publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2023-10-27 | Practical application of quantum neural network to materials informatics: prediction of the melting points of metal oxides | Quantum neural network (QNN) models have received increasing attention owing
to their strong expressibility and resistance to overfitting. It is
particularly useful when the size of the training data is small, making it a
good fit for materials informatics (MI) problems. However, there are only a few
examples of the ap... | 2310.17935v1 |
2023-11-01 | Giant anomalous Hall effect in epitaxial Mn$_{3.2}$Ge films with a cubic kagome structure | We report on the first example of epitaxial Mn$_{3 + \delta}$Ge thin films
with a cubic $L1_2$ structure. The films are found to exhibit frustrated
ferromagnetism with an average magnetization corresponding to
0.98$~\pm~$0.06$~\mu_B$/Mn, far larger than the parasitic ferromagnetism in
hexagonal Mn$_3$Ge and the partial... | 2311.00683v1 |
2023-11-06 | Current-induced spin polarization in chiral Tellurium: a first-principles quantum transport study | Te is a naturally p-doped semiconductor with a chiral structure, where an
electrical current causes the conduction electrons to become spin polarized
parallel to the transport direction. In this paper, we present a comprehensive
theoretical study of this effect by employing density functional theory (DFT)
combined with... | 2311.03219v2 |
2023-12-11 | Superconductivity in Ternary Germanide ScPdGe and Silicide ScPdSi | The electronic properties of ScPdGe and ScPdSi, crystallizing in the
hexagonal ZrNiAl and orthorhombic TiNiSi structures, respectively, are
investigated. ScPdGe and ScPdSi are found to show bulk superconductivity below
0.9 and 1.7 K, respectively, based on electrical resistivity and heat capacity
data measured using sy... | 2312.06045v1 |
2024-01-12 | Direction dependent switching of carrier-type enabled by Fermi surface geometry | While charge carriers can typically be designated as either electron- or
hole- type, depending on the sign of the Hall coefficient, some materials defy
this straightforward classification. Here we find that LaRh$_6$Ge$_4$ goes
beyond this dichotomy, where the Hall resistivity is electron-like for magnetic
fields along ... | 2401.06333v1 |
2024-01-13 | Synthesis of thin film infinite-layer nickelates by atomic hydrogen reduction: clarifying the role of the capping layer | We present an integrated procedure for the synthesis of infinite-layer
nickelates using molecular-beam epitaxy with gas-phase reduction by atomic
hydrogen. We first discuss challenges in the growth and characterization of
perovskite NdNiO$_3$/SrTiO$_3$, arising from post growth crack formation in
stoichiometric films. ... | 2401.07129v1 |
2024-02-01 | A mechanism for electrostatically generated magnetoresistance in chiral systems without spin-dependent transport | Significant attention has been drawn to electronic transport in chiral
materials coupled to ferromagnets in the chirality induced spin selectivity
(CISS) effect. A large magnetoresistance (MR) is usually observed which is
widely interpreted to originate from spin (dependent) transport. However, there
are severe discrep... | 2402.00472v1 |
2024-02-28 | Optimizing Beer Glass Shapes to Minimize Heat Transfer During Consumption | This paper addresses the problem of determining the optimum shape for a beer
glass that minimizes the heat transfer while the liquid is consumed, thereby
keeping it cold for as long as possible. The proposed solution avoids the use
of insulating materials. The glass is modelled as a body of revolution
generated by a sm... | 2402.18544v1 |
2024-03-03 | Defect-Induced Strain-Tunable Photoluminescence in AgScP$_2$S$_6$ | Metal thiophosphates (MTPs) are a large family of 2D materials that exhibit
large structural and chemical diversity. They also show promise for
applications in energy harvesting and photodetection. Strain and defect
engineering have previously been demonstrated as useful mechanisms to tune
several properties of MTPs su... | 2403.01581v1 |
2024-03-29 | Gate-tunable quantum acoustoelectric transport in graphene | Transport probes the motion of quasiparticles in response to external
excitations. Apart from the well-known electric and thermoelectric transport,
acoustoelectric transport induced by traveling acoustic waves has been rarely
explored. Here, by adopting a hybrid nanodevices integrated with piezoelectric
substrates, we ... | 2403.20248v1 |
2024-04-02 | Accurate determination of thermoelectric figure of merit using ac Harman method with a four-probe configuration | The ac Harman method has been used for the direct estimation of dimensionless
thermoelectric figure of merit (zT) through ac/dc resistance measurements.
However, accurate zT estimation with a four-probe configuration is difficult
owing to the occurrence of a thermal phase-delay in the heat flow with a low
frequency cur... | 2404.01565v1 |
2024-04-02 | From Seaweed to Security: The Emergence of Alginate in Compromising IoT Fingerprint Sensors | The increasing integration of capacitive fingerprint recognition sensors in
IoT devices presents new challenges in digital forensics, particularly in the
context of advanced fingerprint spoofing. Previous research has highlighted the
effectiveness of materials such as latex and silicone in deceiving biometric
systems. ... | 2404.02150v1 |
2024-04-19 | Perspective on descriptors of mechanical behavior of cubic transition-metal carbides and nitrides | Cubic rocksalt structured transition-metal carbides, nitrides, and related
alloys (TMC/Ns) are attractive for a wide variety of applications, notably as
hard, wear-resistant material. To-date, valence electron concentration (VEC) is
used as a good indicator of stability and mechanical properties of these
refractory com... | 2404.12853v2 |
2024-04-25 | Anisotropic magnetoresistance in altermagnetic MnTe | Recently, MnTe was established as an altermagnetic material that hosts
spin-polarized electronic bands as well as anomalous transport effects like the
anomalous Hall effect. In addition to these effects arising from
altermagnetism, MnTe also hosts other magnetoresistance effects. Here, we study
the manipulation of the ... | 2404.16516v1 |
2024-05-26 | Observation of in-plane anomalous Hall effect associated with orbital magnetization | For over a century, the Hall effect, a transverse effect under out-of-plane
magnetic field or magnetization, has been a cornerstone for magnetotransport
studies and applications. Modern theoretical formulation based on the Berry
curvature has revealed the potential that even in-plane magnetic field can
induce anomalous... | 2405.16722v1 |
2024-05-28 | Exchange Splitting Mechanism of Negative Magnetoresistance in Layered Antiferromagnetic Semimetals | Layered topologically non-trivial and trivial semimetals with AFM-type
ordering of magnetic sublattice are known to exhibit a negative
magnetoresistance that is well correlated with AFM magnetization changes in a
magnetic field. This effect is reported in several experimental studies with
EuFe$_2$As$_2$, EuSn$_2$As$_2$... | 2405.18046v1 |
2005-04-07 | Design of HIV-1-PR inhibitors which do not create resistance: blocking the folding of single monomers | One of the main problems of drug design is that of optimizing the
drug--target interaction. In the case in which the target is a viral protein
displaying a high mutation rate, a second problem arises, namely the eventual
development of resistance. We wish to suggest a scheme for the design of
non--conventional drugs wh... | 0504011v1 |
2012-04-25 | Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks | It has been suggested that the transition between magnetorotationally active
and dead zones in protoplanetary disks should be prone to the excitation of
vortices via Rossby wave instability (RWI). However, the only numerical
evidence for this has come from alpha disk models, where the magnetic field
evolution is not fo... | 1204.5711v2 |
2014-12-18 | Field topologies in ideal and near ideal magnetohydrodynamics and vortex dynamics | Magnetic field topology frozen in ideal magnetohydrodynamics (MHD) and its
breakage in near ideal MHD are reviewed in two parts. The first part gives a
physically complete description of the frozen in field topology, taking
magnetic flux conservation as fundamental and treating four topics, Eulerian
and Lagrangian desc... | 1412.6158v1 |
2015-01-27 | Unconventional Strong Spin-Fluctuation Effects around the Critical Pressure of the Itinerant Ising-Type Ferromagnet URhAl | Resistivity measurements were performed for the itinerant Ising-type
ferromagnet URhAl at temperatures down to 40 mK under high pressure up to 7.5
GPa, using single crystals. We found that the critical pressure of the Curie
temperature exists at around $P_c$ ~ 5.2 GPa. Near $P_c$, the $A$-coefficient
of the $AT^{2}$ Fe... | 1501.06701v2 |
2015-02-06 | General-relativistic resistive-magnetohydrodynamic simulations of binary neutron stars | We have studied the dynamics of an equal-mass magnetized neutron-star binary
within a resistive magnetohydrodynamic (RMHD) approach in which the highly
conducting stellar interior is matched to an electrovacuum exterior. Because
our analysis is aimed at assessing the modifications introduced by resistive
effects on the... | 1502.02021v2 |
2016-04-19 | A chemical solver to compute molecule and grain abundances and non-ideal MHD resistivities in prestellar core collapse calculations | We develop a detailed chemical network relevant to the conditions
characteristic of prestellar core collapse. We solve the system of
time-dependent differential equations to calculate the equilibrium abundances
of molecules and dust grains, with a size distribution given by size-bins for
these latter. These abundances ... | 1604.05613v6 |
2017-03-06 | Mutation supply and the repeatability of selection for antibiotic resistance | Whether evolution can be predicted is a key question in evolutionary biology.
Here we set out to better understand the repeatability of evolution. We
explored experimentally the effect of mutation supply and the strength of
selective pressure on the repeatability of selection from standing genetic
variation. Different ... | 1703.01896v1 |
2020-03-16 | Effect of cytosol viscosity on the flow behavior of red blood cell suspensions in microvessels | The flow behavior of blood in microvessels is directly associated with tissue
perfusion and oxygen delivery. Current efforts on modeling blood flow have
primarily focused on the flow properties of blood with red blood cells (RBCs)
having a viscosity ratio $C$ of unity between the cytosol and suspending
medium, while un... | 2003.09217v1 |
2019-12-24 | DC resistivity near a nematic quantum critical point: Effects of weak disorder and acoustic phonons | We calculate the resistivity associated with an Ising-nematic quantum
critical point in the presence of disorder and acoustic phonons in the lattice
model. We use the memory-matrix transport theory, which has a crucial advantage
compared to other methods of not relying on the existence of well-defined
quasiparticles in... | 1912.11558v3 |
2016-08-16 | Universal Fragment Descriptors for Predicting Electronic Properties of Inorganic Crystals | Historically, materials discovery has been driven by a laborious
trial-and-error process. The growth of materials databases and emerging
informatics approaches finally offer the opportunity to transform this practice
into data- and knowledge-driven rational design. By using data from the AFLOW
repository for high-throu... | 1608.04782v3 |
2019-05-30 | Surface waves with negative phase velocity supported by temperature-dependent hyperbolic materials | A numerical investigation was undertaken to elucidate the propagation of
electromagnetic surface waves guided by the planar interface of two
temperature-sensitive materials. One partnering material was chosen to be
isotropic and the other to be anisotropic. Both partnering materials were
engineered composite materials,... | 1905.13092v2 |
2015-06-13 | Predicting Fracture Energies and Crack-Tip Fields of Soft Tough Materials | Soft materials including elastomers and gels are pervasive in biological
systems and technological applications. Whereas it is known that intrinsic
fracture energies of soft materials are relatively low, how the intrinsic
fracture energy cooperates with mechanical dissipation in process zone to give
high fracture tough... | 1506.04271v1 |
2023-04-19 | Towards a muon scattering tomography system for both low-Z and high-Z materials | Muon scattering tomography (MST) is a non-destructive technique to image
various materials by utilizing cosmic ray muons as probes. A typical MST system
with a two-fold track detectors is particularly effective in detecting high-$Z$
materials (e.g. nuclear materials), but difficult to recognize low-$Z$
materials (e.g. ... | 2304.09489v2 |
2024-05-08 | 2D ferroelectrics and ferroelectrics with 2D: materials and device prospects | Ferroelectric and two-dimensional materials are both heavily investigated
classes of electronic materials. This is unsurprising since they both have
superlative fundamental properties and high-value applications in computing,
sensing etc. In this Perspective, we investigate the research topics where 2D
semiconductors a... | 2405.05432v1 |
2019-08-14 | Substrate effects on charged defects in two-dimensional materials | Two-dimensional (2D) materials are strongly affected by the dielectric
environment including substrates, making it an important factor in designing
materials for quantum and electronic technologies. Yet, first-principles
evaluation of charged defect energetics in 2D materials typically do not
include substrates due to ... | 1908.05208v1 |
2019-12-05 | Do 2D material-based battery electrodes have inherently poor rate-performance? | Two dimensional materials show great potential for use in battery electrodes
and are believed to be particularly promising for high-rate applications.
However, there does not seem to be much hard evidence for the superior
rate-performance of 2D materials compared to non-2D materials. To examine this
point, we have anal... | 1912.02482v1 |
2023-08-18 | MATLABER: Material-Aware Text-to-3D via LAtent BRDF auto-EncodeR | Based on powerful text-to-image diffusion models, text-to-3D generation has
made significant progress in generating compelling geometry and appearance.
However, existing methods still struggle to recover high-fidelity object
materials, either only considering Lambertian reflectance, or failing to
disentangle BRDF mater... | 2308.09278v1 |
2023-08-23 | Energy landscape and phase competition of CsV3Sb5-, CsV6Sb6-, and TbMn6Sn6-type Kagome materials | Finding viable Kagome lattices is vital for materializing novel phenomena in
quantum materials. In this work, we performed element substitutions on CsV3Sb5
with space group P6/mmm, TbMn6Sn6 with space group P6/mmm, and CsV6Sb6 with
space group R-3 m, respectively, as the parent compounds. A total of 4158
materials were... | 2308.11930v1 |
2019-11-26 | A hunt for ultrahard materials | Recent results on search (theoretical prediction, high-pressure synthesis,
etc.) for novel superhard and ultrahard materials are briefly reviewed. | 1911.11731v1 |
2021-12-17 | High-throughput Discovery and Intelligent Design of 2D Functional Materials for Various Applications | Novel technologies and new materials are in high demand for future
energy-efficient electronic devices to overcome the fundamental limitations of
miniaturization of current silicon-based devices. Two-dimensional (2D)
materials show promising applications in the next generation devices because
they can be tailored on th... | 2112.09347v1 |
2006-05-25 | High-Pressure Synthesized Materials: a Chest of Treasure and Hints | The present review covers the production of new materials under high
pressures. A primary limitation on the use of pressures higher than 1 GPa is a
small volume and mass of a produced material. Therefore, despite an extremely
wide range of new high-pressure synthesized substances with unique properties,
synthesis on an... | 0605626v1 |
2020-02-13 | First-principles discovery of stable two-dimensional materials with high-level piezoelectric response | The rational design of two-dimensional piezoelectric materials has recently
garnered great interest due to their increasing use in technological
applications, including sensor technology, actuating devices, energy
harvesting, and medical applications. Several materials possessing high
piezoelectric response have been r... | 2002.05803v2 |
2022-03-08 | Recent Progress of Heterostructures Based on Two Dimensional Materials and Wide Bandgap Semiconductors | Recent progress in the synthesis and assembly of two-dimensional (2D)
materials has laid the foundation for various applications of atomically thin
layer films. These 2D materials possess rich and diverse properties such as
layer-dependent band gaps, interesting spin degrees of freedom, and variable
crystal structures.... | 2203.03895v1 |
1998-11-17 | Stripes, Electron-Like and Polaron-Like Carriers, and High-T_c in the Cuprates | Both "large-U" and "small-U" orbitals are used to study the electronic
structure of the high-T_c cuprates. A striped structure with three types of
carriers are induced, polaron-like "stripons" which carry charge,
"quasielectrons" which carry both charge and spin, and "svivons" which carry
spin and lattice distortion. A... | 9811261v1 |
1999-05-12 | Stripes, Carriers, and High Tc in the Cuprates | Considering both "large-U" and "small-U" orbitals it is found that the
high-Tc cuprates are characterized by a striped structure, and three types of
carriers: polaron-like "stripons" carrying charge, "quasielectrons" carrying
charge and spin, and "svivons" carrying spin and lattice distortion. It is
shown that this ele... | 9905172v1 |
1999-11-12 | High-Field Electrical Transport in Single-Wall Carbon Nanotubes | Using low-resistance electrical contacts, we have measured the intrinsic
high-field transport properties of metallic single-wall carbon nanotubes.
Individual nanotubes appear to be able to carry currents with a density
exceeding 10^9 A/cm^2. As the bias voltage is increased, the conductance drops
dramatically due to sc... | 9911186v1 |
2003-06-12 | Magnetoresistance of Si(001) MOSFETs with high concentration of electrons | We present an experimental study of electron transport in inversion layers of
high-mobility Si(001) samples with occupied excited subbands. The second series
of oscillations, observed in addition to the main series of Shubnikov-de Hass
oscillations, is tentatively attributed to the occupation of a subband
associated wi... | 0306330v1 |
2005-02-18 | High pressure synthesis of a new superconductor Sr2CuO2+xCl2-y induced by apical oxygen doping | Using the apical oxygen doping mechanism, i.e. a partial substitution of
divalence O for the monovalence Cl, a p-type oxychloride cuprate
superconductor, Sr2CuO2+xCl2-y, was synthesized at high pressure high
temperature. The x-ray diffraction refinement suggests the superconductor
crystallizes into a 0201 structure wit... | 0502449v1 |
2006-04-28 | Evidence for Carrier-Induced High-Tc Ferromagnetism in Mn-doped GaN film | A GaN film doped with 8.2 % Mn was grown by the molecular-beam-epitaxy
technique. Magnetization measurements show that this highly Mn-doped GaN film
exhibits ferromagnetism above room temperature. It is also revealed that the
high-temperature ferromagnetic state is significantly suppressed below 10 K,
accompanied by an... | 0604647v1 |
2006-10-05 | Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4 | The influence of high electric fields on the charge stripe order in
Nd1.67Sr0.33NiO4 was studied by means of simultaneous hard x-ray diffraction
and electrical transport experiments. Direct measurements of the charge stripe
satellite peaks in zero and high electric fields provide no evidence for a
deformation or a slid... | 0610132v1 |
2005-04-26 | Flux profile scanners for scattered high-energy electrons | The paper describes the design and performance of flux integrating Cherenkov
scanners with air-core reflecting light guides used in a high-energy, high-flux
electron scattering experiment at the Stanford Linear Accelerator Center. The
scanners were highly radiation resistant and provided a good signal to
background rat... | 0504029v1 |
2001-06-05 | Bell inequalities for arbitrarily high dimensional systems | We develop a novel approach to Bell inequalities based on a constraint that
the correlations exhibited by local realistic theories must satisfy. This is
used to construct a family of Bell inequalities for bipartite quantum systems
of arbitrarily high dimensionality which are strongly resistant to noise. In
particular o... | 0106024v2 |
2008-04-07 | Hg-Based Superconducting Cuprates: High Tc and Pseudo Spin-Gap | A brief review of microscopic studies of high-Tc superconductors HgBa2CuO4+d
and HgBa2CaCu2O6+d is presented. The topics concerned are the pseudo spin-gap,
the antiferromagnetic spin fluctuations near the quantum critical point, and
the mechanism of the high Tc via NMR. The crystal structure with the flat CuO2
plane, t... | 0804.0911v2 |
2008-09-12 | Effect of oxygen incorporation on normal and superconducting properties of MgB2 films | Oxygen was systematically incorporated in MBE grown MgB2 films using in-situ
post-growth anneals in an oxygen environment. Connectivity analysis in
combination with measurements of the critical temperature and resistivity
indicate that oxygen is distributed both within and between the grains. High
values of critical cu... | 0809.2297v1 |
2009-07-20 | Electrical Transport in High Quality Graphene pnp Junctions | We fabricate and investigate high quality graphene devices with contactless,
suspended top gates, and demonstrate formation of graphene pnp junctions with
tunable polarity and doping levels. The device resistance displays distinct
oscillations in the npn regime, arising from the Fabry-Perot interference of
holes betwee... | 0907.3366v1 |
2009-11-11 | Enhanced superconductivity of YBCO interfaces: origin of high critical temperature in layered superconductors | Superconducting transition temperatures Tc of the YBCO film surface and of
the YBCO film/substrate interface were measured inductively. It was observed
that the interface- Tc is always higher then the surface - Tc. However
deposition of silver over-layer enhances the superconducting transition
temperatures. This observ... | 0911.2107v1 |
2010-12-22 | Transport properties of the new Fe-based superconductor KxFe2Se2 (Tc = 33 K) | We synthesized the new Fe-based superconductor K0.8Fe2Se2 single crystals.
The obtained single crystal exhibited a sharp superconducting transition, and
the onset and zero-resistivity temperature was estimated to be 33 and 31.8 K,
respectively. A high upper critical field of 192 T was obtained. Anisotropy of
supercondu... | 1012.4950v1 |
2011-12-13 | High-frequency performance of graphene field effect transistors with saturating IV-characteristics | High-frequency performance of graphene field-effect transistors (GFETs) with
boron-nitride gate dielectrics is investigated. Devices show saturating IV
characteristics and fmax values as high as 34 GHz at 600-nm channel length.
Bias dependence of fT and fmax and the effect of the ambipolar channel on
transconductance a... | 1112.2777v1 |
2018-02-02 | Ultra-high Q terahertz whispering-gallery modes in a silicon resonator | We report on the first experimental demonstration of terahertz (THz)
whispering-gallery modes (WGMs) with an ultra high quality (Q) factor of $1.5
\times {10}^{4}$ at 0.62THz. The WGMs are observed in a high resistivity float
zone silicon (HRFZ-Si) spherical resonator coupled to a sub-wavelength silica
waveguide. A det... | 1802.00549v1 |
2022-06-09 | Characterisation of a new RPC prototype using conventional gas mixture | Resistive Plate Chamber (RPC) is a well-known gaseous detector in the field
of High Energy Physics (HEP) experiments for its good tracking capability, high
efficiency, good time resolution, and low cost of fabrication. The main issue
in RPC is its limitation in the rate handling capability. Several experimental
groups ... | 2206.04259v1 |
2023-04-05 | STRV -- A radiation hard RISC-V microprocessor for high-energy physics applications | While microprocessors are used in various applications, they are precluded
from the use in high-energy physics applications due to the harsh radiation
present. To overcome this limitation a microprocessor design must withstand
high doses of radiation and mitigate radiation induced soft errors. A TMR
protection scheme i... | 2304.02410v1 |
2023-05-02 | Robust and Adaptive Functional Logistic Regression | We introduce and study a family of robust estimators for the functional
logistic regression model whose robustness automatically adapts to the data
thereby leading to estimators with high efficiency in clean data and a high
degree of resistance towards atypical observations. The estimators are based on
the concept of d... | 2305.01350v1 |
2014-10-07 | Decoding Spatial Complexity in Strongly Correlated Electronic Systems | Inside the metals, semiconductors, and magnets of our everyday experience,
electrons are uniformly distributed throughout the material. By contrast,
electrons often form clumpy patterns inside of strongly correlated electronic
systems (SCES) such as colossal magnetoresistance materials and high
temperature superconduct... | 1410.1787v1 |
2021-04-13 | Multiscale modeling of materials: Computing, data science,uncertainty and goal-oriented optimization | The recent decades have seen various attempts at accelerating the process of
developing materials targeted towards specific applications. The performance
required for a particular application leads to the choice of a particular
material system whose properties are optimized by manipulating its underlying
microstructure... | 2104.05918v1 |
2021-09-05 | Discovery and Engineering of Low Work Function Perovskite Materials | Materials with low work functions are critical for an array of applications
requiring the facile removal or efficient transport of electrons through a
device. Perovskite oxides are a promising class of materials for finding low
work functions, and here we target applications in thermionic and field
electron emission. P... | 2109.02005v1 |
2003-05-20 | Very high upper critical fields in MgB2 produced by selective tuning of impurity scattering | We report a significant enhancement of the upper critical field $H_{c2}$ of
different $MgB_2$ samples alloyed with nonmagnetic impurities. By studying
films and bulk polycrystals with different resistivities $\rho$, we show a
clear trend of $H_{c2}$ increase as $\rho$ increases. One particular high
resistivity film had... | 0305474v2 |
2021-08-30 | Machine Learning for Predicting Thermal Transport Properties of Solids | Quantitative descriptions of the structure-thermal property correlation have
been a bottleneck in designing materials with superb thermal properties. In the
past decade, the first-principles phonon calculations using density functional
theory and the Boltzmann transport equation have become a common practice for
predic... | 2108.12945v2 |
2020-12-02 | An Improved Iterative Neural Network for High-Quality Image-Domain Material Decomposition in Dual-Energy CT | Dual-energy computed tomography (DECT) has been widely used in many
applications that need material decomposition. Image-domain methods directly
decompose material images from high- and low-energy attenuation images, and
thus, are susceptible to noise and artifacts on attenuation images. The purpose
of this study is to... | 2012.01986v4 |
2023-10-03 | Estimating viscoelastic, soft material properties using a modified Rayleigh cavitation bubble collapse time | Accurate determination of high strain rate (> 10^3 1/s) constitutive
properties of soft materials remains a formidable challenge. Albeit recent
advancements among experimental techniques, in particular inertial
microcavitation rheometry (IMR), the intrinsic requirement to visualize the
bubble cavitation dynamics has li... | 2310.02475v1 |
2012-08-31 | Ionization by bulk heating of electrons in capacitive radio frequency atmospheric pressure microplasmas | Electron heating and ionization dynamics in capacitively coupled radio
frequency (RF) atmospheric pressure microplasmas operated in helium are
investigated by Particle in Cell simulations and semi-analytical modeling. A
strong heating of electrons and ionization in the plasma bulk due to high bulk
electric fields are o... | 1208.6519v2 |
2022-01-13 | High-temperature superconductivity in hydrides: experimental evidence and details | Since the discovery of superconductivity at 200 K in H3S [1] similar or
higher transition temperatures, Tcs, have been reported for various
hydrogen-rich compounds under ultra-high pressures [2]. Superconductivity was
experimentally proved by different methods, including electrical resistance,
magnetic susceptibility, ... | 2201.05137v1 |
2024-01-15 | High Frequency Response of Volatile Memristors | In this theoretical study, we focus on the high-frequency response of the
electrothermal NbO2-Mott threshold switch, a real-world electronic device,
which has been proved to be relevant in several applications and is classified
as a volatile memristor. Memristors of this kind, have been shown to exhibit
distinctive non... | 2401.10924v1 |
2022-12-05 | Unveiling the complex structure-property correlation of defects in 2D materials based on high throughput datasets | Modification of physical properties of materials and design of materials with
on-demand characteristics is at the heart of modern technology. Rare
application relies on pure materials--most devices and technologies require
careful design of materials properties through alloying, creating
heterostructures of composites ... | 2212.02110v1 |
2023-02-16 | GAASP: Genetic Algorithm Based Atomistic Sampling Protocol for High-Entropy Materials | High-Entropy Materials are composed of multiple elements on comparatively
simpler lattices. Due to the multicomponent nature of such materials, the
atomic scale sampling is computationally expensive due to the combinatorial
complexity. We propose a genetic algorithm based methodology for sampling such
complex chemicall... | 2302.08101v1 |
2022-10-24 | Quantifying the performance of machine learning models in materials discovery | The predictive capabilities of machine learning (ML) models used in materials
discovery are typically measured using simple statistics such as the
root-mean-square error (RMSE) or the coefficient of determination ($r^2$)
between ML-predicted materials property values and their known values. A
tempting assumption is tha... | 2210.13587v1 |
2024-05-14 | An Interoperable Multi Objective Batch Bayesian Optimization Framework for High Throughput Materials Discovery | In this study, we introduce a groundbreaking framework for materials
discovery, we efficiently navigate a vast phase space of material compositions
by leveraging Batch Bayesian statistics in order to achieve specific
performance objectives. This approach addresses the challenge of identifying
optimal materials from an ... | 2405.08900v1 |
2023-02-19 | Resistance Maintained in Digital Organisms despite Guanine/Cytosine-Based Fitness Cost and Extended De-Selection: Implications to Microbial Antibiotics Resistance | Antibiotics resistance has caused much complication in the treatment of
diseases, where the pathogen is no longer susceptible to specific antibiotics
and the use of such antibiotics are no longer effective for treatment. A recent
study that utilizes digital organisms suggests that complete elimination of
specific antib... | 2302.13897v1 |
1998-04-16 | Reconnection via the Tearing Instability | We discuss the role of tearing instabilities in magnetic reconnection. In
three dimensions this instability leads to the formation of strong Alfvenic
waves that remove plasma efficiently from the reconnection layer. As a result
the instability proceeds at high rates while staying close to the linear
regime. Our calcula... | 9804166v1 |
2006-06-15 | Tearing instability in relativistic magnetically dominated plasmas | Many astrophysical sources of high energy emission, such as black hole
magnetospheres, superstrongly magnetized neutron stars (magnetars), and
probably relativistic jets in Active Galactic Nuclei and Gamma Ray Bursts
involve relativistically magnetically dominated plasma. In such plasma the
energy density of magnetic f... | 0606375v2 |
1994-11-17 | Hydrodynamic electron flow in high-mobility wires | Hydrodynamic electron flow is experimentally observed in the differential
resistance of electrostatically defined wires in the two-dimensional electron
gas in (Al,Ga)As heterostructures. In these experiments current heating is used
to induce a controlled increase in the number of electron-electron collisions
in the wir... | 9411067v1 |
1995-12-15 | Nonlocal conductivity in the vortex-liquid regime | We investigate the nonlocal conductivity calculated from the time-dependent
Ginzburg-Landau equation. When the fluctuations of the vector potential are
negligible, the high-temperature (Gaussian) and low-temperature (flux-flow)
forms of the uniform conductivity withan an ab plane (sigma_yy) are essentially
identical. W... | 9512121v1 |
1996-02-13 | Giant Magneto-Resistance in Nd$_{0.7}$Sr$_{0.3}$MnO$_3$ at Optical Frequencies | The optical properties of Nd$_{0.7}$Sr$_{0.3}$MnO$_3$ thin films have been
studied from 5 meV to 25 meV and from 0.25 eV to 3 eV, at temperatures from 15
K to 300 K and magnetic fields up to 8.9 T. A large transfer of spectral weight
from high energy to low energy occurs as the temperature is decreased below 180
K, whe... | 9602075v1 |
1997-09-01 | Superconductor-Insulator Transitions and Insulators with Localized Pairs | Two experiments are described which are related to the problem of localized
Cooper pairs. Magnetic-field-tuned superconductor-insulator transition was
studied in amorphous In--O films with onset of the superconducting transition
in zero field near 2 K. Experiments performed in the temperature range T>0.3 K
indicate tha... | 9709017v1 |
1997-09-02 | Spontaneous DC Current Generation in a Resistively Shunted Semiconductor Superlattice Driven by a TeraHertz Field | We study a resistively shunted semiconductor superlattice subject to a
high-frequency electric field. Using a balance equation approach that
incorporates the influence of the electric circuit, we determine numerically a
range of amplitude and frequency of the ac field for which a dc bias and
current are generated spont... | 9709026v1 |
1997-10-15 | Normal-State Hall Effect and the Insulating Resistivity of High-T_c Cuprates at Low Temperatures | The normal-state Hall coefficient R_H and the in-plane resistivity \rho_{ab}
are measured in La-doped Bi_{2}Sr_{2}CuO_{y} (T_c \simeq 13 K) single crystals
and La_{2-x}Sr_{x}CuO_{4} thin films by suppressing superconductivity with 61-T
pulsed magnetic fields. In contrast to data above T_c, the R_H below \sim 10 K
shows... | 9710155v1 |
1997-12-19 | Nature of the Low Field Transition in the Mixed State of High Temperature Superconductors | We have numerically studied the statics and dynamics of a model
three-dimensional vortex lattice at low magnetic fields. For the statics we use
a frustrated 3D XY model on a stacked triangular lattice. We model the dynamics
as a coupled network of overdamped resistively-shunted Josephson junctions with
Langevin noise. ... | 9712246v2 |
1998-06-19 | Resistance behavior near the magnetic-field-tuned quantum transition in superconducting amorphous In-O films | We have studied the magnetic-field-tuned superconductivity destroying quantum
transition in amorphous In-O films with the onset of superconductivity in zero
field at about 2 K. At temperatures down to 30 mK the critical resistance
R_c=R(T,B_c) has been found to change approximately linearly with temperature,
which is i... | 9806244v2 |
1998-11-19 | Nonlocal Effects on the Surface Resistance of High Temperature Superconductors with (100) and (110) Surfaces | The low temperature surface resistance R_s of d-wave superconductors is
calculated as function of frequency assuming normal state quasiparticle mean
free paths l in excess of the penetration depth. Results depend strongly on the
geometric configuration. In the clean limit, two contributions to R_s with
different temper... | 9811291v2 |
1998-12-03 | Residual resistivity ratio and its relation to the positive magnetoresistance behavior in natural multilayer LaMn2Ge2; relevance to artificial multilayer physics | Results of low temperature magnetoresistance ($\Delta\rho/\rho$) and
isothermal magnetization (M) measurements on polycrystalline ferromagnetic (T_C
close to 300 K) natural multilayers, LaMn_{2+x}Ge_{2-y}Si_y, are reported. It
is found that the samples with large residual resistivity ratio,
$\rho(300K)/\rho(4.2K)$, exh... | 9812052v1 |
1998-12-21 | Non-Universal Power Law of the "Hall Scattering Rate" in a Single-Layer Cuprate Bi_{2}Sr_{2-x}La_{x}CuO_{6} | In-plane resistivity \rho_{ab}, Hall coefficient, and magnetoresistance (MR)
are measured in a series of high-quality Bi_{2}Sr_{2-x}La_{x}CuO_{6} crystals
with various carrier concentrations, from underdope to overdope. Our crystals
show the highest T_c (33 K) and the smallest residual resistivity ever reported
for Bi-... | 9812334v1 |
1999-08-30 | From an antiferromagnet to a heavy-fermion system: CeCu5Au under pressure | The electrical resistivity rho(T) of single crystalline CeCu_5Au under
pressure was measured in the temperature range 30mK<T<300K. Pressure suppresses
the antiferromagnetic order (T_N=2.35K at ambient pressure) and drives the
system into a non-magnetic heavy-fermion state above P_c=4.1(3)GPa. The
electrical resistivity... | 9908442v1 |
1999-09-01 | Tunneling measurements of the coulomb pseudogap in a two-dimensional electron system in a quantizing magnetic field | We study the Coulomb pseudogap for tunneling into the two-dimensional
electron system of high-mobility (Al,Ga)As/GaAs heterojunctions subjected to a
quantizing magnetic field at filling factor $\nu \leq 1$.
Tunnel current-voltage characteristics show that for the double maximum
observed in the tunnel resistance at $\... | 9909011v2 |
1999-09-02 | Transport properties of strongly correlated metals:a dynamical mean-field approach | The temperature dependence of the transport properties of the metallic phase
of a frustrated Hubbard model on the hypercubic lattice at half-filling are
calculated. Dynamical mean-field theory, which maps the Hubbard model onto a
single impurity Anderson model that is solved self-consistently, and becomes
exact in the ... | 9909041v1 |
1999-09-24 | Weak Localization Effect in Superconductors by Radiation Damage | Large reductions of the superconducting transition temperature $T_{c}$ and
the accompanying loss of the thermal electrical resistivity (electron-phonon
interaction) due to radiation damage have been observed for several A15
compounds, Chevrel phase and Ternary superconductors, and $\rm{NbSe_{2}}$ in
the high fluence re... | 9909358v1 |
2000-01-26 | Antiferromagnetic Alignment and Relaxation Rate of Gd Spins in the High Temperature Superconductor GdBa_2Cu_3O_(7-delta) | The complex surface impedance of a number of GdBa$_2$Cu$_3$O$_{7-\delta}$
single crystals has been measured at 10, 15 and 21 GHz using a cavity
perturbation technique. At low temperatures a marked increase in the effective
penetration depth and surface resistance is observed associated with the
paramagnetic and antifer... | 0001379v1 |
2000-11-20 | Theory of the Hall Coefficient and the Resistivity on the Layered Organic Superconductors κ-(BEDT-TTF) | In the organic superconducting \kappa-(BEDT-TTF) compounds, various transport
phenomena exhibit striking non-Fermi liquid behaviors, which should be the
important clues to understanding the electronic state of this system.
Especially, the Hall coefficient ($R_H$) shows Curie-Weiss type temperature
dependence, which is ... | 0011324v2 |
2000-12-07 | Quantum Tunneling of the Order Parameter in Superconducting Nanowires | Quantum tunneling of the superconducting order parameter gives rise to the
phase slippage process which controls the resistance of ultra-thin
superconducting wires at sufficiently low temperatures. If the quantum phase
slip rate is high, superconductivity is completely destroyed by quantum
fluctuations and the wire res... | 0012104v1 |
2001-02-20 | Unusual Properties of Anisotropic Hall Gas: Implication to Metrology of the Integer Quantum Hall Effect | Physical properties of anisotropic compressible quantum Hall states and their
implications to integer quantum Hall effect are studied based on a mean field
theory on the von Neumann lattice. It is found that the Hall gas has unusual
thermodynamic properties such as negative pressure and negative compressibility
and unu... | 0102347v3 |
2001-08-03 | Electrical Resistivity Anisotropy from Self-Organized One-Dimensionality in High-Temperature Superconductors | We investigate the manifestation of the stripes in the in-plane resistivity
anisotropy in untwinned single crystals of La_{2-x}Sr_{x}CuO_{4} (x = 0.02 -
0.04) and YBa_{2}Cu_{3}O_{y} (y = 6.35 - 7.0). It is found that both systems
show strongly temperature-dependent in-plane anisotropy in the lightly
hole-doped region a... | 0108053v2 |
2001-09-21 | Microwave Power, DC Magnetic Field, Frequency and Temperature Dependence of the Surface Resistance of MgB2 | The microwave power, dc magnetic field, frequency and temperature dependence
of the surface resistance of MgB2 films and powder samples were studied. Sample
quality is relatively easy to identify by a number of characteristics, the most
clear being the breakdown in the omega squared law for poor quality samples.
Analys... | 0109397v1 |
2002-01-01 | Memory Effects in Electron Transport in Si Inversion Layers in the Dilute Regime: Individuality versus Universality | In order to separate the universal and sample-specific effects in the
conductivity of high-mobility Si inversion layers, we studied the electron
transport in the same device after cooling it down to 4K at different fixed
values of the gate voltage V^{cool}. Different V^{cool} did not modify
significantly either the mom... | 0201001v1 |
2002-02-08 | Anisotropic Superconducting Properties of MgB2 Single Crystals | In-plane electrical transport properties of MgB2 single crystals grown under
high pressure of 4-6 GPa and temperature of 1400-1700oC in Mg-B-N system have
been measured. For all specimens we found sharp superconducting transition
around 38.1-38.3K with transition width within 0.2-0.3K. Estimated resistivity
value at 40... | 0202133v1 |
2002-03-27 | Transport critical current, anisotropy, irreversibility fields and exponential n factors in Fe sheathed MgB2 tapes | The influence of the initial MgB2 grain size on critical current density,
upper critical fields and irreversibility has been studied on Fe sheathed
monofilamentary MgB2 tapes prepared by the Powder-In-Tube technique. The effect
of the reduction of MgB2 grain size by ball milling was mainly to enhance both
the critical ... | 0203551v1 |
2002-05-10 | Universal Behavior of the Resistance Noise across the Metal-Insulator Transition in Silicon Inversion Layers | Studies of low-frequency resistance noise show that the glassy freezing of
the two-dimensional (2D) electron system in the vicinity of the metal-insulator
transition occurs in all Si inversion layers. The size of the metallic glass
phase, which separates the 2D metal and the (glassy) insulator, depends
strongly on diso... | 0205226v2 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.