publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2020-03-26 | Fermi liquid behavior and colossal magnetoresistance in layered MoOCl2 | A characteristic of a Fermi liquid is the T^2 dependence of its resistivity,
sometimes referred to as the Baber law. However, for most metals, this behavior
is only restricted to very low temperatures, usually below 20 K. Here, we
experimentally demonstrate that for the single-crystal van der Waals layered
material MoO... | 2003.11905v1 |
2020-04-06 | Microscopic Relaxation Channels in Materials for Superconducting Qubits | Despite mounting evidence that materials imperfections are a major obstacle
to practical applications of superconducting qubits, connections between
microscopic material properties and qubit coherence are poorly understood.
Here, we perform measurements of transmon qubit relaxation times $T_1$ in
parallel with spectros... | 2004.02908v1 |
2021-01-23 | Field-effect at electrical contacts to two-dimensional materials | The inferior electrical contact to two-dimensional (2D) materials is a
critical challenge for their application in post-silicon very large-scale
integrated circuits. Electrical contacts were generally related to their
resistive effect, quantified as contact resistance. With a systematic
investigation, this work demonst... | 2101.09487v1 |
2022-05-30 | Mechanistic framework for reduced-order models in soft materials: Application to three-dimensional granular intrusion | Soft materials often display complex behaviors that transition through
apparent solid- and fluid-like regimes. While a growing number of microscale
simulation methods exist for these materials, reduced-order models that
encapsulate the global-scale physics are often desired to predict how external
bodies interact with ... | 2205.14920v3 |
2023-01-27 | Machine-guided Design of Oxidation Resistant Superconductors for Quantum Information Applications | Decoherence in superconducting qubits has long been attributed to two level
systems arising from the surfaces and interfaces present in real devices. A
recent significant step in reducing decoherence was the replacement of
superconducting niobium by superconducting tantalum, resulting in a tripling of
transmon qubit li... | 2301.11543v1 |
2012-08-10 | On the phase diagram of the itinerant helimagnet MnSi: does MnSi become quantum critical ? | We performed a series of resistivity measurements of a MnSi single crystal at
high pressures, created by a piston-cylinder device with a liquid pressure
medium. The form of the resistivity curve at ambient pressure clearly indicates
a first order nature of the magnetic phase transition in MnSi. Application of
high pres... | 1208.2174v1 |
2017-04-12 | High temperature resistivity measured at ν = 5/2 as a predictor of 2DEG quality in the N=1 Landau level | We report a high temperature (T = 0.3K) indicator of the excitation gap
$\Delta_{5/2}$ at the filling factor $ \nu=5/2$ fractional quantum Hall state
in ultra-high quality AlGaAs/GaAs two-dimensional electron gases. As the lack
of correlation between mobility $\mu$ and $\Delta_{5/2}$ has been well
established in previo... | 1704.03794v1 |
2019-08-02 | Realization of Ohmic-contact and velocity saturation in organic field-effect transistors by crystallized monolayer | The contact resistance limits the down-scaling and operating range of OFETs.
With the monolayer (1L) organic crystals and non-destructive
metal/semiconductor interfaces, intrinsic mobility of 12.5 cm2V-1s-1 and Ohmic
contact resistance of 40 ohm-cm were achieved. The on/off ratio maintained at
10^3 even at a small VDS ... | 1908.01032v1 |
2022-11-04 | Relativistic resistive magneto-hydrodynamics code for high-energy heavy-ion collisions | We construct a relativistic resistive magneto-hydrodynamic (RRMHD) numerical
simulation code for high-energy heavy-ion collisions. We split the system of
differential equations into two parts, a non-stiff and a stiff part. For the
non-stiff part, we evaluate the numerical flux using HLL approximated Riemann
solver and ... | 2211.02310v1 |
2022-02-28 | Mg-doping and free-hole properties of hot-wall MOCVD GaN | The hot-wall metal-organic chemical vapor deposition (MOCVD), previously
shown to enable superior III-nitride material quality and high performance
devices, has been explored for Mg doping of GaN. We have investigated the Mg
incorporation in a wide doping range ($2.45\times{10}^{18}~cm^{-3}$ up to
$1.10\times{10}^{20}~... | 2202.13614v1 |
2019-11-21 | Oxidized-monolayer Tunneling Barrier for Strong Fermi-level Depinning in Layered InSe Transistors | In 2D-semiconductor-based field-effect transistors and optoelectronic
devices, metal-semiconductor junctions are one of the crucial factors
determining device performance. The Fermi-level (FL) pinning effect, which
commonly caused by interfacial gap states, severely limits the tunability of
junction characteristics, in... | 1911.09327v1 |
2023-12-11 | Development of travelling heater method for growth of detector grade CdZnTe single crystals | We report on the indigenous design and development of laboratory scale
travelling heater method (THM) system to grow detector grade Cd0.9Zn0.1Te
(CdZnTe) single crystals. THM system mainly consists of two-zone furnace with a
tuneable temperature gradient (30 - 80 C/cm), high precision translation (1 -
25 mm per day) an... | 2312.06233v1 |
2020-09-10 | Water Within a Permanently Shadowed Lunar Crater: Further LCROSS Modeling and Analysis | The 2009 Lunar CRater Observation and Sensing Satellite (LCROSS) impact
mission detected water ice absorption using spectroscopic observations of the
impact-generated debris plume taken by the Shepherding Spacecraft, confirming
an existing hypothesis regarding the existence of water ice in permanently
shadowed regions ... | 2009.05080v1 |
2019-08-03 | Real-time Deep Learning at the Edge for Scalable Reliability Modeling of Si-MOSFET Power Electronics Converters | With the significant growth of advanced high-frequency power converters,
on-line monitoring and active reliability assessment of power electronic
devices are extremely crucial. This article presents a transformative approach,
named Deep Learning Reliability Awareness of Converters at the Edge (Deep
RACE), for real-time... | 1908.01244v1 |
2022-04-29 | Quantitative Prediction of Fracture Toughness $(K_{{\rm I}c})$ of Polymer by Fractography Using Deep Neural Networks | Fracture surfaces provide various types of information about fracture. The
fracture toughness $K_{{\rm I}c}$, which represents the resistance to fracture,
can be estimated using the three-dimensional (3D) information of a fracture
surface, i.e., its roughness. However, this is time-consuming and expensive to
obtain the... | 2204.13912v1 |
2023-06-26 | Elucidating Interfacial Dynamics of Ti-Al Systems Using Molecular Dynamics Simulation and Markov State Modeling | Due to their remarkable mechanical and chemical properties, Ti-Al based
materials are attracting considerable interest in numerous fields of
engineering, such as automotive, aerospace, and defense. With their low
density, high strength, and resistance to corrosion and oxidation, these
intermetallic alloys and compound ... | 2306.14568v2 |
2024-01-17 | Pressure-induced superconductivity in a novel germanium allotrope | High-pressure studies on elements play an essential role in superconductivity
research, with implications for both fundamental science and applications. Here
we report the experimental discovery of surprisingly low pressure driving a
novel germanium allotrope into a superconducting state in comparison to that
for alpha... | 2401.09625v1 |
2012-01-09 | Performances and ageing study of resistive-anodes Micromegas detectors for HL-LHC environment | With the tenfold luminosity increase envisaged at the HL-LHC, the background
(photons, neutrons, ...) and the event pile-up probability are expected to
increase in proportion in the different experiments, especially in the forward
regions like, for instance, the muons chambers of the ATLAS detector. Detectors
based on ... | 1201.1843v1 |
2003-09-01 | Non-equilibrium and non-linear stationary state in thermoelectric materials | Efficiency of thermoelectric materials is characterized by the figure of
merit Z. Z has been believed to be a peculiar material constant. However, the
accurate measurements in the present work reveal that Z has large size
dependence and a non-linear temperature distribution appears as stationary
state in the thermoelec... | 0309016v1 |
2006-11-27 | Comparison of Methods for Characterizing Sound Absorbing Materials | Sound absorbing materials are usually defined by five parameters: open
porosity, static airflow resistivity, tortuosity, and two characteristic
lengths. In recent decades, different methods have been developed in order to
characterize these parameters. These methods may be divided following three
approaches: i) inverse... | 0611259v2 |
2007-08-14 | Preliminary Results on Vibration Damping Properties of Nanoscale-Reinforced Composite Materials | The focus in this paper is an analysis of existing state of the arts directed
toward the development of the next generation of vibration damping systems. The
research work concentrates on an investigation related to
nanoparticles/fibres/tubes-reinforced materials and coatings dynamic
characterization and modeling of th... | 0708.1821v1 |
2018-05-25 | Imaging material functionality through 3D nanoscale tracking of energy flow | The ability of energy carriers to move between atoms and molecules underlies
biochemical and material function. Understanding and controlling energy flow,
however, requires observing it on ultrasmall and ultrafast spatiotemporal
scales, where energetic and structural roadblocks dictate the fate of energy
carriers. Here... | 1805.09982v4 |
2020-03-30 | A bioinspired optically transparent tough glass composite | Glasses have numerous applications due to their exceptional transparency,
however, poor fracture and impact resistance limit their applications as an
engineering material. One relatively recent approach to improve the mechanical
properties of materials is through bio-inspiration. Structural biological
composites such a... | 2003.13863v1 |
2021-04-15 | Towards A Process Model for Co-Creating AI Experiences | Thinking of technology as a design material is appealing. It encourages
designers to explore the material's properties to understand its capabilities
and limitations, a prerequisite to generative design thinking. However, as a
material, AI resists this approach because its properties emerge as part of the
design proces... | 2104.07595v2 |
2022-05-30 | Progress and prospects in the quantum anomalous Hall effect | The quantum anomalous Hall effect refers to the quantization of Hall effect
in the absence of applied magnetic field. The quantum anomalous Hall effect is
of topological nature and well suited for field-free resistance metrology and
low-power information processing utilizing dissipationless chiral edge
transport. In th... | 2205.15226v3 |
2023-07-09 | lcs4Foam -- An OpenFOAM Function Object to Compute Lagrangian Coherent Structures | To facilitate the understanding and to quantitatively assess the material
transport in fluids, a modern characterisation method has emerged in fluid
dynamics in the last decades footed in dynamical systems theory. It allows to
examine the most influential material lines which are called Lagrangian
Coherent Structures (... | 2307.04104v1 |
2023-11-23 | Rate- and temperature-dependent ductile-to-brittle fracture transition: Experimental investigation and phase-field analysis for toffee | The mechanical behaviour of many materials, including polymers or natural
materials, significantly depends on the rate of deformation. As a consequence,
a rate-dependent ductile-to-brittle fracture transition may be observed. For
toffee-like caramel, this effect is particularly pronounced. At room
temperature, this con... | 2311.13869v1 |
2023-01-15 | Inhomogeneous superconductivity onset in FeSe studied by transport properties | Heterogeneous superconductivity onset is a common phenomenon in high-$T_c$
superconductors of both the cuprate and iron-based families. It is manifested
by a fairly wide transition from the metallic to zero-resistance state.
Usually, in these strongly anisotropic materials, superconductivity (SC) first
appears as isola... | 2301.06185v3 |
2023-11-28 | Sputtered NbN Films for Ultrahigh Performance Superconducting Nanowire Single-Photon Detectors | Nowadays ultrahigh performance superconducting nanowire single-photon
detectors are the key elements in a variety of devices from biological research
to quantum communications and computing. Accurate tuning of superconducting
material properties is a powerful resource for fabricating single-photon
detectors with a desi... | 2311.17000v1 |
2009-03-27 | Very High Order $\PNM$ Schemes on Unstructured Meshes for the Resistive Relativistic MHD Equations | In this paper we propose the first better than second order accurate method
in space and time for the numerical solution of the resistive relativistic
magnetohydrodynamics (RRMHD) equations on unstructured meshes in multiple space
dimensions. The nonlinear system under consideration is purely hyperbolic and
contains a ... | 0903.4832v1 |
2019-07-18 | High-performance monolayer MoS2 field-effect transistor with large-scale nitrogen-doped graphene electrodes for Ohmic contact | A finite Schottky barrier and large contact resistance between monolayer MoS2
and electrodes are the major bottlenecks in developing high-performance
field-effect transistors (FETs) that hinder the study of intrinsic quantum
behaviors such as valley-spin transport at low temperature. A gate-tunable
graphene electrode p... | 1907.07883v1 |
2010-10-04 | Defects induced ferromagnetism in Mn doped ZnO | Single phase Mn doped (2 at %) ZnO samples have been synthesized by
solid-state reaction technique. Before the final sintering at 500 C, the mixed
powders have been milled for different milling periods (6, 24, 48 and 96
hours). The grain sizes of the samples are very close to each other (~ 32 \pm 4
nm). However, the de... | 1010.0547v1 |
2013-04-11 | Sign-reversal of the in-plane resistivity anisotropy in iron pnictides | The concept of an electronically-driven breaking of the rotational symmetry
of a crystal, without involving magnetic order, has found experimental support
in several systems, from semiconductor heterostructures and ruthenates, to
cuprate and iron-pnictide superconductors. In the pnictide BaFe$_{2}$As$_{2}$,
such an "el... | 1304.3490v1 |
2013-09-20 | Universal electric-field-driven resistive transition in narrow-gap Mott insulators | One of today's most exciting research frontier and challenge in condensed
matter physics is known as Mottronics, whose goal is to incorporate strong
correlation effects into the realm of electronics. In fact, taming the Mott
insulator-to-metal transition (IMT), which is driven by strong electronic
correlation effects, ... | 1309.5315v1 |
2016-04-23 | Giant magnetoresistance, three-dimensional Fermi surface and origin of resistivity plateau in YSb semimetal | Very strong magnetoresistance and a resistivity plateau impeding low
temperature divergence due to insulating bulk are hallmarks of topological
insulators and are also present in topological semimetals where the plateau is
induced by magnetic field, when time-reversal symmetry (protecting surface
states in topological ... | 1604.06945v3 |
2017-02-23 | Metallicity without quasi-particles in room-temperature strontium titanate | Cooling oxygen-deficient strontium titanate to liquid-helium temperature
leads to a decrease in its electrical resistivity by several orders of
magnitude. The temperature dependence of resistivity follows a rough T$^{3}$
behavior before becoming T$^{2}$ in the low-temperature limit, as expected in a
Fermi liquid. Here,... | 1702.07144v3 |
2018-02-26 | Thermoelectric signatures of the electron-phonon fluid in PtSn4 | In most materials, transport can be described by the motion of distinct
species of quasiparticles, such as electrons and phonons. Strong interactions
between quasiparticles, however, can lead to collective behaviour, including
the possibility of viscous hydrodynamic flow. In the case of electrons and
phonons, an electr... | 1802.09468v1 |
2018-11-23 | Neuromorphic MoS2 memtransistors fabricated by localised helium ion beam irradiation | Two-dimensional layered semiconductors have recently emerged as attractive
building blocks for next-generation low-power non-volatile memories. However,
challenges remain in the controllable sub-micron fabrication of bipolar
resistively switching circuit components from these novel materials. Here we
report on the scal... | 1811.09545v1 |
2019-02-23 | Quasi-ballistic thermal transport across MoS$_2$ thin films | Layered two-dimensional (2D) materials have highly anisotropic thermal
properties between the in-plane and cross-plane directions. In general, it is
thought that cross-plane thermal conductivities ($\kappa_z$) are low, and
therefore c-axis phonon mean free paths (MFPs) are small. Here, we measure
$\kappa_z$ across MoS$... | 1902.08713v2 |
2016-03-16 | Coexistence of topological Dirac fermions in the surface and three-dimensional Dirac cone state in the bulk of ZrTe$_{5}$ single crystal | Although, the long-standing debate on the resistivity anomaly in ZrTe$_{5}$
somewhat comes to an end, the exact topological nature of the electronic band
structure remains elusive till today. Theoretical calculations predicted that
bulk ZrTe$_{5}$ to be either a weak or a strong three-dimensional (3D)
topological insul... | 1603.05175v2 |
2018-12-03 | Effect of structure and composition on the electronic excitation induced amorphization of La$_2$Ti$_{2-x}$Zr$_x$O$_7$ ceramics | Understanding the response of ceramics operating in extreme environments is
of interest for a variety of applications. Ab initio molecular dynamic
simulations have been used to investigate the effect of structure and $B$-site
(=Ti, Zr) cation composition of lanthanum-based oxides (La$_2$$B_2$O$_7$) on
electronic-excita... | 1812.01136v1 |
2019-11-09 | Pulsed laser deposition of single phase n- and p-type Cu2O thin films with low resistivity | Low resistivity (~3-24 mOhm.cm) with tunable n- and p-type phase pure Cu2O
thin films have been grown by pulsed laser deposition at 25-200 0C by varying
the background oxygen partial pressure (O2pp). Capacitance data obtained by
electrochemical impedance spectroscopy was used to determine the conductivity
(n- or p-type... | 1911.03727v2 |
2019-11-13 | Light Intensity Modulated Impedance Spectroscopy (LIMIS) in All-Solid-State Solar Cells at Open Circuit | Potentiostatic impedance spectroscopy (IS) is a well stablished
characterization technique for elucidating the electric resistivity and
capacitive features of materials and devices. In the case of solar cells, by
applying a small voltage perturbation the current signal is recorded and the
recombination processes and de... | 1911.05440v1 |
2020-01-19 | Multilevel Resistance Switching and Enhanced Spin Transition Temperature in Single Molecule Spin Crossover Nanogap Devices | Spin crossover (SCO) molecules are promising bi-stable magnetic switches with
applications in molecular spintronics. However, little is known about the
switching effects of a single SCO molecule when it is confined between two
metal electrodes. Here we examine the switching properties of a
[Fe(III)(EtOSalPet )(NCS)] SC... | 2001.06879v1 |
2020-05-18 | Muiltiscale modeling of electrical conductivity of R-BAPB polyimide + carbon nanotubes nanocomposites | The electrical conductivity of the polyimide R-BAPB polymer filled with
single-wall carbon nanotubes (CNT) with chirality (5,5) is modeled using a
multi-scale approach. The modeling starts with molecular dynamics simulations
of time-dependent fluctuating atomic configurations of polymer filled CNTs
junctions. Then the ... | 2005.09115v1 |
2020-07-09 | Large magnetoresistance and non-zero Berry phase in the nodal-line semimetal MoO2 | We performed calculations of the electronic band structure and the Fermi
surface as well as measured the longitudinal resistivity rhoxx(T,H), Hall
resistivity rhoxy(T,H) and quantum oscillations of the magnetization as a
function of temperature at various magnetic fields for MoO2 with monoclinic
crystal structure. The ... | 2007.04814v1 |
2020-08-20 | Origin of the hump anomalies in the Hall resistance loops of ultrathin SrRuO$_3$/SrIrO$_3$ multilayers | The proposal that very small N\'eel skyrmions can form in SrRuO$_3$/SrIrO$_3$
epitaxial bilayers and that the electric field-effect can be used to manipulate
these skyrmions in gated devices strongly stimulated the recent research of
SrRuO$_3$ heterostructures. A strong interfacial Dzyaloshinskii-Moriya
interaction, co... | 2008.09028v3 |
2021-09-28 | Transport anomalies in the layered compound BaPt4Se6 | We report a layered ternary selenide BaPt4Se6 featuring sesqui-selenide
Pt2Se3 layers sandwiched by Ba atoms. The Pt2Se3 layers in this compound can be
derived from the Dirac-semimetal PtSe2 phase with Se vacancies that form a
honeycomb structure. This structure results in a Pt (VI) and Pt (II)
mixed-valence compound w... | 2109.13902v1 |
2022-05-26 | Is the optical conductivity of heavy fermion strange metals Planckian? | Strange metal behavior appears across a variety of condensed matter settings
and beyond, and achieving a universal understanding is an exciting prospect.
The beyond-Landau quantum criticality of Kondo destruction has had considerable
success in describing the behavior of strange metal heavy fermion compounds,
and there... | 2205.13382v2 |
2023-01-01 | Characteristic lengthscales of the electrically-induced insulator-to-metal transition | Some correlated materials display an insulator-to-metal transition as the
temperature is increased. In most cases this transition can also be induced
electrically, resulting in volatile resistive switching due to the formation of
a conducting filament. While this phenomenon has attracted much attention due
to potential... | 2301.00456v1 |
2023-03-01 | Piezoelectric composite cements: Towards the development of self-powered and self-diagnostic materials | Piezoresistivity is the most commonly used sensing principle in cement-based
smart composites for strain-monitoring applications. Nonetheless, the need for
external electric power to conduct electrical resistivity measurements
restricts the scalability of this technology, especially when implemented in
remote structure... | 2303.00352v1 |
2023-09-13 | Anomalous Hall effect and magnetoresistance in micro-ribbons of the magnetic Weyl semimetal candidate PrRhC2 | PrRhC2 belongs to the rare-earth carbides family whose properties are of
special interest among topological semimetals due to the simultaneous breaking
of both inversion and time-reversal symmetry. The concomitant absence of both
symmetries grants the possibility to tune the Weyl nodes chirality and to
enhance topologi... | 2309.06963v1 |
2024-03-25 | Electrically tunable, rapid spin-orbit torque induced modulation of colossal magnetoresistance in Mn$_3$Si$_2$Te$_6$ nanoflakes | As a quasi-layered ferrimagnetic material, Mn$_3$Si$_2$Te$_6$ nanoflakes
exhibit magnetoresistance behaviour that is fundamentally different from their
bulk crystal counterparts. They offer three key properties crucial for
spintronics. Firstly, at least 10^6 times faster response comparing to that
exhibited by bulk cry... | 2403.16684v1 |
2004-09-16 | Oscillatory and Vanishing Resistance States in Microwave Irradiated 2D Electron Systems | Giant-amplitude oscillations in dc magnetoresistance of a high-mobility
two-dimensional electron system can be induced by millimeterwave irradiations,
leading to zero-resistance states at the oscillation minima. Following a brief
overview of the now well-known phenomenon, this paper reports on aspects of
more recent ex... | 0409409v2 |
2010-02-09 | Pressure-induced high-Tc superconducting phase in FeSe: correlation between anion height and Tc | In this study, we performed high-pressure electrical resistivity measurements
of polycrystalline FeSe in the pressure range of 1-16.0 GPa at temperatures of
4-300 K. A precise evaluation of Tc from zero-resistivity temperatures revealed
that Tc shows a slightly distorted dome-shaped curve, with maximum Tc (30 K) at
6 G... | 1002.1832v2 |
2017-06-22 | Magneto-resistance oscillations induced by high-intensity terahertz radiation | We report on observation of pronounced terahertz radiation-induced
magneto-resistivity oscillations in AlGaAs/GaAs two-dimensional electron
systems, the THz analog of the microwave induced resistivity oscillations
(MIRO). Applying high power radiation of a pulsed molecular laser we
demonstrate that MIRO, so far observe... | 1706.07239v1 |
2019-08-10 | High-resistance YBa2Cu3O7-x grain-boundary Josephson junctions fabricated by electromigration | [100]-tilt grain-boundary YBa2Cu3O7-x (YBCO) junctions are promising for
investigation of macroscopic quantum phenomena in high-Tc Josephson junctions.
However, fabrication of the [100]-tilt grain-boundary YBCO junctions with a
high resistance, which are required to study quantum effects, is difficult
because of a high... | 1908.03784v1 |
1995-01-26 | Study of the band--gap shift in CdS films: Influence of thermal annealing in different atmospheres | We study by photoacoustic spectroscopy the band--gap shift effect of CdS
films. The CdS films were grown by chemical bath deposition and exposed to
different annealing atmospheres over a range of temperature in which the sample
structure is observed to change. We show the band--gap evolution as a function
of temperatur... | 9501125v1 |
1995-07-14 | Spin Conductivity and Spin-Charge Separation in the High $T_c$ Cuprates | We study both the spin and electrical conductivities in models of relevance
to the high $T_c$ cuprates. These models describe metallic states with or
without spin-charge separation. We demonstrate that, given a linear in
temperature dependence of the electrical resistivity, the spin resistivity
should also be linear in... | 9507050v1 |
1997-08-15 | Metal Insulator transition at B=0 in p-SiGe | Observations are reported of a metal-insulator transition in a 2D hole gas in
asymmetrically doped strained SiGe quantum wells. The metallic phase, which
appears at low temperatures in these high mobility samples, is characterised by
a resistivity that decreases exponentially with decreasing temperature. This
behaviour... | 9708118v2 |
1999-07-08 | High-Tc Superconductors in Applied Magnetic Fields Parallel to the CuO Planes: First Order Transition with Slow Onset of Resistivity | The three dimensional uniformly frustrated XY model is used as a model of a
high temperature superconductor in an applied magnetic field parallel to the
CuO-planes. Through Monte Carlo simulations with anisotropy $\eta^2 = 10$ on
large lattices we find evidence for a first order transition. Earlier
simulations and theo... | 9907118v1 |
2001-03-08 | Experimental observation of Frohlich superconductivity in high magnetic fields | Resistivity and irreversible magnetisation data taken within the
high-magnetic-field CDWx phase of the quasi-two-dimensional organic metal
alpha-(BEDT-TTF)2KHg(SCN)4 are shown to be consistent with a field-induced
inhomogeneous superconducting phase. In-plane skin-depth measurements show that
the resistive transition o... | 0103178v3 |
2001-07-26 | Barkhausen-like conductance noise in polycrystalline high Tc superconductors immersed in a slowly varying magnetic field | Analysis of the resistive transition of a polycristalline YBCO specimen
produced by an a.c. magnetic field, reveals the presence of a large conductance
noise signal which is repetitive over subsequent magnetization cycles. It is
shown that the noise arises from avalanche effects produced by the simultaneous
resistive t... | 0107543v1 |
2003-09-05 | Magnetothermal Conductivity of Highly Oriented Pyrolytic Graphite in the Quantum Limit | We report on the magnetic field (0T$ \le B \le 9$T) dependence of the
longitudinal thermal conductivity $\kappa(T,B)$ of highly oriented pyrolytic
graphite in the temperature range 5 K $\le T\le$ 20 K for fields parallel to
the $c-$axis. We show that $\kappa(T,B)$ shows large oscillations in the
high-field region (B > ... | 0309129v1 |
2005-11-08 | Magneto-transport and divergent screening of driven two dimensional electron gas in high Landau levels | In two dimensional electron system in magnetic fields such that the Fermi
energy lies in high Landau levels and driven by microwave $ac$-field a
divergence of the Coulomb screening due to the Ryzhii photocurrent is
predicted. A model of magneto-transport with superposition of long range and
short range disorders is int... | 0511195v1 |
2006-02-10 | Quantum critical phase in BaVS$_3$ | We study the high-pressure metallic phase of high-purity single crystals of
BaVS$_3$ by measuring the temperature, pressure, and magnetic field dependence
of the resistivity. Above the critical pressure of $p_{\rm cr}=1.97$GPa an
extended non-Fermi liquid $p-T$ regime emerges with resistivity exponent $1.5
\le n<2$, cr... | 0602262v1 |
2007-08-16 | Pressure-induced Superconductivity in CaLi2 | A search for superconductivity has been carried out on the hexagonal
polymorph of Laves-phase CaLi2, a compound for which Feng, Ashcroft, and
Hoffmann predict highly anomalous behavior under pressure. No superconductivity
is observed above 1.10 K at ambient pressure. However, high-pressure ac
susceptibility and electri... | 0708.2117v2 |
2011-02-02 | Higher order finite difference schemes for the magnetic induction equations with resistivity | In this paper, we design high order accurate and stable finite difference
schemes for the initial-boundary value problem, associated with the magnetic
induction equation with resistivity. We use Summation-By-Parts (SBP) finite
difference operators to approximate spatial derivatives and a Simultaneous
Approximation Term... | 1102.0480v1 |
2011-10-10 | Non-linear transport phenomena in a two-subband system | We study non-linear transport phenomena in a high-mobility bilayer system
with two closely spaced populated electronic subbands in a perpendicular
magnetic field. For a moderate direct current excitation, we observe
zero-differential-resistance states with a characteristic 1/B periodicity. We
investigate, both experime... | 1110.1953v1 |
2011-12-20 | Phase of phonon-induced resistance oscillations in a high-mobility two-dimensional electron gas | We report on experimental studies of magnetoresistance oscillations that
originate from the resonant interaction of two-dimensional electrons with
thermal transverse-acoustic phonons in very high-mobility GaAs/AlGaAs quantum
wells. We find that the oscillation maxima consistently occur when a frequency
of a phonon with... | 1112.4766v1 |
2013-12-17 | High-temperature thermoelectric properties of novel layered bismuth-sulfide LaO1-xFxBiS2 | We have investigated the high-temperature thermoelectric properties of the
layered compound LaO1-xFxBiS2. The electrical resistivity of LaOBiS2 showed an
anomalous behavior; a metal-semiconductor transition was observed around 270 K.
It was found that the value of the electrical resistivity decreased with F
substitutio... | 1312.4694v1 |
2015-11-16 | Spinless composite fermions in an ultra-high quality strained Ge quantum well | We report on an observation of a fractional quantum Hall effect in an
ultra-high quality two-dimensional hole gas hosted in a strained Ge quantum
well. The Hall resistance reveals precisely quantized plateaus and vanishing
longitudinal resistance at filling factors $\nu = 2/3, 4/3$ and $5/3$. From the
temperature depen... | 1511.05164v1 |
2016-02-18 | Resistive method for measuring the disintegration speed of Prince Rupert's drops | We have successfully applied the resistance grid technique to measure the
disintegration speed in special type of glass objects, widely known as Prince
Rupert's drops. We use a digital oscilloscope and a simple electrical circuit,
glued to the surface of the drops, to detect the voltage changes, corresponding
to the br... | 1602.06801v1 |
2016-05-30 | Comparison of CMS Resistive Plate Chambers performance during LHC RUN-1 and RUN-2 | The Resistive Plate Chambers detector system at the CMS experiment at the LHC
provides robustness and redundancy to the muon trigger. A total of 1056
double-gap chambers cover the pseudo-rapidity region < 1.6. The main detector
parameters and environmental conditions are constantly and closely monitored to
achieve oper... | 1605.09366v1 |
2017-03-01 | Tunable Negative Differential Resistance in Planer Graphene Superlattice Resonant Tunneling Diode | In this paper, we report on the controllable negative differential resistance
(NDR) in a proposed planar graphene superlattice structure. High value of peak
to valley ratio (PVR) is predicted. This is significant because of appearance
of NDR with high PVR at low biases. Our finding is important since beside the
other p... | 1703.00148v1 |
2019-01-09 | Optical conductivity of granular aluminum films near the Mott metal-to-insulator transition | We report measurements of the energy gap of granular aluminum films by THz
spectroscopy. We find that as the grains progressively decouple, the coupling
ratio $2\Delta(0)/k_{B}T_{c}$ increases above the BCS weak coupling ratio
$3.53$, and reaches values consistent with an approach to BCS-BEC crossover for
the high resi... | 1901.02814v2 |
2020-05-26 | CMS RPC Activities During LHC LS-2 | The second LHC long shutdown period (LS2) is an important opportunity for the
CMS Resistive Plate Chambers (RPC) to complete their consolidation and upgrade
projects. The consolidation includes detector maintenance for gas tightness, HV
(high voltage), LV (low voltage) and slow control operation. All services for
the R... | 2005.12534v1 |
2021-02-27 | Spin polarization dynamics in the Bjorken-expanding resistive MHD background | Evolution of spin polarization in the presence of external electric field is
studied for collision energies $\sqrt{s_{\rm NN}}=27\,{\rm GeV}$ and
$\sqrt{s_{\rm NN}}=200\,{\rm GeV}$. The numerical analysis is done in the
perfect-fluid Bjorken-expanding resistive magnetohydrodynamic background and
novel results are repor... | 2103.02592v2 |
2023-01-01 | High-resistivity niobium nitride films for unity-efficiency SMSPDs at telecom wavelengths and beyond | The sensitive element of superconducting single-photon detectors made in the
form of a microstrip promise to resolve significant limitations caused by their
typical design. However, attention should be paid to the problem of
deterioration of the detection efficiency of devices with an increase of the
width of the super... | 2301.00400v1 |
2023-08-18 | Resistive relativistic MHD simulations of astrophysical jets | Aims. The main goal of the present paper is to provide the first systematic
numerical study of the propagation of astrophysical relativistic jets, in the
context of high-resolution shock-capturing resistive relativistic
magnetohydrodynamics (RRMHD) simulations. We aim at investigating different
values and models for th... | 2308.09477v2 |
2015-10-23 | Origin of the turn-on temperature behavior in WTe$_2$ | A hallmark of materials with extremely large magnetoresistance (XMR) is the
transformative 'turn-on' temperature behavior: when the applied magnetic field
$H$ is above certain value, the resistivity versus temperature $\rho(T)$ curve
shows a minimum at a field dependent temperature $T^*$, which has been
interpreted as ... | 1510.06976v2 |
2023-07-20 | Nanoscale imaging of He-ion irradiation effects on amorphous TaO$_x$ toward electroforming-free neuromorphic functions | Resistive switching in thin films has been widely studied in a broad range of
materials. Yet the mechanisms behind electroresistive switching have been
persistently difficult to decipher and control, in part due to their
non-equilibrium nature. Here, we demonstrate new experimental approaches that
can probe resistive s... | 2307.11189v1 |
1998-03-09 | Negative Domain Wall Contribution to the Resistivity of Microfabricated Fe Wires | The effect of domain walls on electron transport has been investigated in
microfabricated Fe wires (0.65 to 20 $\mu m$ linewidths) with controlled stripe
domains. Magnetoresistance (MR) measurements as a function of domain wall
density, temperature and the angle of the applied field are used to determine
the low field ... | 9803102v1 |
1999-01-22 | Magnetoresistance, Micromagnetism, and Domain Wall Scattering in Epitaxial hcp Co Films | Large negative magnetoresistance (MR) observed in transport measurements of
hcp Co films with stripe domains were recently reported and interpreted in
terms of a novel domain wall (DW) scattering mechanism. Here detailed MR
measurements, magnetic force microscopy, and micromagnetic calculations are
combined to elucidat... | 9901245v1 |
2001-10-12 | Large Thermopower in Metallic Oxides: Misfit Cobaltites and Mangano-Ruthenates | Two different kinds of metal transition oxides have been studied for their
large thermopower values. The first one corresponds to the Tl-based misfit
cobaltite which is a hole-doped metal. We demonstrate that the partial
Bi-substitution for Tl in this phase induces an increase of the room
temperature (RT) thermopower (... | 0110270v1 |
2001-11-05 | Large Thermoelectric Power Factor in TiS2 Crystal with Nearly Stoichiometric Composition | A TiS$_{2}$ crystal with a layered structure was found to have a large
thermoelectric power factor.The in-plane power factor $S^{2}/ \rho$ at 300 K is
37.1~$\mu$W/K$^{2}$cm with resistivity ($\rho$) of 1.7 m$\Omega$cm and
thermopower ($S$) of -251~$\mu$V/K, and this value is comparable to that of the
best thermoelectri... | 0111063v1 |
2002-02-07 | Resistivity extrema in double exchange ferromagnetic nondegenerate semiconductors | A version of the magnetoimpurity theory of the colossal magnetoresistance
materials suitable for the double exchange ferromagnetic nondegenerate
semiconductors is presented. It provides an explanation of the nonmonotonic
temperature dependence for the charge carrier density in them when it displays
first a maximum and ... | 0202126v1 |
2002-10-11 | On the residual resistivity near a two dimensional metamagnetic quantum critical point | The behavior of the residual (impurity-dominated) resistivity is computed for
a material near a two dimensional quantum critical point characterized by a
divergent $q=0$ susceptibility. A singular renormalization of the amplitude for
back-scattering of an electron off of a single impurity is found. When the
correlation... | 0210260v1 |
2003-01-27 | Semiconductive and Photoconductive Properties of the Single Molecule Magnets Mn12-Acetate and Fe8Br8 | Resistivity measurements are reported for single crystals of Mn12-Acetate and
Fe8Br8. Both materials exhibit a semiconductor-like, thermally activated
behavior over the 200-300 K range. The activation energy, Ea, obtained for
Mn12-Acetate was 0.37 +/- 0.05 eV, which is to be contrasted with the value of
0.55 eV deduced... | 0301515v1 |
2003-10-16 | AC magnetic behavior of large grain magneto-resistive La0.78Ca0.22Mn0.90Ox materials | We report a detailed set of AC magnetic measurements carried out on bulk
large grain La-Ca-Mn-O samples extracted from a floating zone method-grown rod.
Three samples with $La_{0.78}Ca_{0.22}Mn_{0.90}O_{x}$ stoichiometry but
differing in their microstructure were investigated by electrical resistivity
and AC susceptibi... | 0310376v1 |
2004-01-16 | Study of the SmBaCuO solid solutions decomposition and its possible role for changing critical current | We studied thermochemical characteristics of the Sm1+xBa2-xCu3Oy single
crystals by solution calorimetry. Dependences of formation enthalpies from
samarium content were constructed. It was established that solid solutions on
the bases of Sm123 could be decomposed both in inert and in oxygen atmosphere
into different mi... | 0401277v1 |
2004-05-20 | Tunnel Magneto-resistance in GaMnAs: going beyond Jullière formula | The relation between tunnel magneto-resistance (TMR) and spin polarization is
explored for GaMnAs/GaAlAs/GaMnAs structures where the carriers experience
strong spin-orbit interactions. TMR is calculated using Landauer approach. The
materials are described in the 6 band $\bf {k}\cdot \bf{p}$ model which
includes spin or... | 0405473v2 |
2004-06-21 | Nonquasiparticle states in half-metallic ferromagnets | Anomalous magnetic and electronic properties of the half-metallic
ferromagnets (HMF) have been discussed. The general conception of the HMF
electronic structure which take into account the most important correlation
effects from electron-magnon interactions, in particular, the spin-polaron
effects, is presented. Specia... | 0406487v1 |
2004-08-24 | Current-induced metallic behavior in Pr$_{0.5}$Ca$_{0.5}$MnO$_3$ thin films: competition between Joule heating and nonlinear conduction mechanism | Thin films of Pr0.5Ca0.5MnO3 manganites exhibiting charge/orbital-ordered
properties with colossal magnetoresistance have been synthesized by the pulsed
laser deposition technique on both (100)-SrTiO3 and (100)-LaAlO3 substrates.
The effects of current-induced metallic-behavior of the films are investigated
as a functi... | 0408512v1 |
2004-10-04 | What does intrinsic tunnelling spectroscopy really examine? | The out-of-plane current-voltage (I-V) characteristics of Bi2212 are studied
in experimental environments of different heat transfer efficiency, allowing
practical separation of intrinsic and extrinsic phenomena. {\it Intrinsic}
(heating-free) response is Ohmic in the normal state of Bi2212, while its
resistance, R=V/I... | 0410069v1 |
2004-10-14 | Carbon Nanotubes in Microelectronic Applications | Carbon nanotubes with their outstanding electrical and mechanical properties
are suggested as interconnect material of the future and as switching devices,
which could outperform silicon devices. In this paper we will introduce
nanotubes, specify the applications, where nanotubes can contribute to the
advancement of Mo... | 0410360v1 |
2004-12-13 | Unusual thermoelectric behavior of packed crystalline granular metals | Loosely packed granular materials are intensively studied nowadays.
Electrical and thermal transport properties should reflect the granular
structure as well as intrinsic properties. We have compacted crystalline $CaAl$
based metallic grains and studied the electrical resistivity and the
thermoelectric power as a funct... | 0412323v1 |
2005-07-01 | Resistivity memory effect in La(1-x)Sr(x)MnO(3) | During the study of magnetoresistivity in La(1-x)Ca(x)MnO(3) it was found
that after cycling of the magnetic field, some kind of magnetic field memory
effect was observed. For La0.5Ca0.5MnO3 after cycling of the magnetic field to
13T and back to zero, "frozen" magnetoresistivity decreases about 20 times
comparing to ze... | 0507018v2 |
2005-08-06 | Modelling the 0.6 - 0.7 power law of permittivity and admittance frequency responses in random R-C networks | The dielectric response of complex materials is characterized, in many cases,
by a similar power law frequency dependence of both the real and the imaginary
parts of their complex dielectric constants. In the admittance representation,
this power law is often shown as the constant phase angle (CPA) response.
Apparently... | 0508170v2 |
2005-10-14 | Superconducting transition in disordered granular superconductors in magnetic fields | Motivated by a recent argument that the superconducting (SC) transition field
of three-dimensional (3D) disordered superconductors with granular structure in
a nonzero magnetic field should lie above $H_{c2}(0)$ in low $T$ limit, the
glass transition (or, in 2D, crossover) curve $H_g(T)$ of disordered quantum
Josephson... | 0510380v5 |
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