publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2021-03-18 | Giant spin Hall angle in the Heusler alloy Weyl ferromagnet Co$_2$MnGa | Weyl semimetals are playing a major role in condensed matter physics due to
exotic topological properties, and their coexistence with ferromagnetism may
lead to enhanced spin-related phenomena. Here, the inverse spin Hall effect
(ISHE) in the ferromagnetic Weyl-semimetal Heusler alloy Co$_2$MnGa was
investigated at roo... | 2103.10188v1 |
2021-04-06 | Relationship between the TC of smart meta-superconductor Bi(Pb)SrCaCuO and inhomogeneous phase content | A smart meta-superconductor Bi(Pb)SrCaCuO (B(P)SCCO) may increase the
critical transition temperature (TC) of B(P)SCCO by electroluminescence (EL)
energy injection of inhomogeneous phases. However, the increase amplitude
{\Delta}TC ({\Delta}TC=TC-T(C,pure)) of TC is relatively small. In this study,
a smart meta-superco... | 2104.02229v1 |
2021-05-12 | Superconducting diode effect via conformal-mapped nanoholes | A superconducting diode is an electronic device that conducts supercurrent
and exhibits zero resistance primarily for one direction of applied current.
Such a dissipationless diode is a desirable unit for constructing electronic
circuits with ultralow power consumption. However, realizing a superconducting
diode is fun... | 2105.05456v1 |
2021-07-01 | Dopant-segregation to grain boundaries controls electrical conductivity of n-type NbCo(Pt)Sn half-Heusler alloy mediating thermoelectric performance | Science-driven design of future thermoelectric materials requires a deep
understanding of the fundamental relationships between microstructure and
transport properties. Grain boundaries in polycrystalline materials influence
the thermoelectric performance through the scattering of phonons or the
trapping of electrons d... | 2107.00326v1 |
2021-07-10 | Effect of characteristic size on the collective phonon transport in crystalline GeTe | We study the effect of characteristic size variation on the phonon thermal
transport in crystalline GeTe for a wide range of temperatures using the
first-principles density-functional method coupled with the kinetic collective
model approach. The characteristic size dependence of phonon thermal transport
reveals an int... | 2107.04731v1 |
2021-07-23 | Few-layer antimonene electrical properties | Antimonene -- a single layer of antimony atoms -- and its few layer forms are
among the latest additions to the 2D mono-elemental materials family. Numerous
predictions and experimental evidence of its remarkable properties including
(opto)electronic, energetic or biomedical, among others, together with its
robustness ... | 2107.11218v1 |
2021-07-26 | Pressure-driven electronic and structural phase transition in intrinsic magnetic topological insulator MnSb2Te4 | Intrinsic magnetic topological insulators provide an ideal platform to
achieve various exciting physical phenomena. However, this kind of materials
and related research are still very rare. In this work, we reported the
electronic and structural phase transitions in intrinsic magnetic topological
insulator MnSb2Te4 dri... | 2107.12071v1 |
2021-07-26 | Nitrogen-doped graphene based triboelectric nanogenerators | Harvesting all sources of available clean energy is an essential strategy to
contribute to healing current dependence on non-sustainable energy sources.
Recently, triboelectric nanogenerators (TENGs) have gained visibility as new
mechanical energy harvester offering a valid alternative to batteries, being
particularly ... | 2107.12114v1 |
2021-09-19 | Float, borosilicate and tellurites as cover glasses in Si photovoltaics: optical properties and performances under sunlight | One of the most significant materials in a solar panel is the glass, which
provides transparency, UV protection as well as mechanical and chemical
resistance. In this work, we describe the production of prototypes of four
solar modules made using borosilicate, zinc-tellurite, Pr$^{3+}$ doped
zinc-tellurite, and float g... | 2109.09116v3 |
2021-09-29 | Mechanical Properties and Nanostructure of Monolithic Zeolitic Imidazolate Frameworks: A Nanoindentation, Nanospectroscopy and Finite-Element Study | The synthesis of metal-organic frameworks (MOFs) in a monolithic morphology
is a promising way to achieve the transition of this class of materials from
academia to industrial applications. The sol-gel process has been widely
employed to produce MOF monoliths. It is relatively cheap and simple compared
to other techniq... | 2109.14670v1 |
2021-09-30 | Electronic and Thermal Properties of $\text{GeTe/Sb}_{2}\text{Te}_{3}$ Superlattices by ab-initio Approach: Impact of Van der Waals Gaps on Vertical Lattice Thermal Conductivity | In the last decade, several works have focused on exploring the material and
electrical properties of $\text{GeTe/Sb}_{2}\text{Te}_{3}$ superlattices (SLs)
in particular because of some first device implementations demonstrating
interesting performances such as fast switching speed, low energy consumption,
and non-vola... | 2109.15168v2 |
2021-10-01 | A general isogeometric finite element formulation for rotation-free shells with in-plane bending of embedded fibers | This paper presents a general, nonlinear isogeometric finite element
formulation for rotation-free shells with embedded fibers that captures
anisotropy in stretching, shearing, twisting and bending -- both in-plane and
out-of-plane. These capabilities allow for the simulation of large sheets of
heterogeneous and fibrou... | 2110.00460v3 |
2021-10-15 | Ground state of Ce$_{3}$Bi$_{4}$Pd$_{3}$ unraveled by hydrostatic pressure | Noncentrosymmetric Ce$_{3}$Bi$_{4}$Pd$_{3}$ has attracted a lot of attention
as a candidate for strongly correlated topological material, yet its
experimental ground state remains a matter of contention. Two conflicting
scenarios have emerged from a comparison to prototypical Kondo insulator
Ce$_{3}$Bi$_{4}$Pt$_{3}$: e... | 2110.08230v1 |
2021-11-16 | Interpreting Angle Dependent Magnetoresistance in Layered Materials: Application to Cuprates | The evolution of the low temperature electronic structure of the cuprate
metals from the overdoped to the underdoped side has recently been addressed
through Angle-Dependant Magneto-Resistance (ADMR) experiments in
La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$. The results show a striking difference
between hole dopings $p = 0.2... | 2111.08740v2 |
2022-01-06 | Optical properties of Au-Hf thin films | The optical properties of thin films of intermetallic Au$_{3}$Hf were
experimentally investigated for the first time, which display clear plasmonic
properties in the optical and near infrared region with negative permittivity.
In contrast to similar alloys, such as films of Au$_{3}$Zr, the films express
more negative $... | 2201.02163v1 |
2022-03-31 | Thermally enhanced photoluminescence and temperature sensing properties of Sc$_2$W$_3$O$_{12}$:Eu$^{3+}$ phosphors | Currently,lanthanide ions doped luminescence materials applying as optical
thermometers have arose much concern. Basing on the different responses of two
emissions to temperature, the fluorescence intensity ratio (FIR) technique can
be executed and further estimate the sensitivities to assess the optical
thermometry pe... | 2203.16888v1 |
2022-04-19 | Cell barrier characterization in transwell inserts by electrical impedance spectroscopy | We describe an impedance-based method for cell barrier integrity testing. A
four-electrode electrical impedance spectroscopy (EIS) setup can be realized by
simply connecting a commercial chopstick-like electrode (STX-1) to a
potentiostat allowing monitoring cell barriers cultivated in transwell inserts.
Subsequent elec... | 2204.08886v1 |
2022-04-25 | Substrate-Dependence of Monolayer MoS$_2$ Thermal Conductivity and Thermal Boundary Conductance | The thermal properties of two-dimensional (2D) materials, like MoS$_2$, are
known to be affected by interactions with their environment, but this has
primarily been studied only with SiO$_2$ substrates. Here, we compare the
thermal conductivity (TC) and thermal boundary conductance (TBC) of monolayer
MoS$_2$ on amorpho... | 2204.11381v1 |
2022-05-23 | Spatial stress correlations in strong colloidal gel | In this work, we systematically investigate for the first time the nature of
stress correlations in soft colloidal gel materials which support tensile and
compressive forces as well as finite rolling torque, as a function of system
pressure. Similar to previous studies on frictional granular matter with only
compressiv... | 2205.11575v1 |
2022-07-06 | Elastoresistivity in the incommensurate charge density wave phase of BaNi$_{\textrm{2}}$(As$_{\textrm{1-x}}$P$_{\textrm{x}}$)$_{\textrm{2}}$ | Electronic nematicity, the breaking of the crystal lattice rotational
symmetry by the electronic fluid, is a fascinating quantum state of matter.
Recently, BaNi$_2$As$_2$ has emerged as a promising candidate for a novel type
of nematicity triggered by charge fluctuations. In this work, we scrutinize the
electronic nema... | 2207.02462v2 |
2022-07-13 | Multi-state data storage in a two-dimensional stripy antiferromagnet implemented by magnetoelectric effect | A promising approach to the next generation of low-power, functional, and
energy-efficient electronics relies on novel materials with coupled magnetic
and electric degrees of freedom. In particular, stripy antiferromagnets often
exhibit broken crystal and magnetic symmetries, which may bring about the
magnetoelectric (... | 2207.05954v1 |
2022-08-09 | Discovery of Superconductivity in Nb$_4$SiSb$_2$ with a V$_4$SiSb$_2$-Type Structure and Implications of Interstitial Doping on its Physical Properties | We report on the discovery, structural analysis, and the physical properties
of Nb$_4$SiSb$_2$ -- a hitherto unknown compound crystallizing in the
V$_4$SiSb$_2$-type structure with the tetragonal space group $I4/mcm$ and unit
cell parameters $a$ = 10.3638(2) $\mathring{\mathrm{A}}$ and $c$ = 4.9151(2)
$\mathring{\mathr... | 2208.04834v1 |
2022-09-07 | Ultrahigh breakdown current density of van der Waals One Dimensional $\mathrm{PdBr_2}$ | One-dimensional (1D) van der Waals (vdW) materials offer nearly defect-free
strands as channel material in the field-effect transistor (FET) devices and
probably, a better interconnect than conventional copper with higher current
density and resistance to electro-migration with sustainable down-scaling. We
report a new... | 2209.03296v6 |
2023-01-27 | A ferromagnetic Eu-Pt surface compound grown below hexagonal boron nitride | One of the fundamental applications for monolayer-thick 2D materials is their
use as protective layers of metal surfaces and in-situ intercalated reactive
materials in ambient conditions. Here we investigate the structural,
electronic, and magnetic properties, as well as the chemical stability in air
of a very reactive... | 2301.11837v2 |
2023-01-31 | Elastic solids with strain-gradient elastic boundary surfaces | Recent works have shown that in contrast to classical linear elastic fracture
mechanics, endowing crack fronts in a brittle solid with Steigmann-Ogden
surface elasticity yields a model that predicts bounded strains at the crack
tips for plane-strain problems. However, a logarithmic singularity is still
present in gener... | 2301.13744v2 |
2023-02-10 | Cryogenic Characteristics of Graphene Composites -- Evolution from Thermal Conductors to Thermal Insulators | The development of cryogenic semiconductor electronics and superconducting
quantum computing requires composite materials that can provide both thermal
conduction and thermal insulation. We demonstrated that at cryogenic
temperatures, the thermal conductivity of graphene composites can be both
higher and lower than tha... | 2302.05524v1 |
2023-02-23 | The influence of crystalline electric field on the magnetic properties of CeCd3X3 (X = P and As) | CeCd$_3$P$_3$ and CeCd$_3$As$_3$ compounds adopt the hexagonal
ScAl$_3$C$_3$-type structure, where magnetic Ce ions on a triangular lattice
order antiferromagnetically below $T_\text{N} \sim$0.42~K. Their crystalline
electric field (CEF) level scheme has been determined by fitting magnetic
susceptibility curves, magnet... | 2302.11714v1 |
2023-03-08 | Spin-valve nature and giant coercivity of a ferrimagnetic spin semimetal Mn$_2$IrGa | Spin semimetals are amongst the most recently discovered new class of
spintronic materials, which exhibit a band gap in one spin channel and
semimetallic feature in the other, thus facilitating tunable spin transport.
Here, we report Mn$_2$IrGa to be a candidate material for spin semimetal along
with giant coercivity a... | 2303.04649v2 |
2023-03-31 | Chiral anomaly and positive longitudinal magnetoresistance in the type-II Dirac semimetals $\it{A}_x$PdTe$_2$ (\textit{A} = Cu, Ag) | The Planar Hall effect (PHE) in topological materials has been a subject of
great interest in recent years. Generally, it is understood to originate from
the chiral-anomaly (CA) induced charge pumping between doubly degenerate Weyl
nodes. However, the occurrence of PHE in the materials with positive and
anisotropic orb... | 2303.18075v2 |
2023-07-11 | Microstructure of a spark-plasma-sintered Fe2VAl-type Heusler alloy for thermoelectric application | The influence of microstructure on thermoelectricity is increasingly
recognized. Approaches for microstructural engineering can hence be exploited
to enhance thermoelectric performance, particularly through manipulating
crystalline defects, their structure, and composition. Here, we focus on a
full-Heusler Fe2VAl-based... | 2307.05051v1 |
2023-08-15 | Phases and magnetism at the microscale in compounds containing nominal Pb10-xCux(PO4)6O | Achieving superconductivity at room temperature could lead to substantial
advancements in industry and technology. Recently, a compound known as Cu-doped
lead-apatite, Pb10-xCux(PO4)6O (0.9 < x < 1.1), referred to as "LK-99", has
been reported to exhibit unusual electrical and magnetic behaviors that appear
to resemble... | 2308.07800v3 |
2023-08-17 | Ferromagnetic and insulating behavior in both half magnetic levitation and non-levitation LK-99 like samples | Finding materials exhibiting superconductivity at room temperature has long
been one of the ultimate goals in physics and material science. Recently,
room-temperature superconducting properties have been claimed in a copper
substituted lead phosphate apatite (Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O, or called
LK-99) [1-3]. Usin... | 2308.11768v2 |
2023-08-26 | Complex Antiferromagnetic Order in the Metallic Triangular Lattice Compound SmAuAl$_4$Ge$_2$ | The compounds $Ln$AuAl$_4$Ge$_2$ ($Ln$ $=$ lanthanide) form in a structure
that features two-dimensional triangular lattices of $Ln$ ions that are stacked
along the crystalline $c$ axis. Together with crystal electric field effects,
magnetic anisotropy, and electron-mediated spin exchange interactions, this
sets the st... | 2308.13945v2 |
2023-09-23 | Radiation Hardness and Defects Activity in PEA2PbBr4 Single Crystals | Metal halide perovskites (MHPs) are low-temperature processable hybrid
semiconductor materials with exceptional performances that are revolutionizing
the field of optoelectronic devices. Despite their great potential, commercial
deployment is hindered by MHPs lack of stability and durability, mainly
attributed to ions ... | 2309.13355v1 |
2023-09-28 | Extraordinary physical properties of superconducting YBa$_{1.4}$Sr$_{0.6}$Cu$_3$O$_6$Se$_{0.51}$ in a multiphase ceramic material | We report on a novel material obtained by modifying pristine YBCO
superconductor in solid phase synthesis via simultaneous partial substitution
of Ba by Sr and O by Se. Simultaneous application of EDX and EBSD confirmed
that Se atoms indeed enter the crystalline lattice cell. The detailed XRD
analysis further confirmed... | 2309.16814v1 |
2023-12-06 | Nonlinear magnetotransport in MoTe${}_2$ | The shape of the Fermi surface influences many physical phenomena in
materials and a growing interest in how the spin-dependent properties are
related to the fermiology of crystals has surged. Recently, a novel
current-dependent nonlinear magnetoresistance effect, known as bilinear
magnetoelectric resistance (BMR), has... | 2312.03405v2 |
2024-01-09 | Coexistence of large anomalous Nernst effect and large coercive force in amorphous ferrimagnetic TbCo alloy films | The Anomalous Nernst Effect (ANE) has garnered significant interest for
practical applications, particularly in energy harvesting and heat flux
sensing. For these applications, it is crucial for the module to operate
without an external magnetic field, necessitating a combination of a large ANE
and a substantial coerci... | 2401.04445v1 |
2024-02-27 | Percolating Superconductivity in Air-Stable Organic-Ion Intercalated MoS2 | When doped into a certain range of charge carrier concentrations, MoS2
departs from its pristine semiconducting character to become a strongly
correlated material characterized by exotic phenomena such as charge density
waves or superconductivity. However, the required doping levels are typically
achieved using ionic-l... | 2402.17328v1 |
2024-03-28 | MaterialsMap: A CALPHAD-Based Tool to Design Composition Pathways through feasibility map for Desired Dissimilar Materials, demonstrated with RSW Joining of Ag-Al-Cu | Assembly of dissimilar metals can be achieved by different methods, for
example, casting, welding, and additive manufacturing (AM). However, undesired
phases formed in liquid-phase assembling processes due to solute segregation
during solidification diminish mechanical and other properties of the processed
parts. In th... | 2403.19084v1 |
2024-04-14 | Role of stress/strain in tailoring the magnetic and transport properties of magnetic thin films and multilayers | Magnetic anisotropy is a fundamental property of magnetic materials that
determines the alignment of the spins along the preferential direction, called
the easy axis of magnetization. Magnetic polycrystalline thin films offer
several advantages over magnetic epitaxial thin films because of fabrication
flexibility, high... | 2405.00049v1 |
2024-05-22 | Nuclear quantum effects in structural and elastic properties of cubic silicon carbide | Silicon carbide, a semiconducting material, has gained importance in the
fields of ceramics, electronics, and renewable energy due to its remarkable
hardness and resistance. In this study, we delve into the impact of nuclear
quantum motion, or vibrational mode quantization, on the structural and elastic
properties of 3... | 2405.13733v1 |
1999-04-27 | The ARGO-YBJ Detector and high energy GRBs | ARGO-YBJ ia a detector optimized to study small size air showers. It consists
of a layer of Resistive Plate counters (RPCs) covering an area of about 6500
m^2 and will be located in the Yangbajing Laboratory (Tibet, China) at 4300 m
above the sea level. ARGO-YBJ will be devoted to a wide range of fundamental
issues in ... | 9904373v1 |
1995-12-12 | Mechanism of thermally activated c-axis dissipation in layered High-T$_c$ superconductors at high fields | We propose a simple model which explains experimental behavior of $c$-axis
resistivity in layered High-T$_c$ superconductors at high fields in a limited
temperature range. It is generally accepted that the in-plane dissipation at
low temperatures is caused by small concentration of mobile pancake vortices
whose diffusi... | 9512097v3 |
1998-03-24 | Magnetic Penetration Depth and Surface Resistance in YBa_2Cu_3O_{7-delta}: New Results for Ultra High Purity Crystals | We have succeeded in growing very high purity (99.995%) YBa_2Cu_3O_{7-delta}
crystals in BaZrO_3 crucibles and have measured Delta-lambda(T) and R_s(T) at 1
GHz in crystals with various oxygen treatments. For an oxygen vacancy level of
delta=0.007, Delta-lambda and R_s essentially reproduce our previous results
and sho... | 9803292v1 |
2000-02-24 | Search for Magnetic Field Induced Gap in a High-Tc Superconductor | Break junctions made of the optimally doped high temperature superconductor
Bi2Sr2Ca2CuO8 with Tc of 90 K has been investigated in magnetic fields up to 12
T, at temperatures from 4.2 K to Tc. The junction resistance varied between
1kOhm and 300kOhm. The differential conductance at low biases did not exhibit a
signific... | 0002376v1 |
2001-06-11 | Microwave absorption by the Josephson-junction network in a low field: A realistic model for ceramic high-temperature superconductor | We discuss the applied magnetic field dependence of the absorption of
microwaves by a 3-dimensional array up to 30x30x30 Josephson junctions with
random parameters including the resistivity, capacity and inductance of each
junction. The numerical simulation results for the networks show characteristic
microwave absorpt... | 0106188v2 |
2002-03-15 | High quality MgB2 thin films in-situ grown by dc magnetron sputtering | Thin films of the recently discovered magnesium diboride (MgB2) intermetalic
superconducting compound have been grown using a magnetron sputtering
deposition technique followed by in-situ annealing at 830 C. High quality films
were obtained on both sapphire and MgO substrates. The best films showed
maximum Tc = 35 K (o... | 0203322v1 |
2002-10-09 | Effects of In-Plane Impurity Substitution in Sr2RuO4 | We report comparative substitution effects of nonmagnetic Ti^(4+) and
magnetic Ir^(4+) impurities for Ru^(4+) in the spin-triplet superconductor
Sr2RuO4. We found that both impurities suppress the superconductivity
completely at a concentration of approximately 0.15%, reflecting the high
sensitivity to translational sy... | 0210190v1 |
2003-02-01 | Higher cumulants of voltage fluctuations in current-biased diffusive contacts | The third and fourth cumulants of voltage in a current-biased diffusive metal
contact of resistance $R$ are calculated for arbitrary temperatures and
voltages using the semiclassical cascade approach. The third cumulant equals
$e^2R^3I/3$ at high temperatures and $4e^2R^3I/15$ at low temperatures, whereas
the fourth cu... | 0302008v3 |
2003-05-20 | High performance temperature controller: application to the excess noise measurements of YBCO thermometers in the transition region | Dedicated read-out electronics was developed for low impedance resistive
thermometers. Using this high performance temperature controller, the
temperature dependence of the excess noise of a YBa2Cu307-d (YBCO) sample in
the superconducting transition was monitored as a function of the current bias.
The noise could reac... | 0305469v2 |
2003-08-31 | Paramagnetic Meissner effect and related dynamical phenomena | The present review is given on the paramagnetic Meissner effect observed in
conventional and ceramic high-Tc superconductors. We discuss two mechanisms
leading to this phenomenon: the d-wave and the flux compensation. It is shown
that the chiral glass phase may occur in granular superconductors possessing
d-wave pairin... | 0309020v1 |
2003-12-15 | Bulk antiferromagnetism in $\bf Na_{0.82}CoO_2$ single crystals | Susceptibility, specific heat, and muon spin rotation measurements on
high-quality single crystals of $\rm Na_{0.82}CoO_2$ have revealed bulk
antiferromagnetism with N\'{e}el temperature $\rm T_N = 19.8 \pm 0.1$ K and an
ordered moment perpendicular to the $\rm CoO_2$ layers. The magnetic order
encompasses nearly 100% ... | 0312376v2 |
2004-12-31 | Numerical evaluation of the dipole-scattering model for the metal-insulator transition in gated high mobility Silicon inversion layers | The dipole trap model is able to explain the main properties of the apparent
metal-to-insulator transition in gated high mobility Si-inversion layers. Our
numerical calculations are compared with previous analytical ones and the
assumptions of the model are discussed carefully. In general we find a similar
behavior but... | 0412762v1 |
2006-07-27 | Microwave photoresistance of a high-mobility two-dimensional electron gas in a triangular antidot lattice | The microwave (MW) photoresistance has been measured on a high-mobility
two-dimensional electron gas patterned with a shallow triangular antidot
lattice, where both the MW-induced resistance oscillations (MIRO) and
magnetoplasmon (MP) resonance are observed superposing on sharp commensurate
geometrical resonance (GR). ... | 0607740v1 |
2006-08-30 | Magnetoresistance oscillations in two-dimensional electron systems under monochromatic and bichromatic radiations | The magnetoresistance oscillations in high-mobility two-dimensional electron
systems induced by two radiation fields of frequencies 31 GHz and 47 GHz, are
analyzed in a wide magnetic-field range down to 100 G, using the
balance-equation approach to magnetotransport for high-carrier-density systems.
The frequency mixing... | 0608655v2 |
1995-01-30 | CHIRAL SYMMETRY RESTORATION AS THE GEORGI VECTOR LIMIT | I discuss recent work done with Gerry Brown on chiral phase transition at
high temperature and/or density described in terms of Georgi's vector limit.
The notion of ``mended symmetry" is suggested to play an important role in
understanding the properties of hadrons in dense and/or hot matter before
reaching the phase t... | 9501403v1 |
1998-07-22 | Carbon Coated Gas Electron Multipliers | Gas electron multipliers (GEMs) have been overcoated with a high resistivity
10e14 - 10e15 Ohms / square amorphous carbon layer. The coating avoids charging
up of the holes and provides a constant gain immediately after switching on
independent of the rate. The gain uniformity across the GEM is improved.
Coating opens ... | 9807039v1 |
2007-04-26 | Quantum Darwinism in quantum Brownian motion: the vacuum as a witness | We study quantum Darwinism -- the redundant recording of information about a
decohering system by its environment -- in zero-temperature quantum Brownian
motion. An initially nonlocal quantum state leaves a record whose redundancy
increases rapidly with its spatial extent. Significant delocalization (e.g., a
Schroeding... | 0704.3615v1 |
2007-06-12 | High-quality all-oxide Schottky junctions fabricated on heavily Nb-doped SrTiO3 substrates | We present a detailed investigation of the electrical properties of epitaxial
La0.7Sr0.3MnO3/SrTi0.98Nb0.02O3 Schottky junctions. A fabrication process that
allows reduction of the junction dimensions to current electronic device size
has been employed. A heavily doped semiconductor has been used as a substrate
in orde... | 0706.1620v2 |
2007-07-09 | High-temperature PbTe diodes | We describe the preparation of high-temperature PbTe diodes. Satisfactory
rectification was observed up to 180-200 K. Two types of diodes, based on a
p-PbTe single crystal, were prepared: (1) by In ion-implantation, and (2) by
thermodiffusion of In. Measurements were carried-out from ~ 10 K to ~ 200 K.
The ion-implante... | 0707.1213v1 |
2008-02-20 | Prospects for a direct dark matter search using high resistivity CCD detectors | The possibility of using CCD detectors in a low threshold direct detection
dark matter search experiment is discussed. We present the main features of the
DECam detectors that make them a good alternative for such an experiment,
namely their low noise and their large depleted volume. The performance of the
DECam CCDs f... | 0802.2872v3 |
2008-08-14 | Synthesis and superconducting properties of the iron oxyarsenide TbFeAsO0.85 | The iron oxyarsenide TbFeAsO0.85 was synthesized by a high-pressure method. A
high-quality polycrystalline sample was obtained and characterized by
measurements of magnetic susceptibility and electrical resistivity. Bulk
superconductivity with Tc of 42 K was clearly established without an F doping
usually conducted to ... | 0808.1948v1 |
2008-09-08 | Pressure Study of Superconducting Oxypnictide LaFePO | Electrical resistivity and magnetic susceptibility measurements under high
pressure were performed on an iron-based superconductor LaFePO. A steep
increase in superconducting transition temperature (Tc) of LaFePO with dTc/dP >
4 K/GPa to a maximum of 8.8 K for P = 0.8 GPa was observed. These results are
similar to isoc... | 0809.1239v1 |
2008-09-29 | High-quality quantum point contact in two-dimensional GaAs (311)A hole system | We studied ballistic transport across a quantum point contact (QPC) defined
in a high-quality, GaAs (311)A two-dimensional (2D) hole system using shallow
etching and top-gating. The QPC conductance exhibits up to 11 quantized
plateaus. The ballistic one-dimensional subbands are tuned by changing the
lateral confinement... | 0809.5047v1 |
2008-10-07 | Superconductivity under high pressure in LaFeAsO | Electrical resistivity measurements under high pressures up to 29 GPa were
performed for oxypnictide compound LaFeAsO. We found a pressure-induced
superconductivity in LaFeAsO. The maximum value of Tc is 21 K at ~12 GPa. The
pressure dependence of the Tc is similar to those of LaFeAsO1-xFx series
reported previously. | 0810.1153v1 |
2009-01-06 | Fantastic Behavior of High-TC Superconductor Junctions: Tunable Superconductivity | Carrier injection performed in oxygen-deficient YBa2Cu3O7(YBCO)
hetero-structure junctions exhibited tunable resistance that was entirely
different with behaviors of semiconductor devices. Tunable superconductivity in
YBCO junctions, increasing over 20 K in transition temperature, has achieved by
using electric process... | 0901.0594v1 |
2009-10-15 | ATLAS Muon Detector Commissioning | The ATLAS muon spectrometer consists of several major components: Monitored
Drift Tubes (MDTs) for precision measurements in the bending plane of the
muons, supplemented by Cathode Strip Chambers (CSC) in the high eta region;
Resistive Plate Chambers (RPCs) and Thin Gap Chambers (TGCs) for trigger and
second coordinate... | 0910.2767v1 |
2010-01-30 | High yield fabrication of chemically reduced graphene oxide field effect transistors by dielectrophoresis | We demonstrate high yield fabrication of field effect transistors (FET) using
chemically reduced graphene oxide (RGO) sheets suspended in water assembled via
dielectrophoresis. The two terminal resistances of the devices were improved by
an order of magnitude upon mild annealing at 200 0C in Ar/H2 environment for 1
hou... | 1002.0086v2 |
2010-02-28 | Theory of acoustic-phonon assisted magnetotransport in 2D electron systems at large filling factors | A microscopic theory of the phonon-induced resistance oscillations in weak
perpendicular magnetic fields is presented. The calculations are based on the
consideration of interaction of two-dimensional electrons with
three-dimensional (bulk) acoustic phonons and take into account anisotropy of
the phonon spectrum in cub... | 1003.0176v1 |
2011-01-19 | Hidden Fermi Liquid: Self-Consistent Theory for the Normal State of High-Tc Superconductors | Hidden Fermi liquid theory explicitly accounts for the effects of Gutzwiller
projection in the t-J Hamiltonian, widely believed to contain the essential
physics of the high-Tc superconductors. We derive expressions for the entire
"strange metal", normal state relating angle-resolved photoemission,
resistivity, Hall ang... | 1101.3609v1 |
2011-03-28 | Superconducting properties of FeSe wires and tapes prepared by gas diffusion technique | Superconducting FeSe in the form of wires and tapes were successfully
fabricated using a novel gas diffusion procedure. Structural analysis by mean
of x-ray diffraction shows that themain phase of tetragonal PbO-type FeSe was
obtained by this synthesis method. The zero resistivity transition temperature
of the FeSe was... | 1103.5304v1 |
2011-06-13 | Resistant estimates for high dimensional and functional data based on random projections | We herein propose a new robust estimation method based on random projections
that is adaptive and, automatically produces a robust estimate, while enabling
easy computations for high or infinite dimensional data. Under some restricted
contamination models, the procedure is robust and attains full efficiency. We
tested ... | 1106.2442v3 |
2011-12-01 | Superconductivity in the doped topological insulator Cu$_x$Bi$_2$Se$_3$ under high pressure | We report a high-pressure single crystal study of the topological
superconductor Cu$_x$Bi$_2$Se$_3$. Resistivity measurements under pressure show
superconductivity is depressed smoothly. At the same time the metallic behavior
is gradually lost. The upper critical field data $B_{c2}(T)$ under pressure
collapse onto a un... | 1112.0102v1 |
2011-12-16 | Pseudogap and local pairs in high-Tc cuprate superconductors | Analysis of the resistivity data recently reported by Kondo et al. [1] for
(Bi,Pb)2(Sr,La)2CuO{6-delta} (Bi2201) single-crystals has been performed within
our model developed to study pseudogap (PG) in high-Tc superconductors (HTS's).
The model is based on an assumption of the existence of local pairs in HTS's at
tempe... | 1112.3812v1 |
2012-02-08 | A proposal to solve some puzzles in semileptonic B decays | Some long-standing problems in the experimental data for semileptonic b -> c
l nu decay rates have resisted attempts to resolve them, despite substantial
efforts. We summarize the issues, and propose a possible resolution, which may
alleviate several of these tensions simultaneously, including the "1/2 vs. 3/2
puzzle" ... | 1202.1834v3 |
2012-02-24 | The 1m3 Semidigital Hadronic Prototype | A high granularity hadronic 1 m3 calorimeter prototype with semi-digital
readout has been designed and built. This calorimeter has been made using
stainless steel as absorber and Glass Resistive Plates Chambers (GRPC) as
active medium, and read out through 1x1 cm2 pads. This prototype aims to
demonstrate that this tech... | 1202.5567v1 |
2012-04-13 | Studies of Vertex Tracking with SOI Pixel Sensors for Future Lepton Colliders | This paper presents a study of vertex tracking with a beam hodoscope
consisting of three layers of monolithic pixel sensors in SOI technology on
high-resistivity substrate. We study the track extrapolation accuracy,
two-track separation and vertex reconstruction accuracy in pion-Cu interactions
with 150 and 300 GeV/c p... | 1204.2910v1 |
2012-05-02 | High-field magnetoresistance revealing scattering mechanisms in graphene | We show that the type of charge carrier scattering significantly affects the
high-field magnetoresistance of graphene nanoribbons. This effect has potential
to be used in identifying the scattering mechanisms in graphene. The results
also provide an explanation for the experimentally found, intriguing
differences in th... | 1205.0492v2 |
2012-05-13 | Modeling high impedance connecting links and cables below 1 Hz | High impedance connecting links and cables are modeled at low frequency in
terms of their impedance to ground and to neigbouring connecting links. The
impedance is usually considered to be the parallel combination of a resistance
and a capacitance. While this model is adequate at moderate and low frequency,
it proved t... | 1205.2848v1 |
2012-07-24 | Van Kampen modes for bunch longitudinal motion | Conditions for existence, uniqueness and stability of bunch steady states are
considered. For the existence uniqueness problem, simple algebraic equations
are derived, showing the result both for the action and Hamiltonian domain
distributions. For the stability problem, van Kampen theory is used. Emerging
of discrete ... | 1207.5826v1 |
2012-11-28 | Homogeneous superconducting phase in TiN film : a complex impedance study | The low frequency complex impedance of a high resistivity 92 {\mu}{\Omega} cm
and 100 nm thick TiN superconducting film has been measured via the
transmission of several high sensitivity GHz microresonators, down to Tc/50.
The temperature dependence of the kinetic inductance follows closely BCS local
electrodynamics, w... | 1211.6678v2 |
2013-05-08 | Evidence for effective mass reduction in GaAs/AlGaAs quantum wells | We have performed microwave photoresistance measurements in high mobility
GaAs/AlGaAs quantum wells and investigated the value of the effective mass.
Surprisingly, the effective mass, obtained from the period of microwave-induced
resistance oscillations, is found to be about 12% lower than the band mass in
GaAs, $\mb$.... | 1305.1814v1 |
2014-06-23 | Control of MTDC Transmission Systems under Local Information | High-voltage direct current (HVDC) is a commonly used technology for
long-distance electric power transmission, mainly due to its low resistive
losses. In this paper a distributed controller for multi-terminal high-voltage
direct current (MTDC) transmission systems is considered. Sufficient conditions
for when the prop... | 1406.5839v2 |
2014-06-27 | Energy measurement with the SDHCAL prototype | The SDHCAL prototype that was completed in 2012 was exposed to beams of
pions, electrons of different energies at the SPS of CERN for a total time
period of 5 weeks. The data are being analyzed within the CALICE Collaboration.
However preliminary results indicate that a highly granular hadronic
calorimeter conceived fo... | 1406.7111v1 |
2014-06-29 | CMS RPC muon detector performance with 2010-2012 LHC data | The muon spectrometer of the CMS (Compact Muon Solenoid) experiment at the
Large Hadron Collider (LHC) is equipped with a redundant system made of
Resistive Plate Chambers and Drift Tube in barrel and RPC and Cathode Strip
Chamber in endcap region. In this paper, the operations and performance of the
RPC system during ... | 1406.7543v1 |
2014-12-08 | Anomalous specific heat behaviour in the quadrupolar Kondo system PrV2Al20 | We have measured the specific heat of PrV$_2$Al$_{20}$ at very low
temperatures, using high quality single crystals with the residual resistivity
ratio ~ 20. The high-quality single crystals exhibit clear double transitions
at $T_{\rm Q} =$ 0.75 K and $T^* =$ 0.65 K. These transitions are clearer and
shift to higher te... | 1412.2583v1 |
2016-02-25 | The quantum phase slip phenomenon in superconducting nanowires with high-impedance environment | Quantum phase slip (QPS) is the particular manifestation of quantum
fluctuations of the order parameter of a current-biased quasi-1D
superconductor. The QPS event(s) can be considered a dynamic equivalent of
tunneling through conventional Josephson junction containing static in space
and time weak link(s). At low tempe... | 1602.07935v1 |
2016-05-07 | Monte-Carlo study of the MRPC prototype for the upgrade of BESIII | A GEANT4-based simulation is developed for the endcap time of flight (ETOF)
upgrade based on multi-gap resistive plate chambers (MRPC) for the BESIII
experiment. The MRPC prototype and the simulation method are described. Using a
full Monte-Carlo simulation, the influence of high voltage and threshold on
time resolutio... | 1605.02155v1 |
2016-10-24 | Compact sorting of optical vortices by means of diffractive transformation optics | The orbital angular momentum (OAM) of light has recently attracted a growing
interest as a new degree of freedom in order to increase the information
capacity of today optical networks both for free-space and optical fiber
transmission. Here we present our work of design, fabrication and optical
characterization of dif... | 1610.07443v1 |
2017-02-22 | Interfacing of High Temperature Z-meter Setup Using Python | In this work, we interface high temperature Z-meter setup to automize the
whole measurement process. A program is built on open source programming
language Python which convert the manual measurement process into fully
automated process without any cost addition. Using this program, simultaneous
measurement of Seebeck ... | 1702.06691v1 |
2017-06-01 | Nonlinear transport by vortex tangles in cuprate high-temperature superconductors | A unified model of vortex tangles is proposed to describe unconventional
transport in cuprate high-temperature superconductors, which not only captures
the fast vortices scenario at low density, but also predicts a novel mechanism
of core-core collisions in dense vortex fluid regime. The theory clarifies the
nature of ... | 1706.00228v1 |
2017-06-20 | Saturation of Strong Electron-Electron Umklapp Scattering at High Temperature | We consider clean metals, at finite temperature, in which the inelastic rate,
$\hbar/ \tau_{ee}$, can become of the order of, or larger, than the band
splitting energy. We show that in suchsystems, contrary to the common
knowledge, the umklapp scattering rate becomes independent of both $\tau_{ee}$
and the temperature ... | 1706.06256v2 |
2018-02-05 | High Kinetic Inductance NbN Nanowire Superinductors | We demonstrate that a high kinetic inductance disordered superconductor can
realize a low microwave loss, non-dissipative circuit element with an impedance
greater than the quantum resistance ($R_Q = h/4e^2 \simeq 6.5k\Omega$). This
element, known as a superinductor, can produce a quantum circuit where charge
fluctuati... | 1802.01723v1 |
2011-07-05 | Deep sub electron noise readout in CCD systems using digital filtering techniques | Scientific CCDs designed in thick high resistivity silicon (Si) are excellent
detectors for astronomy, high energy and nuclear physics, and instrumentation.
Many applications can benefit from CCDs ultra low noise readout systems. The
present work shows how sub electron noise CCD images can be achieved using
digital sig... | 1107.0925v1 |
2013-12-13 | Recent DHCAL Developments | This talk reports on recent progress concerning the development of a Digital
Hadron Calorimeter with Resistive Plate Chambers as active elements. After the
successful testing of a Digital Hadron Calorimeter prototype, the DHCAL, in the
Fermilab and CERN test beams, the DHCAL group is now tackling some of the
remaining ... | 1312.3868v1 |
2015-05-14 | High-pressure and doping studies of the superconducting antiperovskite SrPt3P | We report the results of our investigation of SrPt3P, a recently discovered
strong-coupling superconductor with Tc = 8.4 K, by application of high physical
pressure and by chemical doping. We study hole-doped SrPt3P, which was
theoretically predicted to have a higher Tc, resistively, magnetically, and
calorimetrically.... | 1505.03849v1 |
2016-12-18 | Power nano- and picosecond optoelectronic switches based on high-voltage silicon structures with p-n-junctions. II. Energy efficiency | Energy efficiency of optoelectronic switches based on high-voltage silicon
photodiodes, phototransistors or photothyristors and triggered-on by picosecond
laser pulses has been studied for the first time. For given values of resistive
load, amplitude and duration $t_R$ of voltage pulses it is shown that there
exist opt... | 1701.03412v1 |
2017-01-28 | Point-contact studies of high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$ | Point-contacts formed by the high-temperature superconductor $\rm
YBa_2Cu_3O_{7-\delta}$ prepared by cryochemical technique, and a noble metal Ag
or Cu) are investigated. The maximum value of the energy gap $\Delta\simeq
40~meV$ and the ratio $2\Delta/kT_c\simeq 12$ are obtained. It is found that
along certain crystall... | 1701.08293v1 |
2019-04-23 | Spatio-temporal crop classification of low-resolution satellite imagery with capsule layers and distributed attention | Land use classification of low resolution spatial imagery is one of the most
extensively researched fields in remote sensing. Despite significant
advancements in satellite technology, high resolution imagery lacks global
coverage and can be prohibitively expensive to procure for extended time
periods. Accurately classi... | 1904.10130v1 |
2019-01-06 | Enhanced magnetic ordering in Sm metal under extreme pressure | The dependence of the magnetic ordering temperature To of Sm metal was
determined through four-point electrical resistivity measurements to pressures
as high as 150 GPa. A strong increase in To with pressure is observed above 85
GPa. In this pressure range Sm ions alloyed in dilute concentration with
superconducting Y ... | 1901.01563v1 |
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