodic ... | 2307.02660v1 |
2023-07-09 | Optimal face-to-face coupling for fast self-folding kirigami | Kirigami-inspired designs can enable self-folding three-dimensional materials
from flat, two-dimensional sheets. Hierarchical designs of connected levels
increase the diversity of possible target structures, yet they can lead to
longer folding times in the presence of fluctuations. Here, we study the effect
of rotation... | 2307.04145v1 |
2023-07-19 | Magneto-transport and electronic structures in MoSi$_2$ bulks and thin films with different orientations | We report a comprehensive study of magneto-transport properties in MoSi$_2$
bulk and thin films. Textured MoSi$_2$ thin films of around 70 nm were
deposited on silicon substrates with different orientations. Giant
magnetoresistance of 1000% was observed in sintered bulk samples while MoSi$_2$
single crystals exhibit a ... | 2307.09802v1 |
2023-07-23 | Ru doping induced spin frustration and enhancement of the room-temperature anomalous Hall effect in La2/3Sr1/3MnO3 films | In transition-metal-oxide heterostructures, the anomalous Hall effect (AHE)
is a powerful tool for detecting the magnetic state and revealing intriguing
interfacial magnetic orderings. However, achieving a larger AHE at room
temperature in oxide heterostructures is still challenging due to the dilemma
of mutually stron... | 2307.12253v1 |
2023-07-30 | Superconductivity in amorphous and crystalline Re-Lu films | We report on magnetron deposition and superconducting properties of a novel
superconducting material: rhenium-lutetium films on sapphire substrates.
Different compositions of Re$_{x}$Lu binary are explored from $x\approx 3.8$ to
close to pure Re stoichiometry. The highest critical temperature, up to
$T_{c}\approx $ 6.9... | 2307.16313v1 |
2023-08-01 | Fatigue crack growth in anisotropic aluminium sheets -- phase-field modelling and experimental validation | Fatigue crack growth is decisive for the design of thin-walled structures
such as fuselage shells of air planes. The cold rolling process, used to
produce the aluminium sheets this structure is made of, leads to anisotropic
mechanical properties. In this contribution, we simulate the fatigue crack
growth with a phase-f... | 2308.00800v1 |
2023-08-11 | Metallic Quantized Anomalous Hall Effect without Chiral Edge States | The quantum anomalous Hall effect (QAHE) is a topological state of matter
with a quantized Hall resistance. It has been observed in some two-dimensional
insulating materials such as magnetic topological insulator films and twisted
bilayer graphene. These materials are insulating in the bulk, but possess
chiral edge sta... | 2308.05963v1 |
2023-09-16 | Investigation of the Anomalous and Topological Hall Effects in Layered Monoclinic Ferromagnet Cr$_{2.76}$Te$_4$ | We studied the electrical transport, Hall effect, and magnetic properties of
monoclinic layered ferromagnet Cr$_{2.76}$Te$_4$. Our studies demonstrate
Cr$_{2.76}$Te$_4$ to be a soft ferromagnet with strong magnetocrystalline
anisotropy. Below 50 K, the system shows an antiferromagnetic-like transition.
Interestingly, b... | 2309.08898v1 |
2023-10-10 | Optical assembly of nanostructures mediated by surface roughness | Rigorous understanding of the self-assembly of colloidal nanocrystals is
crucial to the development of tailored nanostructured materials. Despite
extensive studies, a mechanistic understanding of self-assembly under
non-equilibrium driven by an external field remains an ongoing challenge. We
demonstrate self-assembly b... | 2310.06774v1 |
2023-10-20 | Surface-symmetry-driven Dzyaloshinskii--Moriya interaction and canted ferrimagnetism in collinear magnetoelectric antiferromagnet Cr$_2$O$_3$ | Antiferromagnets are normally thought of as materials with compensated
magnetic sublattices. This adds to their technological advantages but
complicates readout of the antiferromagnetic state. We demonstrate
theoretically the existence of a Dzyaloshinskii-Moriya interaction (DMI) which
is determined by the magnetic sym... | 2310.13438v1 |
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