publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
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2019-05-04 | Pressure enhanced interplay among lattice, spin and charge in La2FeMnO6 mixed perovskite | Spin crossover plays a central role in the structural instability, net
magnetic moment modification, metallization, and even in superconductivity in
corresponding materials. Most reports on the pressure-induced spin crossover
with a large volume collapse so far focused on compounds with single transition
metal. Here we... | 1905.01521v1 |
2012-03-16 | Development and preliminary tests of resistive microdot and microstrip detectors | In the last few years our group have focused on developing various designs of
spark-protected micropattern gaseous detectors featuring resistive electrodes
instead of the traditional metallic ones: resistive microstrip counters,
resistive GEM, resistive MICROMEGAS. These detectors combine in one design the
best feature... | 1203.3658v2 |
2022-10-25 | Stopping Resistance Drift in Phase Change Memory Cells and Analysis of Charge Transport in Stable Amorphous Ge2Sb2Te5 | We stabilize resistance of melt-quenched amorphous Ge2Sb2Te5 (a-GST) phase
change memory (PCM) line cells by substantially accelerating resistance drift
and bringing it to a stop within a few minutes with application of high
electric field stresses. The acceleration of drift is clearly observable at
electric fields > 2... | 2210.14035v1 |
2013-07-08 | 5d transition metal oxide IrO2 as a material for spin current detection | Devices based on a pure spin current (a flow of spin angular momentum) have
been attracting increasing attention as key ingredients for low-dissipation
electronics. To integrate such spintronics devices into charge-based
technologies, an electric detection of spin current is essential. Inverse spin
Hall effect converts... | 1307.2121v1 |
2018-10-31 | Challenges in materials and devices for Resistive-Switching-based Neuromorphic Computing | This tutorial describes challenges and possible avenues for the
implementation of the components of a solid-state system, which emulates a
biological brain. The tutorial is devoted mostly to a charge-based (i.e.
electric controlled) implementation using transition metal oxides materials,
which exhibit unique properties... | 1812.01120v1 |
2023-01-25 | $T-$linear resistivity from magneto-elastic scattering: application to PdCrO$_2$ | An electronic solid with itinerant carriers and localized magnetic moments
represents a paradigmatic strongly correlated system. The electrical transport
properties associated with the itinerant carriers, as they scatter off these
local moments, has been scrutinized across a number of materials. Here we
analyze the tra... | 2301.10776v2 |
2011-11-14 | Nanostructuring of Ba8Ga16Ge30 clathrates | First thermoelectric properties measurements on bulk nanostructured
Ba8Ga16Ge30 clathrate-I are presented. A sol-gel-calcination route was
developed for preparing amorphous nanosized precursor oxides. The further
reduction of the oxides led to quantitative yield of crystalline nanosized
Ba8Ga16Ge30 clathrate-I. TEM inv... | 1111.3233v1 |
2013-02-10 | Synthesis and properties of charge-ordered thallium halide perovskites, CsTl1+0.5Tl3+0.5X3 (X = F, Cl)- theoretical precursors for superconductivity? | Recently CsTlCl3 and CsTlF3 perovskites were theoretically predicted to be
potential superconductors if they are optimally doped. The synthesis of these
two compounds, together with a complete characterization of the samples are
reported. CsTlCl3 is obtained as orange crystals in two different polymorphs: a
tetragonal ... | 1302.2353v3 |
2021-03-28 | Radiation-tolerant high-entropy alloys via interstitial-solute-induced chemical heterogeneities | High-entropy alloys (HEAs) composed of multiple principal elements have been
shown to offer improved radiation resistance over their elemental or
dilute-solution counterparts. Using NiCoFeCrMn HEA as a model, here we
introduce carbon and nitrogen interstitial alloying elements to impart chemical
heterogeneities in the ... | 2103.15134v1 |
2024-01-21 | Hydrostatic pressure effect on structural and transport properties of co-existing layered and disordered rock-salt phase of LixCoO2 | It is widely believed that the origin of a significant cause for the voltage
and capacity fading observed in lithium (Li)-ion batteries is related to
structural modifications occurring in the cathode material during the Li-ion
insertion/de-insertion process. The Li-ion insertion/de-insertion mechanism and
the resulting... | 2401.11446v1 |
2017-01-18 | Intermittent Preventive Treatment (IPT): Its role in averting disease-induced mortalities in children and in promoting the spread of antimalarial drug resistance | We develop a variable population age-structured ODE model to investigate the
role of Intermittent Preventive Treatment (IPT) in averting malaria-induced
mortalities in children, as well as its related cost in promoting the spread of
anti-malarial drug resistance. IPT, a malaria control strategy in which a full
curative... | 1701.05210v1 |
2019-12-22 | Bulk Polycrystalline Ceria Doped Al$_2$O$_3$ and YAG Ceramics for High-Power Density Laser-Driven Solid-State White Lighting: Effects of Crystallinity and Extreme Temperatures | Here we develop and characterize high thermal conductivity/high thermal shock
resistant bulk Ce doped Al2O3 and propose it as a new phosphor converting
capping layer for high-powered/high-brightness solid-state white lighting
(SSWL). The bulk, dense Ce:Al2O3 ceramics have a 0.5 at.% Ce:Al concentration
(significantly h... | 1912.10393v1 |
1992-08-05 | Transport Properties of the Infinite Dimensional Hubbard Model | Results for the optical conductivity and resistivity of the Hubbard model in
infinite spatial dimensions are presented. At half filling we observe a gradual
crossover from a normal Fermi-liquid with a Drude peak at $\omega=0$ in the
optical conductivity to an insulator as a function of $U$ for temperatures
above the an... | 9208002v1 |
1997-12-05 | Spin flip scattering in magnetic junctions | Processes which flip the spin of an electron tunneling in a junction made up
of magnetic electrodes are studied. It is found that: i) Magnetic impurities
give a contribution which increases the resistance and lowers the
magnetoresistance, which saturates at low temperatures. The conductance
increases at high fields. ii... | 9712075v1 |
1998-12-14 | Charged impurity scattering limited low temperature resistivity of low density silicon inversion layers | We calculate within the Boltzmann equation approach the charged impurity
scattering limited low temperature electronic resistivity of low density
$n$-type inversion layers in Si MOSFET structures. We find a rather sharp
quantum to classical crossover in the transport behavior in the $0 - 5$K
temperature range, with the... | 9812216v3 |
2000-02-17 | Strong, Ultra-narrow Peaks of Longitudinal and Hall Resistances in the Regime of Breakdown of the Quantum Hall Effect | With unusually slow and high-resolution sweeps of magnetic field, strong,
ultra-narrow (width down to $100 {\rm \mu T}$) resistance peaks are observed in
the regime of breakdown of the quantum Hall effect. The peaks are dependent on
the directions and even the history of magnetic field sweeps, indicating the
involvemen... | 0002267v1 |
2001-03-28 | Microwave Surface Resistance in MgB2 | Measurements of the temperature dependence of the surface resistance at 3 GHz
of 100 micron size grains of MgB_2 separated powder are presented and
discussed. The microwave surface resistance data is compared to experimental
results of Nb, Bi_2Sr_2CaCu_2O_{8+\delta} (BSCCO) and theoretical predictions
of s-wave weak co... | 0103587v2 |
2002-10-17 | Origin of superconductivity transition broadening in MgB2 | We report resistivity and magnetization of single crystal MgB2, focusing on
the broadening of superconducting (SC) transition in magnetic fields. In-plane
and out-of-plane resistivity indicate that the broadening of superconducting
transition is independent of Lorentz force and that it is merely dependent on
the magnet... | 0210358v1 |
2003-03-07 | Drift plasma instability near the edge as the origin of the microwave-induced zero-resistance states | We discuss a possible origin of the recently discovered microwave-induced
zero-resistance states in very-high-electron-mobility two-dimensional electron
systems. We suggest a scenario, in which two mechanisms, bulk and edge,
contribute to the measured photosignal. Zero-resistance states are assumed to
be due to a drift... | 0303130v1 |
2003-04-22 | Upper critical fields of MgB2 thin films | Critical fields of four MgB2 thin films with a normal state resistivity
ranging from 5 to 50 mWcm and Tc from 29.5 to 38.8 K were measured up to 28 T.
Hc2(T) curves present a linear behavior towards low temperatures. Very high
critical field values have been found, up to 24 T along the c-axis and 57 T in
the basal plan... | 0304478v1 |
2004-07-14 | Zero-Resistance States Induced by Electromagnetic-Wave Excitation in GaAs/AlGaAs Heterostructures | We report the detection of novel zero-resistance states induced by
electromagnetic wave excitation in ultra high mobility GaAs/AlGaAs
heterostructure devices, at low magnetic fields, $B$, in the large filling
factor limit. Vanishing resistance is observed in the vicinity of $B =
[4/(4j+1)] B_{f}$, where $B_{f} = 2\pi\t... | 0407367v1 |
2006-04-03 | Pulsed versus DC I-V characteristics of resistive manganites | We report on pulsed and DC I-V characteristics of polycrystalline samples of
three charge-ordered manganites, Pr_{2/3}Ca_{1/3}MnO_3, Pr_{1/2}Ca_{1/2}MnO_3,
Bi_{1/2}Sr_{1/2}MnO_3 and of a double-perovskite Sr_2MnReO_6, in a temperature
range where their ohmic resistivity obeys the Efros-Shklovskii variable range
hopping... | 0604049v1 |
2006-06-13 | Peculiar behavior of the electrical resistivity of MnSi at the ferromagnetic phase transition | The electrical resistivity of a single crystal of MnSi was measured across
its ferromagnetic phase transition line at ambient and high pressures. Sharp
peaks of the temperature coefficient of resistivity characterize the transition
line. Analysis of these data shows that at pressures to ~0.35 GPa these peaks
have fine ... | 0606324v1 |
2006-10-23 | Microwave induced negative resistance states in 2D electron gas with periodic modulation | We study the microwave-induced photoconductivity of a two-dimensional
electron system (2DES) in the presence of a magnetic field and a
two-dimensional modulation. The microwave and Landau contributions are exactly
taken into account, while the periodic potential is treated perturbatively. The
longitudinal resistivity e... | 0610643v1 |
2002-09-10 | Evolution of Electrical Resistivity, Thermal Conductivity, and Temperature of a solid under the action of Intense Ultrashort Laser pulse | The dynamical properties of Cu in a regime relevant to femtosecond micro
machining are obtained on picosecond time scales using pump-probe reflectivity
study for 100fs, 1015 W cm-2 laser pulses. The electrical resistivity is
obtained by solving Helmoltz equations. The dissipation mechanisms and scaling
laws are obtaine... | 0209037v1 |
1996-07-12 | Flux flow resistivity and vortex viscosity of high-Tc films | The flux flow regime of high-T$_{\rm c}$ samples of different normal state
resistivities is studied in the temperature range where the sign of the Hall
effect is reversed. The scaling of the vortex viscosity with normal state
resistivity is consistent with the Bardeen-Stephen theory. Estimates of the
influence of possi... | 9607003v1 |
2007-05-15 | Excitation of MHD waves in magnetized anisotropic cosmologies | The excitation of cosmological perturbations in an anisotropic cosmological
model and in the presence of a homogeneous magnetic field was studied, using
the resistive magnetohydrodynamic (MHD) equations. We have shown that
fast-magnetosonic modes, propagating normal to the magnetic field grow
exponentially and saturate... | 0705.2194v1 |
2007-12-10 | Non-local electron transport and cross-resistance peak in NSN heterostructures | We develop a microscopic theory describing the peak in the temperature
dependence of the non-local resistance of three-terminal NSN devices. This peak
emerges at sufficiently high temperatures as a result of a competition between
quasiparticle/charge imbalance and subgap (Andreev) contributions to the
conductance matri... | 0712.1408v1 |
2008-10-08 | Pressure-induced superconductivity in Iron pnictide compound SrFe2As2 | Electrical resistivity under high pressure have been measured on nominally
pure SrFe2As2 up to 14 GPa. The resistivity drop appeared with increasing
pressure, and we clearly observed zero resistivity. The maximum of
superconducting transition temperature (Tc) is 38 K. The value is corresponding
to the one of optimally ... | 0810.1377v1 |
2010-12-13 | Role of domain wall fluctuations in non-Fermi liquid behavior of metamagnets | We study resistivity temperature dependence of a three dimensional metamagnet
near the metamagnet phase transition point in the case when magnetic structure
tends to split into regions with high and low magnetization. We show that in
the case of weak pinning the spin relaxation time of domain wall is much larger
than t... | 1012.2617v2 |
2011-09-04 | Phase diffusion in graphene-based Josephson junctions | We report on graphene-based Josephson junctions with contacts made from lead.
The high transition temperature of this superconductor allows us to observe the
supercurrent branch at temperatures up to $\sim 2$ K, at which point we can
detect a small, but non-zero, resistance. We attribute this resistance to the
phase di... | 1109.0769v1 |
2012-12-01 | Modeling magnetized neutron stars using resistive MHD | This work presents an implementation of the resistive MHD equations for a
generic algebraic Ohm's law which includes the effects of finite resistivity
within full General Relativity. The implementation naturally accounts for
magnetic-field-induced anisotropies and, by adopting a phenomenological
current, is able to acc... | 1212.0130v1 |
2013-06-29 | On the beneficial role of noise in resistive switching | We study the effect of external noise on resistive switching. Experimental
results on a manganite sample are presented showing that there is an optimal
noise amplitude that maximizes the contrast between high and low resistive
states. By means of numerical simulations, we study the causes underlying the
observed behavi... | 1307.0143v1 |
2015-01-22 | Tests of a Novel Design of Resistive Plate Chambers | A novel design of Resistive Plate Chambers (RPCs), using only a single
resistive plate, is being proposed. Based on this design, two large size
prototype chambers were constructed and were tested with cosmic rays and in
particle beams. The tests confirmed the viability of this new approach. In
addition to showing an im... | 1501.05907v2 |
2015-10-12 | Radiation-assisted magnetotransport in two-dimensional electron gas systems: appearance of zero resistance states | Zero-Resistance States (ZRS) are normally associated with superconducting and
quantum Hall phases. Experimental detection of ZRS in two-dimensional electron
gas (2DEG) systems irridiated by microwave(MW) radiation in a magnetic field
has been quite a surprise. We develop a semiclassical transport formalism to
explain t... | 1510.03187v1 |
2016-06-27 | Characterization of Methicillin-resistant Staphylococcus aureus Isolates from Fitness Centers in Memphis Metropolitan Area, USA | Indoor skin-contact surfaces of public fitness centers may serve as
reservoirs of potential human transmission of methicillin-resistant
Staphylococcus aureus (MRSA). We found a high prevalence of multi-drug
resistant (MDR)-MRSA of CC59 lineage harboring a variety of extracellular toxin
genes from surface swab samples c... | 1606.08377v1 |
2017-08-18 | Map-based cloning of the gene Pm21 that confers broad spectrum resistance to wheat powdery mildew | Common wheat (Triticum aestivum L.) is one of the most important cereal
crops. Wheat powdery mildew caused by Blumeria graminis f. sp. tritici (Bgt) is
a continuing threat to wheat production. The Pm21 gene, originating from
Dasypyrum villosum, confers high resistance to all known Bgt races and has been
widely applied ... | 1708.05475v1 |
2021-04-27 | Unified description of resistivity and thermopower of Pr$_2$Ir$_2$O$_7$: possible influence of crystal field excitation in a Kondo lattice | We present experimental evidence of incoherent Kondo scattering as the source
of resistivity minima in bulk polycrystalline and nanocrystalline
Pr$_2$Ir$_2$O$_7$. The temperature dependence of thermopower shows a positive
maximum at high temperature followed by a negative minimum at low temperature,
with the sign inver... | 2105.05149v1 |
2022-05-03 | On the problem of projectile motion in a medium with quadratic resistance | A classic problem of the motion of a projectile thrown at an angle to the
horizon in a medium with a quadratic resistance law is studied. An approximate
analytical solution of the equations of projectile motion is presented, which
has a high accuracy. The proposed formulas are universal, that is, they can be
used for a... | 2205.01564v1 |
2013-08-15 | Structural and optical investigations of the iron-chalcogenide superconductor Fe$_{1.03}$Se$_{0.5}$Te$_{0.5}$ under high pressure | Iron-chalcogenide superconductor Fe$_{1.03}$Se$_{0.5}$Te$_{0.5}$ has been
investigated under high pressure using synchrotron based x-ray diffraction and
mid-infrared reflectance measurements at room temperature. Pressure dependence
of the superconducting transition temperature (T$_c$) of the same sample has
been determ... | 1308.3367v1 |
2016-07-11 | High pressure studies on properties of FeGa3: role of on-site coulomb correlation | High pressure X-ray diffraction measurements have been carried out on the
intermetallic semiconductor FeGa$_3$ and the equation of state for FeGa$_3$ has
been determined. First principles based DFT calculations within the GGA
approximation indicate that although the unit cell volume matches well with the
experimentally... | 1607.02905v2 |
2016-10-24 | Deep Reactive Ion Etched Anti-Reflection Coatings for Sub-millimeter Silicon Optics | Refractive optical elements are widely used in millimeter and sub-millimeter
astronomical telescopes. High resistivity silicon is an excellent material for
dielectric lenses given its low loss-tangent, high thermal conductivity and
high index of refraction. The high index of refraction of silicon causes a
large Fresnel... | 1610.07655v1 |
2020-03-09 | CACTUS: A depleted monolithic active timing sensor using a CMOS radiation hard technology | The planned luminosity increase at the Large Hadron Collider in the coming
years has triggered interest in the use of the particles' time of arrival as
additional information in specialized detectors to mitigate the impact of
pile-up. The required time resolution is of the order of tens of picoseconds,
with a spatial g... | 2003.04102v4 |
2019-02-23 | Pixel detector R&D for the Compact Linear Collider | The physics aims at the proposed future CLIC high-energy linear $e^+ e^-$
collider pose challenging demands on the performance of the detector system. In
particular the vertex and tracking detectors have to combine precision
measurements with robustness against the expected high rates of beam-induced
backgrounds. A spa... | 1902.08752v4 |
2017-05-30 | Structural evolution of CO2 filled pure silica LTA zeolite under high-pressure high-temperature conditions | The crystal structure of CO2 filled pure SiO2 LTA zeolite has been studied at
high pressures and temperatures using synchrotron based x ray powder
diffraction. Its structure consists of 13 CO2 guest molecules, 12 of them
accommodated in the large alpha cages and 1 in the beta cages, giving a
SiO2:CO2 stoichiometric rat... | 1705.10507v1 |
2018-08-22 | Record-High Superconductivity in Niobium-Titanium Alloy | Here we report the observation of extraordinary superconductivity in a
pressurized commercial niobium-titanium alloy. We find that its zero-resistance
superconductivity persists from ambient pressure to the pressure as high as
261.7 GPa, a record high pressure up to which a known superconducting state can
continuously ... | 1808.07215v3 |
2022-09-02 | Ultra-Low Temperature Li/CFx Batteries Enabled by Fast-transport and Anion-pairing Liquefied Gas Electrolytes | Lithium fluorinated carbon is one of the most promising chemistries for
high-energy-density primary energy storage systems in applications where
rechargeability is not required. Though Li/CFx demonstrates high energy density
under ambient conditions, achieving such a high energy density when exposed to
subzero temperat... | 2209.02409v1 |
2023-03-09 | Superconductivity above 70 K observed in lutetium polyhydrides | The binary polyhydrides of heavy rare earth lutetium that shares a similar
valence electron configuration to lanthanum have been experimentally discovered
to be superconductive. The lutetium polyhydrides were successfully synthesized
at high pressure and high temperature conditions using a diamond anvil cell in
combina... | 2303.05117v3 |
2023-04-04 | Ultrathin Stable Ohmic Contacts for High-Temperature Operation of $β$-Ga$_2$O$_3$ Devices | Beta gallium oxide ($\beta$-Ga$_2$O$_3$) shows significant promise in the
high-temperature, high-power, and sensing electronics applications. However,
long-term stable metallization layers for Ohmic contacts at high temperature
present unique thermodynamic challenges. The current most common Ohmic contact
design based ... | 2304.02161v1 |
2023-07-31 | Coexistence of Superconductivity and ferromagnetism in high entropy carbide ceramics | Generally, the superconductivity was expected to be absent in magnetic
systems, but this reception was disturbed by unconventional superconductors,
such as cuprates, iron-based superconductors and recently discovered nickelate,
since their superconductivity is proposed to be related to the
electron-electron interaction... | 2307.16438v1 |
2023-09-09 | High-speed metasurface modulator using critically coupled bimodal plasmonic resonance | Free-space electro-optic (EO) modulators operating at gigahertz and beyond
are attractive for a wide range of emerging applications, including high-speed
imaging, free-space optical communication, microwave photonics, and diffractive
computing. Here we experimentally demonstrate a high-speed plasmonic
metasurface EO mo... | 2309.04835v1 |
2000-07-10 | Comment on "Microwave vortex dissipation of superconducting Nd-Ce-Cu-O epitaxial films in high magnetic fields" | While the electrodynamic treatment of a superconducting thin film by Yeh et
al. [Phys. Rev. B 48, 9861 (1993)] ostensibly has application for the
"thin-film limit," their work is shown to employ bulk-like instead of thin-film
electrodynamics, and as such obtains an ostensible violation of the first law
of thermodynamic... | 0007167v1 |
2000-10-27 | Negative differential resistance in nanotube devices | Carbon nanotube junctions are predicted to exhibit negative differential
resistance, with very high peak-to-valley current ratios even at room
temperature. We treat both nanotube p-n junctions and undoped
metal-nanotube-metal junctions, calculating quantum transport through the
self-consistent potential within a tight-... | 0010456v1 |
2002-05-20 | Resistive Transition Equation of Mixed State | We present a microscopic derivation of the resistive transition equation for
mixed state of superconductors. This form fits the experimental data of MgB2
with parameters in agreement with the prediction of BCS superconductivity. It
also fits the experimental data of high quality untwined YBCO single crystal
but with pa... | 0205407v1 |
2005-04-08 | Photo-excited zero-resistance states in the GaAs/AlGaAs system | The microwave-excited high mobility two-dimensional electron system exhibits,
at liquid helium temperatures, vanishing resistance in the vicinity of $B =
[4/(4j+1)] B_{f}$, where $B_{f} = 2\pi\textit{f}m^{*}/e$, m$^{*}$ is an
effective mass, e is the charge, and \textit{f} is the microwave frequency.
Here, we summarize... | 0504206v1 |
2009-12-09 | 2-D MHD Configurations for Accretion Disks Around Magnetized Stars | We discuss basic features of steady accretion disk morphology around
magnetized compact astrophysical objects. A comparison between the standard
model of accretion based on visco-resistive MHD and the plasma instabilities,
like ballooning modes, triggered by very low value of resistivity, is proposed. | 0912.1721v1 |
2021-06-18 | The effect of viscosity and resistivity on Rayleigh-Taylor instability induced mixing in magnetized high energy density plasmas | This work numerically investigates the role of viscosity and resistivity on
Rayleigh-Taylor instabilities in magnetized high-energy-density (HED) plasmas
for a high Atwood number and high plasma beta regimes surveying across plasma
beta and magnetic Prandtl numbers. The numerical simulations are performed
using the vis... | 2106.10391v2 |
2003-03-20 | Current-induced phase control in charged-ordered Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 crystals | Single crystals of Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 show current-induced
insulator-metal transitions at low temperatures. In addition, the
charge-ordering transition temperature decreases with increasing current. The
electroresistive ratio, defined as r0.5/rI where r0.5 is the resistivity at a
current of 0.5 mA and rI... | 0303407v1 |
2003-07-22 | Temperature Dependence of Resistivity of $Sr_2CoMoO_{6-δ}$ Films | We investigate the temperature dependence of the resistivity and
magnetoresistance of a polycrystalline $Sr_2CoMoO_{6-\delta}$ film deposited on
(100)-$SrTiO_3$ substrate prepared by the pulsed laser deposition method. X-ray
diffraction, Raman and magnetoresistance results demonstrate clearly the
coexistence of a ferro... | 0307527v2 |
2005-02-13 | Transport properties in correlated systems: An analytical model | Several studies have so far investigated transport properties of strongly
correlated systems. Interesting features of these materials are the lack of
resistivity saturation well beyond the Mott-Ioffe-Regel limit and the scaling
of the resistivity with the hole density in underdoped cuprates. Due to the
strongly correla... | 0502297v3 |
2005-08-05 | Is ZrB12 two gap superconductor? | We report the measurements of the temperature dependence of the resistivity,
\rho(T), magnetic penetration depth,\lambda(T) the lower, Hc1(T), and upper,
Hc2(T), critical magnetic fields, for single crystals of dodecaboride ZrB12,
diboride ZrB2 and thin films of diboride MgB2. We observe a number of
deviations from con... | 0508151v2 |
2005-10-05 | Equipartition of Current in Parallel Conductors on Cooling Through the Superconducting Transition | Our experiments show that for two or more pieces of a wire, of different
lengths in general, combined in parallel and connected to a dc source, the
current ratio evolves towards unity as the combination is cooled to the
superconducting transition temperature Tc, and remains pinned at that value
below it. This re-distri... | 0510099v3 |
2006-04-06 | Giant magneto-impedance in Ag-doped La0.7Sr0.3MnO3 | The resistive and reactive parts of the magneto-impedance of sintered
ferromagnetic samples of La0.7Sr0.3-xAgxMnO3 (x = 0.05, 0.25) have been
measured at room temperature (<Tc) over frequency interval 1KHz to 15MHz and in
presence of magnetic field up to 4KOe. The field dependence of relative change
in resistance is sm... | 0604181v3 |
2007-09-12 | Thermal Design of Power Semiconductor Modules for Mobile Communication Systems | We will describe the thermal performance of power semiconductor module, which
consists of hetero-junction bipolar transistors (HBTs), for mobile
communication systems. We calculate the thermal resistance between the HBT
fingers and the bottom surface of a multi-layer printed circuit board (PCB)
using a finite element m... | 0709.1879v1 |
2007-09-26 | Influence of Zeeman splitting and thermally excited polaron states on magneto-electrical and magneto-thermal properties of magnetoresistive polycrystalline manganite La_{0.8}Sr_{0.2}MnO_3 | Some possible connection between spin and charge degrees of freedom in
magneto-resistive manganites is investigated through a thorough experimental
study of the magnetic (AC susceptibility and DC magnetization) and transport
(resistivity and thermal conductivity) properties. Measurements are reported in
the case of wel... | 0709.4210v1 |
2008-11-12 | Slow Dynamics in Hard Condensed Matter: A Case Study of the Phase Separating System NdNiO$_3$ | We report the time dependent response of electrical resistivity in the
non-magnetic perovskite oxide NdNiO$_3$ in its phase separated state and
provide a physical explanation of the observations. We also model the system
and do an accurate Monte Carlo simulation of the observed behavior. While
cooling a phase separatio... | 0811.1836v1 |
2009-04-06 | Superconductivity in Ti-doped Iron-Arsenide Compound Sr4Cr0.8Ti1.2O6Fe2As2 | Superconductivity was achieved in Ti-doped iron-arsenide compound
Sr4Cr0.8Ti1.2O6Fe2As2 (abbreviated as Cr-FeAs-42622). The x-ray diffraction
measurement shows that this material has a layered structure with the space
group of \emph{P4/nmm}, and with the lattice constants a = b = 3.9003 A and c =
15.8376 A. Clear diama... | 0904.0972v3 |
2010-01-15 | Domain Wall Resistance in Perpendicular (Ga,Mn)As: dependence on pinning | We have investigated the domain wall resistance for two types of domain walls
in a (Ga,Mn)As Hall bar with perpendicular magnetization. A sizeable positive
intrinsic DWR is inferred for domain walls that are pinned at an etching step,
which is quite consistent with earlier observations. However, much lower
intrinsic do... | 1001.2631v2 |
2010-11-03 | A semiquantitative approach to the impurity-band-related transport properties of GaMnAs nanolayers | We investigate the spin-polarized transport of GaMnAs nanolayers in which a
ferromagnetic order exists below a certain transition temperature. Our
calculation for the self-averaged resistivity takes into account the existence
of an impurity band determining the extended ("metallic" transport) or
localized (hopping by t... | 1011.1006v1 |
2011-06-30 | The effect of changing electrode metal on solution-processed flexible titanium dioxide memristors | Flexible solution processed memristors show different behaviour dependent on
the choice of electrode material. Use of gold for both electrodes leads to
switchable WORM (Write Once Read Many times) resistive devices. Use of
aluminium for both electrodes increases the richness of behaviour allowing both
curved and triang... | 1106.6293v2 |
2011-12-12 | Realization of the Switching Mechanism in Resistance Random Access Memory (RRAMTM) Devices: Structural and Electronic Properties Affecting Electron Conductivity in Halfnium Oxide-Electrode System through First Principles Calculations | Resistance Random Access Memory (RRAMTM) device, with its electrically
induced nanoscale resistive switching capacity, has been gaining considerable
attention as future non-volatile memory device. Here, we propose a mechanism of
switching based on oxygen vacancy migration-driven change in electronic
properties of the t... | 1112.2500v1 |
2012-11-21 | Low Resistance GaN/InGaN/GaN Tunnel Junctions | Enhanced interband tunnel injection of holes into a PN junction is
demonstrated using P-GaN/InGaN/N-GaN tunnel junctions with a specific
resistivity of 1.2 X 10-4 {\Omega} cm2. The design methodology and
low-temperature characteristic of these tunnel junctions is discussed, and
insertion into a PN junction device is de... | 1211.4905v2 |
2013-06-04 | Bipolar electrical switching in metal-metal contacts | Electrical switching has been observed in carefully designed
metal-insulator-metal devices built at small geometries. These devices are also
commonly known as memristors and consist of specific materials such as
transition metal oxides, chalcogenides, perovskites, oxides with valence
defects, or a combination of an ine... | 1306.0942v2 |
2013-10-08 | Mechanism for Radiation Damage Resistance in Yttrium Oxide Dispersion Strengthened Steels | ODS steels based on yttrium oxide have been suggested as potential fusion
reactor wall materials due to their observed radiation resistance properties.
Presumably this radiation resistance can be related to the interaction of the
particle with vacancies,self-interstitial atoms (SIAs) and other radiation
damage debris. ... | 1310.2061v1 |
2014-02-21 | Simultaneous Extraction of Charge Density Dependent Mobility and Variable Contact Resistance from Thin Film Transistors | A model for the extraction of the charge density dependent mobility and
variable contact resistance in thin film transistors is proposed by performing
a full derivation of the current-voltage characteristics both in the linear and
saturation regime of operation. The calculated values are validated against the
ones obta... | 1402.5241v1 |
2014-02-22 | Influence of gas ambient on charge writing at the LaAlO3/SrTiO3 heterointerface | We investigated the influences charge writing on the surface work function
and resistance of the LaAlO3/SrTiO3 (LAO/STO) heterointerface in several gas
environments (air, O2, N2, and H2/N2). Charge writing decreased the surface
work function and resistance of the LAO/STO sample quite a lot in air but
slightly in O2.The... | 1402.5479v1 |
2014-07-07 | Influence of surfactants on the electrical resistivity and thermopower of Ni nanoparticles | Compacted pellets of nanocrystalline nickel (NC-Ni) of average particle size
ranging from 18 to 33 nm were prepared using a variety of surfactants. They
were characterized well and were studied on the influence of the surfactants on
the electrical resistivity and thermopower in the temperature range 5 to 300 K.
It was ... | 1407.1705v2 |
2014-12-15 | Antagonistic in-plane resistivity anisotropies from competing fluctuations in underdoped cuprates | One of the prime manifestations of an anisotropic electronic state in
underdoped cuprates is the in-plane resistivity anisotropy
$\Delta\rho\equiv(\rho_{a}-\rho_{b})/\rho_{b}$. Here we use a
Boltzmann-equation approach to compute the contribution to $\Delta\rho$ arising
from scattering by anisotropic charge and spin fl... | 1412.4745v2 |
2015-01-26 | Granularity Controlled Non-Saturating Linear Magneto-resistance in Topological Insulator Bi2Te3 Films | We report on the magneto-transport properties of chemical vapor deposition
grown films of interconnected Bi2Te3 nanoplates. Similar to many other
topological insulator (TI) materials, these granular Bi2Te3 films exhibit a
linear magneto-resistance (LMR) effect which has received much recent
attention. Studying samples ... | 1501.06497v2 |
2015-08-20 | Atomic Diffusion in the Surface State of Mott Insulator NiS2 | We present resistivity measurements of Mott insulator NiS2 single crystals
after heat treatment. We find a strong increase of the low temperature
resistivity that relaxes back towards the pristine behaviour over several days
with a time constant of 45 h at room temperature. The low temperature
resistivity has previousl... | 1508.05020v1 |
2016-11-12 | Thermal boundary resistance from transient nanocalorimetry: a multiscale modeling approach | The Thermal Boundary Resistance at the interface between a nanosized Al film
and an Al_{2}O_{3} substrate is investigated at an atomistic level. A room
temperature value of 1.4 m^{2}K/GW is found. The thermal dynamics occurring in
time-resolved thermo-reflectance experiments is then modelled via macro-physics
equations... | 1611.04042v1 |
2018-01-11 | Forbidden Backscattering and Resistance Dip in the Quantum Limit as a Signature for Topological Insulators | Identifying topological insulators and semimetals often focuses on their
surface states, using spectroscopic methods such as angle-resolved
photoemission spectroscopy or scanning tunneling microscopy. In contrast,
studying the topological properties of topological insulators from their
bulk-state transport is more acce... | 1801.03617v3 |
2018-02-28 | Integration of external electric fields in molecular dynamics simulation models for resistive switching devices | Resistive switching devices emerged a huge amount of interest as promising
candidates for non-volatile memories as well as artificial synapses due to
their memristive behavior. The main physical and chemical phenomena which
define their functionality are driven by externally applied voltages, and the
resulting electric... | 1802.10590v4 |
2018-03-07 | Modelling the longitudinal intensity pattern of diffraction resistant beams in stratified media | In this paper, we study the propagation of the Frozen Wave type beams through
non-absorbing stratified media and develop a theoretical method capable to
provide the desired spatially shaped diffraction resistant beam in the last
material medium. In this context, we also develop a matrix method to deal with
stratified m... | 1803.03529v1 |
2019-08-22 | Non-Thermal Resistive Switching in Mott Insulators | Resistive switching can be achieved in a Mott insulator by applying
current/voltage, which triggers an insulator-metal transition (IMT). This
phenomenon is key for understanding IMT physics and developing novel memory
elements and brain-inspired technology. Despite this, the roles of electric
field and Joule heating in... | 1908.08555v1 |
2019-06-06 | Training large-scale ANNs on simulated resistive crossbar arrays | Accelerating training of artificial neural networks (ANN) with analog
resistive crossbar arrays is a promising idea. While the concept has been
verified on very small ANNs and toy data sets (such as MNIST), more
realistically sized ANNs and datasets have not yet been tackled. However, it is
to be expected that device m... | 1906.02698v1 |
2020-11-03 | Thermodynamically Induced Transport Anomaly in Dilute Metals ZrTe$_5$ and HfTe$_5$ | A 40-year-old puzzle in transition metal pentatellurides ZrTe$_5$ and
HfTe$_5$ is the anomalous peak in the temperature dependence of the
longitudinal resistivity, which is accompanied by sign reverses of the Hall and
Seebeck coefficients. We give a plausible explanation for these phenomena
without assuming any phase t... | 2011.01952v2 |
2020-11-13 | Ab initio screening of metallic MAX ceramics for advanced interconnect applications | The potential of a wide range of layered ternary carbide and nitride MAX
phases as conductors in interconnect metal lines in advanced CMOS technology
nodes has been evaluated using automated first principles simulations based on
density functional theory. The resistivity scaling potential of these
compounds, i.e. the s... | 2011.06902v2 |
2020-12-02 | Interfacial studies in CNT fibre/TiO$_{2}$ photoelectrodes for efficient H$_{2}$ production | An attractive class of materials for photo(electro)chemical reactions are
hybrids based on semiconducting metal oxides and nanocarbons (e.g. carbon
nanotubes (CNT), graphene), where the nanocarbon acts as a highly-stable
conductive scaffold onto which the nanostructured inorganic phase can be
immobilised; an architectu... | 2012.01109v1 |
2021-04-26 | Role of electron and ion irradiation in a reliable lift-off process with e-beam evaporation and a bilayer PMMA resist system | This paper addresses issues related to cracking and blisters in deposited
films encountered in a lift-off process with electron beam evaporation and a
bilayer PMMA resist system. The impact of charged particles, i.e. electrons and
ions, is investigated using an electron beam evaporation chamber equipped with
ring-magne... | 2104.12452v1 |
2021-05-24 | Spatio-temporal dynamics of voltage-induced resistance transition in the double-exchange model | We present multi-scale dynamical simulations of voltage-induced
insulator-to-metal transition in the double exchange model, a canonical example
of itinerant magnet and correlated electron systems. By combining
nonequilibrium Green's function method with large-scale Landau-Lifshitz-Gilbert
dynamics, we show that the tra... | 2105.11076v2 |
2021-10-14 | Filamentary superconductivity of resistively-switched strontium titanate | SrTiO$_3$, although a wide gap insulator, has long been known to become
metallic and superconducting at extremely low doping levels. This has given
rise to questions concerning the coexistence or interdependence of metallicity,
superconductivity, and the material's polar properties. This issue becomes
especially intrig... | 2110.07230v1 |
2022-01-20 | Algorithm for constructing customized quantized resistances in graphene $p-n$ junctions | An algorithm is introduced for predicting quantized resistances in graphene
p-n junction devices that utilize more than a single entry and exit point for
electron flow. Depending on the configuration of an arbitrary number of
terminals, electrical measurements yield fractional multiples of the typical
quantized Hall re... | 2201.08290v1 |
2022-12-08 | Terahertz photoconductivity in bilayer graphene transistors: evidence for tunneling at gate-induced junctions | Photoconductivity of novel materials is the key property of interest for
design of photodetectors, optical modulators, and switches. Despite the
photoconductivity of most novel 2d materials has been studied both
theoretically and experimentally, the same is not true for 2d p-n junctions
that are necessary blocks of mos... | 2212.04378v1 |
2024-03-17 | Resistive and ballistic phonon transport in $β$-Ga$_2$O$_3$ | The anisotropic thermal conductivity and the phonon mean free path (mfp) in
monoclinic $\beta$-Ga$_2$O$_3$ single crystals and homoepitaxial films of
several $\mu$m were determined using the 3$\omega$-method in the temperature
range from 10K-300 K. The measured effective thermal conductivity of both,
single crystal and... | 2403.11341v1 |
2004-05-05 | Low temperature field-effect in crystalline organic material | Molecular organic materials offer the promise of novel electronic devices but
also present challenges for understanding charge transport in narrow band
systems. Low temperature studies elucidate fundamental transport processes. We
report the lowest temperature field effect transport results on a crystalline
oligomeric ... | 0405077v1 |
2022-07-22 | Fabrication of highly resistive NiO thin films for nanoelectronic applications | Thin films of the prototypical charge transfer insulator NiO appear to be a
promising material for novel nanoelectronic devices. The fabrication of the
material is challenging however, and mostly a p-type semiconducting phase is
reported. Here, the results of a factorial experiment are presented that allow
optimization... | 2207.10837v1 |
2022-11-15 | Nucleation and development of multiple cracks in thin composite fibers | We study the nucleation and development of crack patterns in thin composite
fibers under tension in this work. A fiber comprises an elastic core and an
outer layer of a weaker brittle material. In recent tensile experiments on such
composites, multiple cracks were observed to develop simultaneously on the
outer layer. ... | 2212.02232v1 |
2024-05-19 | Modes, Bounds, and Synthesis of Optimal Electromagnetic Scatterers | This paper presents an optimal synthesis of material distributions in
obstacles for maximal extinction, scattering, or absorption. The material
synthesis is based on an explicit construction utilizing the current
distribution derived from physical bounds excited from the far-field. The
bounds are expressed in radiation... | 2405.11499v1 |
2002-10-29 | Electrical anisotropy in high-Tc granular superconductors in a magnetic field | We propose an analytical model devoted to explain the anisotropy of the
electrical resistance observed below the critical temperature in granular
high-Tc superconductors submitted to a magnetic field H. Reported experimental
results obtained on a YBCO sample show that the superconducting transition
occurs in two stages... | 0210648v1 |
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