publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2012-04-24 | Microstructural analysis of phase separation in iron chalcogenide superconductors | The interplay between superconductivity, magnetism and crystal structure in
iron-based superconductors is a topic of great interest amongst the condensed
matter physics community as it is thought to be the key to understanding the
mechanisms responsible for high temperature superconductivity. Alkali metal
doped iron ch... | 1204.5472v4 |
2017-08-16 | Single-nanowire, low-bandgap hot carrier solar cells with tunable open-circuit voltage | Compared to traditional pn-junction photovoltaics, hot carrier solar cells
offer potentially higher efficiency by extracting work from the kinetic energy
of photogenerated "hot carriers" before they cool to the lattice temperature.
Hot carrier solar cells have been demonstrated in high-bandgap ferroelectric
insulators ... | 1708.04848v1 |
2019-11-11 | Mechanical properties of VMoNO as a function of oxygen concentration: toward development of hard and tough refractory oxynitrides | Improved toughness is a central goal in the development of wear-resistant
refractory ceramic coatings. Extensive theoretical and experimental research
has revealed that NaCl structure VMoN alloys exhibit surprisingly high
ductility combined with high hardness and toughness. However, during operation,
protective coating... | 1911.04165v1 |
2020-12-25 | Superconductivity to 262 kelvin via catalyzed hydrogenation of yttrium at high pressures | Room temperature superconductivity has been achieved under high pressure in
an organically derived carbonaceous sulfur hydride with a critical
superconducting transition temperature (Tc) of 288 kelvin. This development is
part of a new class of dense, hydrogen rich materials with remarkably high
critical temperatures. ... | 2012.13627v1 |
2021-08-25 | A Stable High-Capacity Lithium-Ion Battery Using a Biomass-Derived Sulfur-Carbon Cathode and Lithiated Silicon Anode | A full lithium-ion-sulfur cell with a remarkable cycle life was achieved by
combining an environmentally sustainable biomass-derived sulfur-carbon cathode
and a pre-lithiated silicon oxide anode. X-ray diffraction, Raman spectroscopy,
energy dispersive spectroscopy, and thermogravimetry of the cathode evidenced
the dis... | 2108.11284v1 |
2023-09-07 | Enhanced strength-ductility combination by introducing bimodal grains structures in high-density oxide dispersion strengthened FeCrAl alloys fabricated by spark plasma sintering technology | Oxide dispersion strengthened FeCrAl alloys dispersed high-density
nano-oxides in the matrix show outstanding corrosion resistance and mechanical
properties. However, ODS FeCrAl alloys achieve the high strength generally at
the expense of ductility in some way. Here, a method by introducing a bimodal
grain structure wa... | 2309.03703v1 |
2017-11-14 | The Dominant Role of Critical Valence Fluctuations on High $T_{\rm c}$ Superconductivity in Heavy Fermions | Despite almost 40 years of research, the origin of heavy-fermion
superconductivity is still strongly debated. Especially, the pressure-induced
enhancement of superconductivity in CeCu$_2$Si$_2$ away from the magnetic
breakdown is not sufficiently taken into consideration. As recently reported in
CeCu$_2$Si$_2$ and seve... | 1711.05145v2 |
2017-05-09 | Universal experimental test for the role of free charge carriers in thermal Casimir effect within a micrometer separation range | We propose a universal experiment to measure the differential Casimir force
between a Au-coated sphere and two halves of a structured plate covered with a
P-doped Si overlayer. The concentration of free charge carriers in the
overlayer is chosen slightly below the critical one, f or which the phase
transition from diel... | 1705.03223v2 |
2021-03-10 | Solid phase epitaxial growth of the correlated-electron transparent conducting oxide SrVO3 | SrVO3 thin films with a high figure of merit for applications as transparent
conductors were crystallized from amorphous layers using solid phase epitaxy
(SPE). Epitaxial SrVO3 films crystallized on SrTiO3 using SPE exhibit a room
temperature resistivity of 2.5 x 10-5 Ohms cm, a residual resistivity ratio of
3.8, and v... | 2103.05797v2 |
2023-11-13 | Superconductivity in trilayer nickelate La$_4$Ni$_3$O$_{10}$ single crystals | The pursuit of discovering new high-temperature superconductors that diverge
from the copper-based paradigm carries profound implications for elucidating
mechanisms behind superconductivity and may also enable new applications. Here,
our investigation reveals that application of pressure effectively suppresses
the spin... | 2311.07353v2 |
2019-02-28 | 3D quench modeling based on T-A formulation for high temperature superconductor CORC cables | High temperature superconductor (HTS) (RE)Ba2Cu3Ox (REBCO) conductor on round
core cable (CORC) has high current carrying capacity for high field magnet and
power applications. In REBCO CORC cables, current redistribution occurs among
tapes through terminal contact resistances when a local quench occurs.
Therefore, the... | 1902.11055v1 |
2001-06-20 | Saturation of electrical resistivity in metals at large temperatures | We present a microscopic model for systems showing resistivity saturation. An
essentially exact quantum Monte-Carlo calculation demonstrates that the model
describes saturation. We give a simple explanation for saturation, using charge
conservation and considering the limit where thermally excited phonons have
destroye... | 0106397v2 |
2002-05-13 | Pseudogap effects on the charge dynamics in the underdoped copper oxide materials | Within the t-J model, the charge dynamics of copper oxide materials in the
underdoped regime is studied based on the fermion-spin theory. It is shown that
both in-plane charge dynamics and c-axis charge dynamics are mainly governed by
the scattering from the in-plane fluctuation, which would be suppressed when
the holo... | 0205248v1 |
2004-05-26 | An Inhomogeneous Josephson Phase Near the (Super) Conductor-Insulator Transition | In many cases inhomogeneities are known to exist near the metal (or
superconductor)- insulator transition, as follows from well-known domain-wall
arguments. If the conducting regions are large enough, and if they have
superconducting correlations, it becomes energetically favorable for the system
to go into a Josephson... | 0405625v1 |
2005-08-15 | Electronic structure and anisotropic transport properties in hexagonal YPtIn and LuAgGe ternary compounds | We present anisotropic, zero applied magnetic field, temperature dependent
resistivity measurements on hexagonal, non-magnetic, YPtIn and LuAgGe single
crystals. For these materials the in-plane resistivity, $\rho_{ab}$, is
significantly higher than the $c$ - axis one, $\rho_c$, with $\rho_{ab}/\rho_c
\approx 1.4$ for ... | 0508346v1 |
2010-11-12 | Microwave inductance of thin metal strips | We have measured the frequency-dependent, complex impedance of thin metal
strips in a broad range of microwave frequencies (45~MHz to 20~GHz). The
spectra are in good agreement with theoretical predictions of an RCL model. The
resistance, inductance, and capacitance, which govern the microwave response,
depend on the s... | 1011.2913v1 |
2011-01-24 | Graded anharmonic crystals as genuine thermal diodes: Analytical description of rectification and negative differential thermal resistance | We address the heat flow study starting from microscopic models of matter: we
develop an approach and investigate some anharmonic graded mass crystals, with
weak interparticle interactions. We calculate the thermal conductivity, and
show the existence of rectification and negative differential thermal
resistance. Our f... | 1101.4589v1 |
2011-07-15 | Enhanced Gas-Flow-Induced Voltage in Graphene | We show by systemically experimental investigation that gas-flow-induced
voltage in monolayer graphene is more than twenty times of that in bulk
graphite. Examination over samples with sheet resistances ranging from 307 to
1600 {\Omega}/sq shows that the induced voltage increase with the resistance
and can be further i... | 1107.3049v1 |
2016-02-17 | On the analysis of stage I in the resistivity recovery of electron irradiated iron | The experimental results of Takaki et al. [1] on the stage I resistivity
recovery of electron irradiated iron are analyzed using the analytical theory
of diffusion annealing formulated by Simpson & Sossin [2] and Schroeder [3]
taking into account the recent first-principles calculations of Fu et al. [4]
regarding the m... | 1602.05449v2 |
2016-04-18 | Large thermopower in the antiferromagnetic semiconductor BaMn$_2$Bi$_2$ | We report electrical and thermal transport properties of Mn-based material
BaMn$_2$Bi$_2$ with ThCr$_2$Si$_2$ structure. The resistivity of the
antiferromagnetic BaMn$_2$Bi$_2$ shows a metal-semiconductor transition at
$\sim 80$ K with decreasing temperature. Correspondingly, the thermopower $S$
shows a peak at the sam... | 1604.05296v1 |
2016-06-20 | Resistivity scaling in metallic thin films and nanowires due to grain boundary and surface roughness scattering | A modeling approach, based on an analytical solution of the semiclassical
multi-subband Boltzmann transport equation, is presented to study resistivity
scaling in metallic thin films and nanowires due to grain boundary and surface
roughness scattering. While taking into account the detailed statistical
properties of gr... | 1606.05972v2 |
2016-07-27 | Alloy-like behaviour of the thermal conductivity of non-symmetric superlattices | In this work, we show a phenomenological alloy-like fit of the thermal
conductivity of (A)d1:(B)d2 superlattices with d1 /= d2, i.e. non-symmetric
structure. The presented method is a generalization of the Norbury rule of the
summation of thermal resistivities in alloy compounds. Namely, we show that
this approach can ... | 1607.08017v2 |
2018-03-30 | Nanostructured Ceramic Oxides with a Slow Crack Growth Resistance Close to Covalent Materials | Oxide ceramics are sensitive to slow crack growth because adsorption of water
can take place at the crack tip, leading to a strong decrease of the surface
energy in humid (or air) conditions. This is a major drawback concerning
demanding, long-term applications such as orthopaedic implants. Here we show
that a specific... | 1804.01393v1 |
2018-05-30 | Interface thermal behavior in nanomaterials by thermal grating relaxation | We study the relaxation of a thermal grating in multilayer materials with
interface thermal resistances. The analytical development allows for the nu-
merical determination of this thermal property in Approach to Equilibrium
Molecular Dynamics and suggests an experimental setup for its measurement.
Possible non-diffusi... | 1805.12086v1 |
2019-07-04 | Pressure-induced superconductivity in SnSb2Te4 | We report the discovery of a new superconductor from phase change materials
SnSb2Te4. Single crystals of SnSb2Te4 were grown using a conventional
melting-growth method. The sample resistance under pressure was measured using
an originally designed diamond anvil cell with boron-doped diamond electrodes.
The pressure dep... | 1907.02381v1 |
2019-04-13 | Giant Interfacial Thermal Resistance Arising From Materials With Mismatched Phonon Structures | Previous researches only reported very small interfacial thermal resistances
at room temperature due to limitations in sample combinations and methods.
Taking cognizance of the importance of mismatched phonon structures, we report
values up to $2*10^{-4}W^{-1}m^{2}K$, thousand times larger than highest values
reported ... | 1904.06540v2 |
2020-01-26 | Pulse percolation conduction and multi-value memory | We develop a theory of pulse conduction in percolation type of materials such
as noncrystalline semiconductors and nano-metal compounds. For short voltage
pulses, the corresponding electric currents are inversely proportional to the
pulse length and exhibit significant nonohmicity due to strong local fields in
resistiv... | 2001.09512v3 |
2020-08-27 | Nitrobenzene as Additive to Improve Reproducibility and Degradation Resistance of Highly Efficient Methylammonium-Free Inverted Perovskite Solar Cells | We show that the addition of 1 % (v/v) nitrobenzene within the perovskite
formulation can be used as a method to improve the power conversion efficiency
and reliability performance of methylammonium-free (CsFA) inverted perovskite
solar cells. Addition of nitrobenzene increased PCE due to defect passivation
and provide... | 2008.12041v1 |
2021-10-27 | Planar Hall effect in Cu intercalated PdTe$_2$ | We present the Planar Hall effect studies on the Cu intercalated type-II
Dirac semimetal PdTe$_{2}$. The electrical resistivity exhibits a positive
field dependence both in perpendicular and parallel field directions, causing
non-zero anisotropy. The longitudinal magnetoresistance shows almost linear
field dependence a... | 2110.14251v1 |
2023-10-04 | Anisotropic transport and Negative Resistance in a polycrystalline metal-semiconductor (Ni-TiO2) hybrid | We investigate anomalous electrical transport properties of a Ni-TiO2 hybrid
system displaying a unique nanostructured morphology. The system undergoes an
insulator to metal transition below 150 K with a low temperature metallic phase
that shows negative resistance in a four-probe configuration. Temperature
dependent t... | 2310.02976v1 |
2024-02-21 | Nonlinear longitudinal current of band-geometric origin in wires of finite thickness | The miniaturization of integrated circuits is facing an obstruction due to
the escalating electrical resistivity of conventional copper interconnects. The
underlying reason for this problem was unveiled by Fuchs and Sondheimer, who
showed that thinner wires are more resistive because current-carrying electrons
encounte... | 2402.14112v1 |
2007-09-25 | Quantum to Classical Transition of the Charge Relaxation Resistance of a Mesoscopic Capacitor | We present an analysis of the effect of dephasing on the single channel
charge relaxation resistance of a mesoscopic capacitor in the linear low
frequency regime. The capacitor consists of a cavity which is via a quantum
point contact connected to an electron reservoir and Coulomb coupled to a gate.
The capacitor is in... | 0709.3956v1 |
2007-01-23 | Silicon Sensors implemented on p-type substrates for high radiation resistance applications | Silicon based micropattern detectors are essential elements of modern high
energy physics experiments. Cost effectiveness and high radiation resistance
are two important requirements for technologies to be used in inner tracking
devices. Processes based on p-type substrates have very strong appeal for these
application... | 0701270v1 |
2021-05-01 | Ultra-stable shear jammed granular material | Dry granular materials such as sand, gravel, pills, or agricultural grains,
can become rigid when compressed or sheared. At low density, one can distort
the shape of a container of granular material without encountering any
resistance. Under isotropic compression, the material will reach a certain {\it
jamming} density... | 2105.00313v3 |
2014-09-05 | Thermalization and possible quantum relaxation times in "classical" fluids: theory and experiment | Quantum effects in material systems are often pronounced at low energies and
become insignificant at high temperatures. We find that, perhaps
counterintuitively, certain quantum effects may follow the opposite route and
become sharp when extrapolated to high temperature within a "classical" liquid
phase. In the current... | 1409.1915v14 |
2002-02-15 | Resistance and Resistance Fluctuations in Random Resistor Networks Under Biased Percolation | We consider a two-dimensional random resistor network (RRN) in the presence
of two competing biased percolations consisting of the breaking and recovering
of elementary resistors. These two processes are driven by the joint effects of
an electrical bias and of the heat exchange with a thermal bath. The electrical
bias ... | 0202268v1 |
2007-03-29 | Magnetic-field cycling induced anomalous irreversibility in resistivity of charge-ordered manganites | The rare-earth ions (RE = Eu, Dy Ho, Tm, Y) substituted charge-ordered
antiferromagnetic manganites, Pr0.45RE0.05Ca0.5MnO3, were studied for the
magnetic and the transport properties in the presence of external
magnetic-fields of up to 14 Tesla. Regardless of the intrinsic magnetic
property of RE ions, all the compound... | 0703771v1 |
2011-06-02 | Anisotropic resistivity in underdoped single crystals (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$, $0 \leq x<0.35$ | Temperature-dependent in-plane, $\rho_a(T)$, and inter-plane, $\rho_c(T)$,
resistivities were measured for the iron-arsenide superconductor
(Ba$_{1-x}$K$_x$)Fe $_2$As$_2$ over a broad doping range from parent compound
to optimal doping $T_c\approx 38 K$, $0\leq x \leq 0.35$. The coupled
magnetic/structural transition a... | 1106.0533v1 |
2012-02-15 | Noise studies of magnetization dynamics in dilute magnetic semiconductor heterostructures | We study theoretically and experimentally the frequency and temperature
dependence of resistivity noise in semiconductor heterostructures delta-doped
by Mn. The resistivity noise is observed to be non-monotonous as a function of
frequency. As a function of temperature, the noise increases by two orders of
magnitude for... | 1202.3207v2 |
2016-12-02 | Structural, Morphological and Electrical Properties of Porous Silicon Prepared Under Laser Illumination | Porous silicon (PSi) layers has been prepared in this work via
photoelectrochemical (PEC) etching process of an n type silicon wafers of two
resistivities (3.5 ohm.cm and 0.02 ohm.cm) in hydrofluoric (HF) acid of 24.5
precent concentration at different etching times (5 to 25 min). The irradiation
has been achieved us... | 1612.04865v1 |
2017-11-20 | Anomalous transport properties in Nb/Bi1.95Sb0.05Se3 hybrid structure | We report the proximity induced anomalous transport behavior in a Nb
Bi1.95Sb0.05Se3 heterostructure. Mechanically Exfoliated single crystal of
Bi1.95Sb0.05Se3 topological insulator (TI) is partially covered with a 100 nm
thick Niobium superconductor using DC magnetron sputtering by shadow masking
technique. The magnet... | 1711.07147v1 |
2017-03-02 | Nature of carrier injection in metal/2D semiconductor interface and its implications to the limits of contact resistance | Monolayers of transition metal dichalcogenides (TMDCs) exhibit excellent
electronic and optical properties. However, the performance of these
two-dimensional (2D) devices are often limited by the large resistance offered
by the metal contact interface. Till date, the carrier injection mechanism from
metal to 2D TMDC la... | 1703.00671v2 |
2017-05-08 | The influence of magnetic order on the magnetoresistance anisotropy of Fe$_{1+δ-x}$Cu$_{x}$Te | We performed resistance measurements on Fe$_{1+\delta-x}$Cu$_{x}$Te with
$x_{EDX}\leq 0.06$ in the presence of in-plane applied magnetic fields,
revealing a resistance anisotropy that can be induced at a temperature far
below the structural and magnetic zero-field transition temperatures. The
observed resistance anisot... | 1705.02849v1 |
2019-06-21 | A Two Dimensional Tunneling Resistance Transmission Line Model for Nanoscale Parallel Electrical Contacts | Contact resistance and current crowding are important to nanoscale electrical
contacts. In this paper, we present a self-consistent model to characterize
partially overlapped parallel contacts with varying specific contact
resistivity along the contact length. For parallel tunneling contacts formed
between contacting m... | 1906.09188v2 |
2020-11-25 | Linear-in temperature resistivity from an isotropic Planckian scattering rate | A variety of "strange metals" exhibit resistivity that decreases linearly
with temperature as $T\rightarrow 0$, in contrast with conventional metals
where resistivity decreases as $T^2$. This $T$-linear resistivity has been
attributed to charge carriers scattering at a rate given by $\hbar/\tau=\alpha
k_{\rm B} T$, whe... | 2011.13054v2 |
2023-05-10 | Voltage-tunable giant nonvolatile multiple-state resistance in sliding-interlayer ferroelectric h-BN van der Waals multiferroic tunnel junction | Multiferroic tunnel junctions (MFTJs) based on two-dimensional (2D) van der
Waals heterostructures with sharp and clean interfaces at the atomic scale are
crucial for applications in nanoscale multi-resistive logic memory devices. The
recently discovered sliding ferroelectricity in 2D van der Waals materials has
opened... | 2305.06126v2 |
1999-08-17 | Experiments on Ladders Reveal a Complex Interplay between a Spin-Gapped Normal State and Superconductivity | In recent years, the study of ladder materials has developed into a
well-established area of research within the general context of Strongly
Correlated Electrons. This effort has been triggered by an unusual
cross-fertilization between theory and experiments. In this paper, the main
experimental results obtained in the... | 9908250v1 |
2001-03-03 | Magnetic properties of magnetically textured Bi-2212 ceramics | This paper aims at reporting magnetic properties of bulk polycrystalline
Bi2Sr2Ca0.8Dy0.2Cu2O8-y samples textured under a magnetic field. The
microstructure of these materials is highly anisotropic and exhibits particular
features needed to be taken into account in order to interpret their magnetic
and electrical prope... | 0103081v2 |
2005-02-16 | Abrupt metal-insulator transition observed in VO2 thin films induced by a switching voltage pulse | An abrupt metal-insulator transition (MIT) was observed in VO2 thin films
during the application of a switching voltage pulse to two-terminal devices.
Any switching pulse over a threshold voltage for the MIT of 7.1 V enabled the
device material to transform efficiently from an insulator to a metal. The
characteristics ... | 0502375v4 |
2006-05-19 | Magnetic unipolar features in con- ductivity of point contacts between normal and ferromagnetic d-metals (Co, Ni, Fe) | In nanocontacts between normal and ferromagnetic metals (N--F) abrupt changes
of the order of 1% are detected in differential resistance, dV/dI(V), versus
bias voltage, V, on achieving of high current densities, ~10^9 A/cm^2. These
features in dV/dI(V) are observed when the electron flow is directed from the
nonmagneti... | 0605485v1 |
2007-08-14 | Landscape phage, phage display, stripped phage, biosensors, detection, affinity reagent, nanotechnology, Salmonella typhimurium, Bacillus anthracis | Filamentous phage, such as fd used in this study, are thread-shaped bacterial
viruses. Their outer coat is a tube formed by thousands equal copies of the
major coat protein pVIII. We constructed libraries of random peptides fused to
all pVIII domains and selected phages that act as probes specific for a panel
of test a... | 0708.1823v1 |
2010-01-28 | A simple kinetic sensor to structural transitions | Driven non-equilibrium structural phase transformation has been probed using
time varying resistance fluctuations or noise. We demonstrate that the
non-Gaussian component (NGC) of noise obtained by evaluating the higher order
statistics of fluctuations, serves as a simple kinetic detector of these phase
transitions. Us... | 1001.5137v1 |
2010-03-04 | Spin glass like behavior in the novel layered material Na_2IrO_3 | We have synthesized the novel material Na_2IrO_3 and studied its structure,
transport, magnetic, and thermal properties using powder x-ray diffraction
(PXRD), electrical resistivity, isothermal magnetization M versus magnetic
field H, static \chi and dynamic \chi_ac magnetic susceptibility versus
temperature T, and hea... | 1003.0973v2 |
2013-01-10 | Micro-branching in mode-I fracture in a randomly perturbed lattice | We study mode-I fracture in lattices with noisy bonds. In contrast to
previous attempts, by using a small parameter that perturbs the force-law
between the atoms in perfect lattices and using a 3-body force law, simulations
reproduce the qualitative behavior of the beyond steady-state cracks in the
high velocity regime... | 1301.2143v1 |
2013-04-24 | Supramolecular Spin Valves | Magnetic molecules possess a high potential as building blocks for the design
of spintronic devices. Moreover, the use of molecular materials opens the way
for the controlled use of bottom-up, e.g. supramolecular, processing techniques
combining massively parallel self-fabrication with conventional top-down
nanostructu... | 1304.6543v1 |
2014-09-10 | Controlling and distinguishing electronic transport of topological and trivial surface states in a topological insulator | Topological insulators (TI), with characteristic Dirac-fermion topological
surface states (TSS), have emerged as a new class of electronic materials with
rich potentials for both novel physics and device applications. However, a
major challenge with realistic TI materials is to access, distinguish and
manipulate the el... | 1409.3217v1 |
2014-09-12 | Fast non-thermal switching between macroscopic charge-ordered quantum states induced by charge injection | The functionality of logic and memory elements in current electronics is
based on multi-stability, driven either by manipulating local concentrations of
electrons in transistors, or by switching between equivalent states of a
material with a degener- ate ground state in magnetic or ferroelectric
materials. Another poss... | 1409.3794v1 |
2014-10-19 | Enabling microstructural changes of FCC/BCC alloys in 2D dislocation dynamics | Dimension reduction procedure is the recipe to represent defects in two
dimensional dislocation dynamics according to the changes in the geometrical
properties of the defects triggered by different conditions such as radiation,
high temperature, or pressure. In the present study, this procedure is extended
to incorpora... | 1410.5094v2 |
2015-10-22 | Thermal conductivity of III-V semiconductor superlattices | This paper presents a semiclassical model for the anisotropic thermal
transport in III-V semiconductor superlattices (SLs). An effective interface
rms roughness is the only adjustable parameter. Thermal transport inside a
layer is described by the Boltzmann transport equation in the relaxation time
approximation and is... | 1510.06725v1 |
2016-08-22 | Superconducting Order from Disorder in 2H-TaSe$_{2-x}$S$_{x}$ (0$\leq$x$\leq$2) | We report on the emergence of robust superconducting order in single crystal
alloys of 2H-TaSe$_{2-x}$S$_{x}$ (0$\leq$x$\leq$2) . The critical temperature
of the alloy is surprisingly higher than that of the two end compounds
TaSe$_{2}$ and TaS$_{2}$. The evolution of superconducting critical temperature
T$_{c} (x)$ co... | 1608.06275v2 |
2017-02-07 | Quantitative Nanoscale Mapping of Three-Phase Thermal Conductivities in Filled Skutterudites via Scanning Thermal Microscopy | In the last two decades, a nanostructuring paradigm has been successfully
applied in a wide range of thermoelectric materials, resulting in significant
reduction in thermal conductivity and superior thermoelectric performance.
These advances, however, have been accomplished without directly investigating
the local ther... | 1702.01895v3 |
2017-06-24 | Probing nanocrystalline grain dynamics in nanodevices | Dynamical structural defects exist naturally in a wide variety of solids.
They fluctuate temporally, and hence can deteriorate the performance of many
electronic devices. Thus far, the entities of such dynamic objects have been
identified to be individual atoms. On the other hand, it is a long-standing
question whether... | 1706.07887v1 |
2017-12-27 | Controlled synthesis of the antiperovskite oxide superconductor Sr$_{3-x}$SnO | A large variety of perovskite oxide superconductors are known, including some
of the most prominent high-temperature and unconventional superconductors.
However, superconductivity among the oxidation state inverted material class,
the antiperovskite oxides, was reported just recently for the first time. In
this superco... | 1712.09484v1 |
2018-04-11 | NMR and the antiferromagnetic crystal phase regions in rapidly quenched ribbons and in alloys of the type $Cu-Mn-Al$ | It was shown that anomalous resistivity behavior of the $Cu-Mn-Al$ ribbons is
explained by the s-d interaction between conduction electrons and the clustered
Mn atoms. While nuclear magnetic resonance measurements show the
antiferromagnetic and ferromagnetic clusters of Mn atom coexisting without
long-range order, it i... | 1804.04196v1 |
2020-03-25 | Magnetic-field-induced FM-AFM metamagnetic transition and strong negative magnetoresistance in Mn$_{1/4}$NbS$_2$ under pressure | Transition metal dichalcogenides (TMDC) stand out with their high chemical
stability and the possibility to incorporate a wide range of magnetic species
between the layers. The behavior of conduction electrons in such materials
intercalated by 3d-elements is closely related to their magnetic properties and
can be sensi... | 2003.11678v1 |
2017-03-16 | Elemental Phosphorus: structural and superconducting phase diagram under pressure | Pressure-induced superconductivity and structural phase transitions in
phosphorous (P) are studied by resistivity measurements under pressures up to
170 GPa and fully $ab-initio$ crystal structure and superconductivity
calculations up to 350 GPa. Two distinct superconducting transition temperature
(T$_{c}$) vs. pressur... | 1703.05694v1 |
2018-10-08 | Monte Carlo phonon transport simulations in hierarchically disordered silicon nanostructures | Hierarchical material nanostructuring is considered to be a very promising
direction for high performance thermoelectric materials. In this work we
investigate thermal transport in hierarchically nanostructured silicon. We
consider the combined presence of nanocrystallinity and nanopores, arranged
under both ordered an... | 1810.03334v1 |
2020-09-22 | A cracking oxygen story: a new view of stress corrosion cracking in titanium alloys | Titanium alloys can suffer from halide-associated stress corrosion cracking
at elevated temperatures e.g., in jet engines, where chlorides and Ti-oxide
promote the cracking of water vapour in the gas stream, depositing embrittling
species at the crack tip. Here we report, using isotopically-labelled
experiments, that c... | 2009.10567v2 |
2017-05-08 | Casimir free energy of dielectric films: Classical limit, low-temperature behavior and control | The Casimir free energy of dielectric films, both free-standing in vacuum and
deposited on metallic or dielectric plates, is investigated. It is shown that
the values of the free energy depend considerably on whether the calculation
approach used neglects or takes into account the dc conductivity of film
material. We d... | 1705.02897v1 |
2017-07-17 | Realizing Thermoelectric and Thermistor Bi-functionalities via Triggering Electron Correlations with Lattice-dipole | Establishing strong electron-correlations not only shed lights on overcoming
the trade-off limitations for optimizing thermoelectric materials, but can also
introduce new functionalities that extend the vision of conventional
thermoelectric applications. Here, we demonstrate that the high thermoelectric
and thermistor ... | 1707.04988v2 |
2017-08-17 | Tailoring tricolor structure of magnetic topological insulator for robust axion insulator | Exploration of novel electromagnetic phenomena is a subject of great interest
in topological quantum materials. One of the unprecedented effects to be
experimentally verified is topological magnetoelectric (TME) effect originating
from an unusual coupling of electric and magnetic fields in materials. A
magnetic heteros... | 1708.05387v1 |
2019-03-02 | AC Elastocaloric effect as a probe for thermodynamic signatures of continuous phase transitions | Studying the response of materials to strain can elucidate subtle properties
of electronic structure in strongly correlated materials. So far, mostly the
relation between strain and resistivity, the so called elastoresistivity, has
been investigated. The elastocaloric effect is a second rank tensor quantity
describing ... | 1903.00791v1 |
2019-03-27 | Investigation of Room Temperature Ferroelectricity and Ferrimagnetism in Multiferroic AlxFe2-xO3 Epitaxial Thin Films | Multiferroic materials open up the possibility to design novel functionality
in electronic devices, with low energy consumption. However, there are very few
materials that show multiferroicity at room temperature, which is essential to
be practically useful. AlxFe2-xO3 (x-AFO) thin films, belonging to the k-Al2O3
famil... | 1903.11422v1 |
2016-09-09 | Extremely large magnetoresistance in a topological semimetal candidate pyrite PtBi2 | While pyrite-type PtBi2 with face-centered cubic structure has been predicted
to be a three-dimensional (3D) Dirac semimetal, experimental study on its
physical properties remains absent. Here we report the angular-dependent
magnetoresistance (MR) measurements of PtBi2 single-crystal under high magnetic
fields. We obse... | 1609.02626v2 |
2019-06-19 | Apparatus for Seebeck coefficient measurement of wire, thin film and bulk materials in the wide temperature range (80-650K) | A Seebeck coefficient measurement apparatus has been designed and developed,
which is very effective for accurate characterization of different type of
samples in a wide temperature range (80 - 650K) simultaneously covering low as
well as the high-temperature regime. Reducing the complexity of the technical
design of s... | 1906.08023v2 |
2019-11-20 | Piezoelectricity in monolayer hexagonal boron nitride | Two-dimensional (2D) hexagonal boron nitride (hBN) is a wide-bandgap van der
Waals crystal with a unique combination of properties, including exceptional
strength, large oxidation resistance at high temperatures and optical
functionalities. Furthermore, in recent years hBN crystals have become the
material of choice fo... | 1911.09134v1 |
2020-07-16 | The influence of material properties and process parameters on the spreading process in additive manufacturing | Laser powder bed fusion (LPBF) is an additive manufacturing (AM) technology.
To achieve high product quality, the powder is best spread as a uniform, dense
layer. The challenge for LPBF manufacturers is to develop a spreading process
that can produce a consistent layer quality for the many powders used, which
show cons... | 2007.10125v1 |
2021-03-12 | Nanodevices engineering and spin transport properties of MnBi2Te4 monolayer | Two-dimensional (2D) magnetic materials are essential for the development of
the next-generation spintronic technologies. Recently, layered van der Waals
(vdW) compound MnBi2Te4 (MBT) has attracted great interest, and its 2D
structure has been reported to host coexisting magnetism and topology. Here, we
design several ... | 2103.07025v1 |
2021-04-12 | Fiber Packing and Morphology Driven Moisture Diffusion Mechanics in Reinforced Composites | Fiber reinforced polymer composite (FRPC) materials are extensively used in
lightweight applications due to their high specific strength and other
favorable properties including enhanced endurance and corrosion resistance.
However, these materials are inevitably exposed to moisture, which is known to
drastically reduce... | 2104.05180v2 |
2021-05-01 | Anisotropy and Current Control of Magnetization in SrRuO$_3$ SrTiO$_3$ Heterostructures for Spin-Memristors | Spintronics-based nonvolatile components in neuromorphic circuits offer the
possibility of realizing novel functionalities at low power. Current-controlled
electrical switching of magnetization is actively researched in this context.
Complex oxide heterostructures with perpendicular magnetic anisotropy (PMA),
consistin... | 2105.00269v1 |
2021-05-05 | Ni$_{80}$Fe$_{20}$ Nanotubes with Optimized Spintronic Functionalities Prepared by Atomic Layer Deposition | Permalloy Ni$_{80}$Fe$_{20}$ is one of the key magnetic materials in the
field of magnonics. Its potential would be further unveiled if it could be
deposited in three dimensional (3D) architectures of sizes down to the
nanometer. Atomic Layer Deposition, ALD, is the technique of choice for
covering arbitrary shapes wit... | 2105.01969v1 |
2021-09-17 | Towards replacing physical testing of granular materials with a Topology-based Model | In the study of packed granular materials, the performance of a sample (e.g.,
the detonation of a high-energy explosive) often correlates to measurements of
a fluid flowing through it. The "effective surface area," the surface area
accessible to the airflow, is typically measured using a permeametry apparatus
that rela... | 2109.08777v1 |
2021-11-11 | Tuning the Room Temperature Ferromagnetism in Fe5GeTe2 by Arsenic Substitution | In order to tune the magnetic properties of the cleavable high-Curie
temperature ferromagnet Fe$_{5-x}$GeTe$_2$, the effect of increasing the
electron count through arsenic substitution has been investigated. Small
additions of arsenic (2.5 and 5%) seemingly enhance ferromagnetic order in
polycrystalline samples by que... | 2111.06439v1 |
2022-01-11 | Antiferromagnetic Excitonic Insulator State in Sr3Ir2O7 | Excitonic insulators are usually considered to form via the condensation of a
soft charge mode of bound electron-hole pairs. This, however, presumes that the
soft exciton is of spin-singlet character. Early theoretical considerations
have also predicted a very distinct scenario, in which the condensation of
magnetic ex... | 2201.04030v1 |
2022-03-18 | Surface temperature and emissivity measurement for materials exposed to a flame through two-color IR-thermography | Two-color (2C) pyrometry has long been used for flame temperature and soot
concentration studies and is now becoming more widely used to measure surface
temperatures of burning materials. With the obvious advantage of being a
contact-free method that requires only minimal optical access, 2C pyrometry
combined with high... | 2203.09689v1 |
2022-04-11 | A-type antiferromagnetic order in semiconducting EuMg$_2$Sb$_2$ single crystals | Eu-based Zintl-phase materials EuA$_2$Pn$_2$ (A = Mg, In, Cd, Zn; Pn = Bi,
Sb, As, P) have generated significant recent interest owing to the complex
interplay of magnetism and band topology. Here, we investigated the electronic,
magnetic, and electronic properties of the layered Zintl-phase single crystals
of EuMg$_2$... | 2204.05261v1 |
2022-05-11 | Tunable photochemical deposition of silver nanostructures on layered ferroelectric CuInP$_2$S6 | 2D layered ferroelectric materials such as CuInP$_2$S6 (CIPS) are promising
candidates for novel and high-performance photocatalysts, owning to their
ultrathin layer thickness, strong interlayer coupling, and intrinsic
spontaneous polarization, while how to control the photocatalytic activity in
layered CIPS remains un... | 2205.05385v2 |
2022-06-23 | Superconductivity in the crystallogenide LaFeSiO$_{1-δ}$ with squeezed FeSi layers | Pnictogens and chalcogens are both viable anions for promoting Fe-based
superconductivity and intense research activity in the related families has
established systematic correlation between the Fe-anion height and the
superconducting critical temperature $T_c$, with an optimum Fe-anion height of
$\sim$ 1.38 \r{A}. Her... | 2206.11690v1 |
2022-10-18 | All-electrical spin-to-charge conversion in sputtered Bi$_x$Se$_{1-x}$ | One of the major obstacles to realizing spintronic devices such as MESO logic
devices is the small signal magnitude used for magnetization readout, making it
important to find materials with high spin-to-charge conversion efficiency.
Although intermixing at the junction of two materials is a widely occurring
phenomenon... | 2210.09792v1 |
2023-09-09 | Intrinsic magnetic properties of the layered antiferromagnet CrSBr | Van der Waals magnetic materials are an ideal platform to study
low-dimensional magnetism. Opposed to other members of this family, the
magnetic semiconductor CrSBr is highly resistant to degradation in air, which,
besides its exceptional optical, electronic, and magnetic properties, is the
reason the compound is recei... | 2309.04778v1 |
2024-01-25 | Threshold displacement energy map of Frenkel pair generation in $\rm Ga_2O_3$ from machine-learning-driven molecular dynamics simulations | $\beta$ phase gallium oxide ($\beta$-$\rm Ga_2O_3$) demonstrates tremendous
potential for electronics applications and offers promising prospects for
integration into future space systems with the necessity of high radiation
resistance. Therefore, a comprehensive understanding of the threshold
displacement energy (TDE)... | 2401.14039v2 |
2024-03-06 | Collision Cascade-Driven Evolution of Vacancy Defects in Ni-Based Concentrated Solid-Solution Alloys | Concentrated solid--solution alloys (CSAs) in single--phase form have
recently garnered considerable attention owing to their potential for
exceptional irradiation resistance. This computational study delves into the
intricate interplay of alloying elements on the generation, recombination, and
evolution of irradiation... | 2403.03922v1 |
2024-05-08 | Pressure induced metallization and loss of surface magnetism in FeSi | Single crystalline FeSi samples with a conducting surface state (CSS) were
studied under high pressure ($\textit{P}$) and magnetic field ($\textit{B}$) by
means of electrical resistance ($\textit{R}$) measurements to explore how the
bulk semiconducting state and the surface state are tuned by the application of
pressur... | 2405.04739v1 |
2024-05-09 | Controlled Fabrication of Native Ultra-Thin Amorphous Gallium Oxide from 2D Gallium Sulfide for Emerging Electronic Applications | Oxidation of two-dimensional (2D) layered materials has proven advantageous
in creating oxide/2D material heterostructures, opening the door for a new
paradigm of low-power electronic devices. Gallium (II) sulfide ($\beta$-GaS), a
hexagonal phase group III monochalcogenide, is a wide bandgap semiconductor
with a bandga... | 2405.05632v1 |
2013-06-04 | Constitutive Model for Material Comminuting at High Shear Rate | The modeling of high velocity impact into brittle or quasibrittle solids is
hampered by the unavailability of a constitutive model capturing the effects of
material comminution into very fine particles. The present objective is to
develop such a model, usable in finite element programs. The comminution at
very high str... | 1306.1120v1 |
2005-10-03 | A Study of Apparent Symmetry Breakdown in Perovskite Oxide-based Symmetric RRAM Devices | A new model of a symmetric two-terminal non-volatile RRAM device based on
Perovskite oxide thin film materials, specifically Pr1-xCaxMnO3 (PCMO), is
proposed and analyzed. The model consists of two identical half-parts, which
are completely characterized by the same resistance verses pulse voltage
hysteresis loop, conn... | 0510059v1 |
2009-02-20 | Lattice Resistance to Dislocation Motion : Singularity Distribution Approach | This paper has been withdrawn. | 0902.3505v3 |
2015-03-03 | Negative differential resistance and characteristic nonlinear electromagnetic response of a Topological Insulator | Materials exhibiting negative differential resistance have important
applications in technologies involving microwave generation, which range from
motion sensing to radio astronomy. Despite their usefulness, there has been few
physical mechanisms giving rise to materials with such properties, i.e. GaAs
employed in the ... | 1503.01097v4 |
2016-01-09 | Flux trapping in superconducting accelerating cavities during cooling down with a spatial temperature gradient | During the cool-down of a superconducting accelerating cavity, a magnetic
flux is trapped as quantized vortices, which yield additional dissipation and
contribute to the residual resistance. Recently, cooling down with a large
spatial temperature gradient attracts much attention for successful reductions
of trapped vor... | 1601.02118v2 |
2018-01-08 | Magnetoresistance when Spin Effects on Conduction are Weak | This paper considers certain materials, including topological insulators,
where spin rotation symmetry is broken much more strongly than time reversal
symmetry. When these materials are in the diffusive regime, i.e. when they have
disorder that is strong enough to cause an electron to scatter many times while
crossing ... | 1801.02663v6 |
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