publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2019-11-18 | Comparison of screening for methicillin-resistant Staphylococcus aureus (MRSA) at hospital admission and discharge | Methicillin-resistant Staphylococcus aureus (MRSA) is a significant
contributor to the growing concern of antibiotic resistant bacteria, especially
given its stubborn persistence in hospitals and other health care facility
settings. In combination with this characteristic of S. aureus (colloquially
referred to as staph... | 1911.07711v1 |
2020-07-02 | Bloch-Grüneisen temperature and universal scaling of normalized resistivity in doped graphene revisited | In this work, we resolved some controversial issues on the
Bloch-Gr\"{u}neisen (BG) temperature in doped graphene via analytical and
numerical calculations based on full inelastic electron-acoustic-phonon (EAP)
scattering rate and various approximation schemes. Analytic results for BG
temperature obtained by semi-inela... | 2007.00839v1 |
2020-11-16 | Transition region from turbulent to dead zone in protoplanetary disks: local shearing box simulations | The dynamical evolution of protoplanetary disks is of key interest for
building a comprehensive theory of planet formation and to explain the
observational properties of these objects. Using the magnetohydrodynamics code
Athena++, with an isothermal shearing box setup, we study the boundary between
the active and dead ... | 2011.08219v1 |
2021-10-21 | E-DPNCT: An Enhanced Attack Resilient Differential Privacy Model For Smart Grids Using Split Noise Cancellation | High frequency reporting of energy consumption data in smart grids can be
used to infer sensitive information regarding the consumer's life style and
poses serious security and privacy threats. Differential privacy (DP) based
privacy models for smart grids ensure privacy when analysing energy consumption
data for billi... | 2110.11091v4 |
2022-05-10 | Disorder-enhanced effective masses and deviations from Matthiessen's rule in PdCoO$_2$ thin films | The observation of hydrodynamic transport in the metallic delafossite
PdCoO$_2$ has increased interest in this family of highly conductive oxides,
but experimental studies so far have mostly been confined to bulk crystals. In
this work, the development of high-quality thin films of PdCoO$_2$ has enabled
a thorough stud... | 2205.05006v2 |
2022-08-05 | Hall effect in Poiseuille flow of two-dimensional electron fluid | The hydrodynamic regime of charge transport has been recently realized in
high-quality conductors. In the hydrodynamic as well as in the Ohmic regimes
the main part of the Hall resistance of a long sample is determined by the
balance between the Lorentz force and the electric force, acting on conduction
electrons. Expe... | 2208.03032v1 |
2022-10-28 | Lattice effects on the physical properties of half doped perovskite ruthenates | We investigate the unusual phase transitions in SrRuO$_{3}$ and
Sr$_{0.5}$Ca$_{0.5}$Ru$_{1-x}$Cr$_{x}$O$_{3}$ (x=0,0.05 and 0.1) employing
x-ray diffraction, resistivity, magnetic studies and x-ray photoemission
spectroscopy. Our results show the compounds undergo crossover from $itinerant$
ferromagnetism to $localised... | 2210.16036v1 |
2022-12-05 | DeAR: A Deep-learning-based Audio Re-recording Resilient Watermarking | Audio watermarking is widely used for leaking source tracing. The robustness
of the watermark determines the traceability of the algorithm. With the
development of digital technology, audio re-recording (AR) has become an
efficient and covert means to steal secrets. AR process could drastically
destroy the watermark si... | 2212.02339v4 |
2023-04-18 | Characterization of a Superconducting Microstrip Single-Photon Detector Shunted with an External Resistor | A superconducting microstrip single-photon detector (SMSPD) generally
requires a shunt resistor to avoid latching, caused by its high
current-carrying capacity and low kinetic inductance. Here, the effect of the
shunt resistor on the behaviors of microbridge SMSPDs was investigated. We
analyzed the change in equivalent... | 2304.08762v1 |
2023-05-18 | Fabrication of Al/AlOx/Al junctions with high uniformity and stability on sapphire substrates | Tantalum and aluminum on sapphire are widely used platforms for qubits of
long coherent time. As quantum chips scale up, the number of Josephson
junctions on Sapphire increases. Thus, both the uniformity and stability of the
junctions are crucial to quantum devices, such as scalable superconducting
quantum computer cir... | 2305.10956v2 |
2023-06-21 | Coherent states and their superpositions (cat states) in microwave-induced resistance oscillations | We report a novel theoretical approach on the microwave-induced resistance
oscillations based on the coherent states of the quantum harmonic oscillator.
We first obtain an expression for the coherent states of driven-quantum
harmonic oscillators that are used, in the model of microwaveinduced electron
orbits, to calcul... | 2306.12160v1 |
2023-08-28 | Research on the Influence of Underwater Environment on the Dynamic Performance of the Mechanical Leg of a Deep-sea Crawling and Swimming Robot | The performance of underwater crawling and adjustment of the body posture for
underwater manipulating of the deep-sea crawling and swimming robot (DCSR) is
directly influenced by the dynamic performance of the underwater mechanical
legs (UWML), as it serves as the executive mechanism of the DCSR. Compared with
the mech... | 2308.14393v1 |
2023-11-17 | Current manipulation of Giant tunneling altermagnetic resistance in collinear Antiferromagnetic RuO2/MgO/RuO2 sandwich structure | As an emerging non-volatile memory technology, magnetic random access memory
(MRAM) has key features and advantages including non-volatility, high speed,
endurance, low power consumption and radiation tolerance. Conventional MRAM
utilizes magnetic tunnel junctions (MTJs), which consist of two ferromagnetic
layers separ... | 2311.10288v2 |
2024-02-09 | Wellposedness of the electron MHD without resistivity for large perturbations of the uniform magnetic field | We prove the local wellposedness of the Cauchy problems for the electron
magnetohydrodynamics equations (E-MHD) without resistivity for possibly large
perturbations of nonzero uniform magnetic fields. While the local wellposedness
problem for (E-MHD) has been extensively studied in the presence of resistivity
(which pr... | 2402.06278v1 |
2024-03-21 | Aging suppression in Multistrip Multigap Resistive Plate Chambers for high counting rate experiments | A long term operation of Multi-Strip Multi-Gap Resistive Plate Chambers
(MSMGRPC) with gas mixtures based on C2H2F4 and SF6 leads to aging effects,
observed as depositions on the surface of the resistive electrodes. Moreover,
enhanced depositions and higher noise rates were evidenced around the nylon
spacers used for d... | 2403.14190v1 |
2006-03-20 | Unusual metamagnetism in CeIrIn$_5$ | We report a high field investigation (up to 45 T) of the metamagnetic
transition in CeIrIn$_5$ with resistivity and de-Haas-van-Alphen (dHvA) effect
measurements in the temperature range 0.03-1 K. As the magnetic field is
increased the resistivity increases, reaches a maximum at the metamagnetic
critical field, and fal... | 0603490v2 |
2022-11-10 | T-linear resistivity, optical conductivity and Planckian transport for a holographic local quantum critical metal in a periodic potential | High $T_c$ cuprate strange metals are noted for a DC-resistivity that scales
linearly with $T$ from the onset of superconductivity to the crystal melting
temperature, indicative of a Planckian dissipation life time
$\tau_{\hbar}\simeq \hbar /(k_B T)$. At the same time, the optical conductivity
ceases to be of Drude for... | 2211.05492v2 |
1998-05-20 | A phenomenological model for magnetoresistance in granular polycrystalline colossal magnetoresistive materials: the role of spin polarised tunnelling at the grain boundaries | It has been observed that in bulk and polycrystalline thin films of collossal
magnetoresistive (CMR) materials the magnetoresistance follows a different
behaviour compared to single crystals or single crystalline films below the
ferromagnetic transition temperature Tc. In this paper we develop a
phenomenological model ... | 9805258v1 |
2000-11-21 | Anomalous NMR Spin-Lattice Relaxation in SrB_{6} and Ca_{1-x}La_{x}B_{6} | We report the results of {11}B nuclear magnetic resonance (NMR) measurements
of SrB_{6} and Ca_{0.995}La_{0.05}B_{6} below room temperature. Although the
electrical resistivities of these two materials differ substantially, their
{11}B-NMR responses exhibit some strikingly common features. Both materials
exhibit ferrom... | 0011352v2 |
2004-07-17 | Magneto - transport characterization of Dy123 monodomain superconductors | The following report considers textured materials of the DyBa2Cu3O7 type
seeded with a Nd123 seed as initiator. They are grown with an excess 20% Dy211
phase on a Dy2O3 substrate. We report chemical characterizations, electrical
resistivity, thermoelectric power and thermal conductivity over a broad
temperature range a... | 0407463v1 |
2007-01-09 | Pressure Study of Superconductivity and Magnetism in Pure and Rh-Doped RuSr2GdCu2O8 Materials | A hydrostatic pressure study was made on pure and Rh-doped specimens of the
superconducting ferromagnetic compounds Ru1-xRhxSr2GdCu2O8 (x = 0-0.15) by
means of measurement of electrical resistivity vs temperature, in pressures up
to 2 GPa. Partial substitution of Rh for Ru decreases the magnetization of the
material, l... | 0701183v1 |
2007-04-25 | Studies of the temperature and frequency dependent impedance of an electroceramic functional oxide thermistor | The charge transport mechanism and the macroscopic dielectric constant in
polycrystalline device materials commonly exhibit several components such as
electrode-sample interface, grain boundary and bulk contributions. In order to
gain precise understanding of the functionality of polycrystalline
electroceramic device m... | 0704.3378v1 |
2007-07-17 | Gate-induced insulating state in bilayer graphene devices | The potential of graphene-based materials consisting of one or a few layers
of graphite for integrated electronics originates from the large
room-temperature carrier mobility in these systems (approx. 10,000 cm2/Vs).
However, the realization of electronic devices such as field-effect transistors
will require controllin... | 0707.2487v2 |
2009-05-12 | Large magnetic entropy change near room temperature in antipervoskite SnCMn3 | We report the observation of large magnetocaloric effect near room
temperature in antipervoskite SnCMn3. The maximal magnetic entropy change at
the first-order ferrimagnetic-paramagnetic transition temperature (TC 279 K) is
about 80.69mJ/cm3 K and 133mJ/cm3 K under the magnetic field of 20 kOe and 48
kOe, respectively.... | 0905.1773v1 |
2009-06-28 | Partial Kekule Ordering of Adatoms on Graphene | Electronic and transport properties of Graphene, a one-atom thick crystalline
material, are sensitive to the presence of atoms adsorbed on its surface. An
ensemble of randomly positioned adatoms, each serving as a scattering center,
leads to the Bolzmann-Drude diffusion of charge determining the resistivity of
the mate... | 0906.5174v1 |
2012-02-13 | Nanostructured antimony tin oxide synthesized via chemical precipitation method: its characterization and application in humidity sensing | In present investigation we report the synthesis of antimony tin oxide
nanoparticles via chemical precipitation method. The synthesized material was
characterized using X-ray diffractometer, Scanning Electron Microscope,
UV-visible absorption spectroscopy. XRD shows the crystalline nature of the
synthesized material an... | 1205.2336v1 |
2012-02-13 | Effect of nanostructured zinc oxide additives on the humidity and temperature sensing properties of cuprous oxide | Present paper reports the effect of ZnO additives on humidity and temperature
sensing properties of cuprous oxide. The cuprous oxide powder was mixed with
10% and 25% ZnO by weight and these samples were pelletized by using hydraulic
pressing machine. The sensing materials were also investigated by Scanning
Electron Mi... | 1205.2707v1 |
2012-05-29 | Transport Properties of Ni, Co, Fe, Mn Doped Cu0.01Bi2Te2.7Se0.3 for Thermoelectric Device Applications | Bi2Te3 based thermoelectric devices typically use a nickel layer as a
diffusion barrier to block the diffusion of solder or copper atoms from the
electrode into the thermoelectric material. Previous studies have shown
degradation in the efficiency of these thermoelectric devices may be due to the
diffusion of the barri... | 1205.6377v1 |
2012-07-04 | Colossal Magnetoresistance in the Mn2+ Oxypnictides NdMnAsO1-xFx | Colossal magnetoresistance (CMR) is a rare phenomenon in which the electronic
resistivity of a material can be decreased by orders of magnitude upon
application of a magnetic field. Such an effect could be the basis of the next
generation of magnetic memory devices. Here we report CMR in the
antiferromagnetic oxypnicti... | 1207.0958v1 |
2013-10-28 | The d-p band-inversion topological insulator in bismuth-based skutterudites | Skutterudites, a class of materials with cage-like crystal structure which
have received considerable research interest in recent years, are the breeding
ground of several unusual phenomena such as heavy fermion superconductivity,
exciton-mediated superconducting state and Weyl fermions. Here, we predict a
new topologi... | 1310.7413v2 |
2015-05-21 | Ferromagnetism in Cr-doped topological insulator TlSbTe2 | We have synthesized a new ferromagnetic topological insulator by doping Cr to
the ternary topological-insulator material TlSbTe2. Single crystals of
Tl_{1-x}Cr_{x}SbTe2 were grown by a melting method and it was found that Cr can
be incorporated into the TlSbTe2 matrix only within the solubility limit of
about 1%. The C... | 1505.05631v1 |
2016-11-22 | Statistical Methods for Thermal Index Estimation Based on Accelerated Destructive Degradation Test Data | Accelerated destructive degradation test (ADDT) is a technique that is
commonly used by industries to access material's long-term properties. In many
applications, the accelerating variable is usually the temperature. In such
cases, a thermal index (TI) is used to indicate the strength of the material.
For example, a T... | 1611.07412v1 |
2017-11-07 | Fracture toughness characterization through notched small punch test specimens | In this work a novel methodology for fracture toughness characterization by
means of the small punch test (SPT) is presented. Notched specimens are
employed and fracture resistance is assessed through a critical value of the
notch mouth displacement {\delta^SPT}. Finite element simulations and
interrupted experiments a... | 1711.02406v1 |
2018-04-03 | Combination of thermal and electric properties measurement techniques in a single setup suitable for radioactive materials in controlled environments and based on the 3-omega approach | We have designed and developed a new experimental setup, based on the 3-omega
method, to measure thermal conductivity, heat capacity and electrical
resistivity of a variety of samples in a broad temperature range (2-550 K) and
under magnetic fields up to 9 T. The validity of this method is tested by
measuring various t... | 1804.00821v1 |
2018-11-02 | Non-Equilibrium Phonon Transport Across Nanoscale Interfaces | Despite the ubiquity of applications of heat transport across nanoscale
interfaces, including integrated circuits, thermoelectrics, and
nanotheranostics, an accurate description of phonon transport in these systems
remains elusive. Here we present a theoretical and computational framework to
describe phonon transport w... | 1811.01059v1 |
2018-11-07 | Spin Hall effect in 2D metallic delafossite PtCoO$_2$ and vicinity topology | The two-dimensional (2D) metal PtCoO$_2$ is renowned for the lowest room
temperature resistivity among all oxides, close to that of the top two
materials Ag and Cu. In addition, we theoretically predict a strong intrinsic
spin Hall effect. This originates from six strongly-tilted Dirac cones that we
find in the electro... | 1811.03105v1 |
2020-03-22 | Thermoelectric probe of defect state induced by ionic liquid gating in vanadium dioxide | Thermoelectric measurements detect the asymmetry between the density of
states above and below the chemical potential in a material. It provides
insights into small variations in the density of states near the chemical
potential, complementing electron transport measurements. Here, combined
resistance and thermoelectri... | 2003.09840v1 |
2017-03-10 | Highly crystalline 2D superconductors | Recent technological advances in controlling materials have developed methods
to produce idealized two-dimensional (2D) electron systems such as
heterogeneous interfaces, molecular-beam-epitaxy (MBE) grown atomic layers,
exfoliated thin flakes and field-effect devices. These 2D electron systems are
highly-crystalline w... | 1703.03541v1 |
2018-10-07 | Log-periodic quantum magneto-oscillations and discrete scale invariance in topological material HfTe5 | Discrete scale invariance (DSI) is a phenomenon featuring intriguing
log-periodicity which can be rarely observed in quantum systems. Here we report
the log-periodic quantum oscillations in the magnetoresistance (MR) and the
Hall traces of HfTe5 crystals, which reveals the appearance of DSI. The
oscillations show the s... | 1810.03109v1 |
2019-02-20 | Structural origins of electronic conduction in amorphous copper-doped alumina | We perform an {\it ab initio} modeling of amorphous copper-doped alumina
(a-Al$_2$O$_3$:Cu), a prospective memory material based on resistance
switching, and study the structural origin of electronic conduction in this
material. We generate molecular dynamics based models of a-Al$_2$O$_3$:Cu at
various Cu-concentration... | 1902.07559v1 |
2017-04-03 | Superconducting Two-Dimensional Metal-Organic Framework | Superconductivity is a fascinating quantum phenomenon characterized by zero
electrical resistance and the Meissner effect. To date, several distinct
families of superconductors (SCs) have been discovered. These include
three-dimensional (3D) bulk SCs in both inorganic and organic materials as well
as two-dimensional (2... | 1704.00490v1 |
2019-08-07 | Transport phenomena in a free-standing two-dimensional sodium sheet | The advances in the growth techniques provide numerous scope to explore the
possibilities of new 2D materials for potential applications. With the aid of
first-principle calculations we show that 2D Na can be a new addition to the
family of thermodynamically stable 2D materials for device applications. Not
surprisingly... | 1908.02431v1 |
2019-12-18 | Observation of multiple Dirac states in a magnetic topological material EuMg2Bi2 | Initiated by the discovery of topological insulators, topologically
non-trivial materials, more specifically topological semimetals and metals have
emerged as new frontiers in the field of quantum materials. In this work, we
perform a systematic measurement of EuMg2Bi2, a compound with antiferromagnetic
transition temp... | 1912.08645v1 |
2012-03-28 | Finite element modelling of shock-induced damages on ceramic hip prostheses | The aim of this work was to simulate the behaviour of hip prostheses under
mechanical shocks. When hip joint is replaced by prosthesis, during the swing
phase of the leg, a microseparation between the prosthetic head and the cup
could occur. Two different sizes of femoral heads were studied: 28 and 32 mm
diameter, made... | 1203.6154v1 |
2015-04-20 | Giant reversible nanoscale piezoresistance at room temperature in Sr2IrO4 thin films | Layered iridates have been the subject of intense scrutiny on account of
their unusually strong spin-orbit coupling, which opens up a narrow gap in a
material that would otherwise be a metal. This insulating state is very
sensitive to external perturbations. Here, we show that vertical compression at
the nanoscale, del... | 1504.05245v1 |
2018-12-06 | Crack Growth Behavior in NiTi Shape Memory Alloys Under Mode-I Isothermal Loading: Effect of Stress State | Fracture behavior in nickel-titanium (NiTi) shape memory alloys (SMAs)
subjected to mode-I, isothermal loading is studied using finite element
analysis (FEA). Compact tension (CT) SMA specimen is modeled in Abaqus finite
element suite and crack growth under displacement boundary condition is
investigated for plane stra... | 1812.02362v1 |
2018-12-24 | Control of Spin Diffusion and Suppression of the Hanle Effect by the Coexistence of Spin and Valley Hall Effects | In addition to spin, electrons in many materials possess an additional
pseudo-spin degree of freedom known as 'valley'. In materials where the spin
and valley degrees of freedom are weakly coupled, they can be both excited and
controlled independently. In this work, we study a model describing the
interplay of the spin... | 1812.09996v2 |
2019-06-24 | Cross interface model for the thermal transport across interface between overlapped boron nitride nanoribbons | The application of low-dimensional materials for heat dissipation requires a
comprehensive understanding of the thermal transport at the cross interface,
which widely exists in various composite materials and electronic devices. In
this work, we proposed an analytical model, named as cross interface model
(CIM), to acc... | 1906.09751v1 |
2019-11-05 | Molecular beam epitaxy of CuMnAs | We present a detailed study of the growth of the tetragonal polymorph of
antiferromagnetic CuMnAs by the molecular beam epitaxy technique. We explore
the parameter space of growth conditions and their effect on the
microstructural and transport properties of the material. We identify its
typical structural defects and ... | 1911.01794v1 |
2019-11-15 | Flexoskeleton printing for versatile insect-inspired robots | One of the many secrets to the success and prevalence of insects is their
versatile, robust, and complex exoskeleton morphology. A fundamental challenge
in insect-inspired robotics has been the fabrication of robotic exoskeletons
that can match the complexity of exoskeleton structural mechanics. Hybrid
robots composed ... | 1911.06897v2 |
2020-01-07 | Molecular beam epitaxy of the magnetic kagome metal FeSn on LaAlO3 (111) | Materials with a layered Kagome lattice are expected to give rise to novel
physics arising from band structures with topological properties, spin liquid
behavior and the formation of skyrmions. Until now, most work on Kagome
materials has been performed on bulk samples due to difficulties in thin film
synthesis. Here, ... | 2001.01820v2 |
2020-05-11 | Highly flexible electromagnetic interference shielding films based on ultrathin Ni/Ag composites on paper substrates | Highly flexible electromagnetic interference (EMI) shielding material with
excellent shielding performance is of great significance to practical
applications in next-generation flexible devices. However, most EMI materials
suffer from insufficient flexibility and complicated preparation methods. In
this study, we propo... | 2005.04875v1 |
2020-08-19 | Observation of plateau-like magnetoresistance in twisted Fe3GeTe2/Fe3GeTe2 junction | Controlling the stacking of van der Waals (vdW) materials is found to produce
exciting new findings, since hetero- or homo- structures have added the diverse
possibility of assembly and manipulated functionalities. However, so far, the
homostructure with a twisted angle based on the magnetic vdW materials remains
unexp... | 2008.08313v1 |
2020-10-24 | Drawing WS2 thermal sensors on paper substrates | Paper based thermoresistive sensors are fabricated by rubbing WS2 powder
against a piece of standard copier paper, like the way a pencil is used to
write on paper. The abrasion between the layered material and the rough paper
surface erodes the material, breaking the weak van der Waals interlayer bonds,
yielding a film... | 2010.12805v1 |
2021-04-08 | Correlating Nanocrystalline Structure with Electronic Properties in 2D Platinum Diselenide | Platinum diselenide (PtSe${_2}$) is a two-dimensional (2D) material with
outstanding electronic and piezoresistive properties. The material can be grown
at low temperatures in a scalable manner which makes it extremely appealing for
many potential electronics, photonics, and sensing applications. Here, we
investigate t... | 2104.03636v1 |
2021-09-16 | Analytic solution to pseudo-Landau levels in strongly bent graphene nanoribbons | Nonuniform elastic strain is known to induce pseudo-Landau levels in Dirac
materials. But these pseudo-Landau levels are hardly resolvable in an analytic
fashion when the strain is strong, because of the emerging complicated space
dependence in both the strain-modulated Fermi velocity and the strain-induced
pseudomagne... | 2109.08182v2 |
2021-09-27 | Layered, Tunable Graphene Oxide-Nylon Heterostructures for Wearable Electrocardiogram Sensors | Nanoscale engineered materials combined with wearable wireless technologies
can deliver a new level of health monitoring. A reduced graphene oxide-nylon
composite material is developed and tested, demonstrating its usefulness as a
material for sensors in wearable, long-term electrocardiogram (ECG) monitoring
via a comp... | 2109.12739v2 |
2022-04-30 | Scattering mechanisms in state-of-the-art GaAs/AlGaAs quantum wells | Motivated by recent breakthrough in molecular beam epitaxy of GaAs/AlGaAs
quantum wells [Y. J. Chung \textit{et al.}, Nature Materials \textbf{20}, 632
(2021)], we examine contributions to mobility and quantum mobility from various
scattering mechanisms and their dependencies on the electron density. We find
that at lo... | 2205.00365v3 |
2023-07-20 | Superconductivity in a van der Waals layered quasicrystal | van der Waals (vdW) layered transition-metal chalcogenides are attracting
significant attention owing to their fascinating physical properties. This
group of materials consists of abundant members with various elements, having a
variety of different structures. However, all vdW layered materials studied to
date have be... | 2307.10679v1 |
2023-08-21 | Coupling Between Magnetic and Transport Properties in Magnetic Layered Material Mn2-xZnxSb | We synthesized single crystals for Mn2-xZnxSb and studied their magnetic and
electronic transport properties. This material system displays rich magnetic
phase tunable with temperature and Zn composition. In addition, two groups of
distinct magnetic and electronic properties, separated by a critical Zn
composition of x... | 2308.10764v1 |
2023-10-08 | An innovative clay metaBrick-based motif to enhance thermal and acoustic insulation | Metamaterials have gained popularity in recent years as a promising avenue
for producing innovative materials with distinctive properties that offer
unprecedented features. In this study, we address the thermal and acoustic
challenges of building materials. We numerically and experimentally investigate
a clay metaBrick... | 2310.05148v1 |
2024-03-18 | The Role of Temperature on Irradiation Defect Evolution near Surfaces and Grain Boundaries in Tungsten | This study explores the impact of temperature on defect dynamics in tungsten,
emphasizing its application in nuclear fusion reactors as Plasma Facing
Components (PFCs). Through atomistic simulations, the research elucidates the
intricate interplay of defect production, annihilation, and redistribution
under irradiation... | 2403.12259v1 |
2024-03-19 | Unveiling the Reactivity of Oxygen and Ozone on C2N Monolayer: A First-Principles Study | The process of environmental oxidation is pivotal in determining the physical
and chemical properties of two-dimensional (2D) materials. Its impact holds
great significance for the practical application of these materials in
nanoscale devices functioning under ambient conditions. This study delves into
the influence of... | 2403.12454v1 |
2024-05-13 | Significant improvement in sensitivity of an anomalous Nernst heat flux sensor by composite structure | Heat flux sensors (HFS) have attracted significant interest for their
potential in managing waste heat efficiently. A recently proposed HFS, that
works on the basis of the anomalous Nernst effect (ANE), offers several
advantages in its simple structure leading to easy fabrication, low cost, and
reduced thermal resistan... | 2405.07758v1 |
2003-08-25 | Formation of Semi-relativisitc Jets from Magnetospheres of Accreting Neutron Stars: Injection of Hot Bubbles into a Magnetic Tower | We present the results of 2.5-dimensional resistive magnetohydrodynamic (MHD)
simulations of the magnetic interaction between a weakly magnetized neutron
star and its accretion disk. General relativistic effects are simulated by
using the pseudo-Newtonian potential. We find that well-collimated jets
traveling along the... | 0308437v2 |
2009-01-28 | Strong enhancement of Jc in binary and alloyed in-situ MgB2 wires by a new approach: Cold high pressure densification | Cold high pressure densification (CHPD) is presented as a new way to
substantially enhance the critical current density of in situ MgB2 wires at 4.2
and 20 K at fields between 5 and 14 T. The results on two binary MgB2 wires and
an alloyed wire with 10 wt.% B4C are presented The strongest enhancement was
measured at 20... | 0901.4546v1 |
2011-01-24 | Stabilization of an ambient pressure, collapsed tetragonal phase in CaFe2As2 and tuning of the orthorhombic / antiferromagnetic transition temperature by over 70 K by control of nano-precipitates | We have found a remarkably large response of the transition temperature of
CaFe2As2 single crystals grown out of excess FeAs to annealing / quenching
temperature. Whereas crystals that are annealed at 400 C exhibit a first order
phase transition from a high temperature tetragonal to a low temperature
orthorhombic and a... | 1101.4595v1 |
2011-10-14 | Numerical Investigation of Design Strategies to Achieve Long-Life Pavements | Increasing the HMA base thickness and modifying the HMA mixture properties to
improve the resistance to fatigue cracking are among the most popular methods
for achieving long-lasting pavements. Such methods are based on the idea of
reducing the tensile strain at the bottom of the HMA layer below the Fatigue
Endurance L... | 1110.3318v7 |
2013-06-21 | Crystallographic, Electronic, Thermal and Magnetic Properties of Single-Crystal SrCo2As2 | In tetragonal SrCo2As2 single crystals, inelastic neutron scattering
measurements demonstrated that strong stripe-type antiferromagnetic (AFM)
correlations occur at a temperature T = 5 K [W. Jayasekara et al.,
arXiv:1306.5174] that are the same as in the isostructural AFe2As2 (A = Ca, Sr,
Ba) parent compounds of high-T... | 1306.5222v3 |
2014-02-17 | Unravelling the effect of SrTiO3 antiferrodistortive phase transition on the magnetic properties of La0.7Sr0.3MnO3 thin films | Epitaxial La0.7Sr0.3MnO3 (LSMO) thin films, with different thickness ranging
from 20 nm up to 330 nm, were deposited on (100)-oriented strontium titanate
(STO) substrates by pulsed laser deposition, and their structure and morphology
characterized at room temperature. Magnetic and electric transport properties
of the a... | 1402.4040v1 |
2017-12-04 | Effect of crystalline anisotropy on vertical (-201) and (010) beta-Ga2O3 Schottky barrier diodes on EFG single-crystal substrates | Vertical (-201) and (010) beta-Ga2O3 Schottky barrier diodes (SBDs) were
fabricated on single-crystal substrates grown by edge-defined film-fed growth
(EFG) method. High resolution X-ray diffraction (HRXRD) and atomic force
microscopy (AFM) confirmed good crystal quality and surface morphology of the
substrates. The el... | 1712.01318v1 |
2018-04-30 | Detailed study on the Fermi surfaces of the type-II Dirac semimetallic candidates PdTe2 and PtTe2 | We present a detailed quantum oscillatory study on the Dirac type-II
semimetallic candidates PdTe$_{2}$ and PtTe$_{2}$ \emph{via} the temperature
and the angular dependence of the de Haas-van Alphen (dHvA) and Shubnikov-de
Haas (SdH) effects. In high quality single crystals of both compounds, i.e.
displaying carrier mo... | 1805.00087v1 |
2017-03-20 | Pseudogap temperature $T^\star$ of cuprate superconductors from the Nernst effect | We use the Nernst effect to delineate the boundary of the pseudogap phase in
the temperature-doping phase diagram of cuprate superconductors. New data for
the Nernst coefficient $\nu(T)$ of YBa$_{2}$Cu$_{3}$O$_{y}$ (YBCO),
La$_{1.8-x}$Eu$_{0.2}$Sr$_x$CuO$_4$ (Eu-LSCO) and
La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ (Nd-LSCO) a... | 1703.06927v2 |
2022-02-06 | Direct observation of vortices in an electron fluid | Vortices are the hallmarks of hydrodynamic flow. Recent studies indicate that
strongly-interacting electrons in ultrapure conductors can display signatures
of hydrodynamic behavior including negative nonlocal resistance, Poiseuille
flow in narrow channels, and a violation of the Wiedemann-Franz law. Here we
provide the... | 2202.02798v1 |
2014-01-21 | Random strain fluctuations as dominant disorder source for high-quality on-substrate graphene devices | We have performed systematic investigations of transport through graphene on
hexagonal boron nitride (hBN) substrates, together with confocal Raman
measurements and a targeted theoretical analysis, to identify the dominant
source of disorder in this system. Low-temperature transport measurements on
many devices reveal ... | 1401.5356v2 |
2018-12-07 | Chemical Aspects of the Antiferromagnetic Topological Insulator MnBi$_{2}$Te$_{4}$ | Crystal growth of MnBi$_{2}$Te$_{4}$ has delivered the first experimental
corroboration of the 3D antiferromagnetic topological insulator state. Our
present results confirm that the synthesis of MnBi$_{2}$Te$_{4}$ can be
scaled-up and strengthen it as a promising experimental platform for studies of
a crossover between... | 1812.03106v1 |
2018-12-19 | Universal relaxation in a holographic metallic density wave phase | In this work, we uncover a universal relaxation mechanism of pinned density
waves, combining Gauge/Gravity duality and effective field theory techniques.
Upon breaking translations spontaneously, new gapless collective modes emerge,
the Nambu-Goldstone bosons of broken translations. When translations are also
weakly br... | 1812.08118v3 |
2020-06-16 | Topological Dirac states in a layered telluride TaPdTe$_5$ with quasi-one-dimensional PdTe$_2$ chains | We report the synthesis and systematic studies of a new layered ternary
telluride TaPdTe5 with quasi-one-dimensional PdTe2 chains. This compound
crystalizes in a layered orthorhombic structure with space group Cmcm. Analysis
of its curved field-dependent Hall resistivity, using the two-band model,
indicates the hole-do... | 2006.09070v2 |
2020-11-03 | Pressure induced superconductivity in MnSe | The rich phenomena in the FeSe and related compounds have attracted great
interests as it provides fertile material to gain further insight into the
mechanism of high temperature superconductivity. A natural follow-up work was
to look into the possibility of superconductivity in MnSe. It was shown that
MnP becomes supe... | 2011.01510v1 |
2020-12-24 | Structure, Electrical and Optical Properties of ITO Thin Films and their Influence on Performance of CdS/CdTe Thin-Film Solar Cells | In terms of mixing graded TiO2 and SnO2 powders by solid-state reaction
method, ITO was prepared. Using electron beam gun technology, ITO films with
different thicknesses were prepared. The influence of film thickness on
structure, electrical and optical properties was studied. The XRD patterns were
utilized to determi... | 2012.13086v1 |
2021-12-26 | The thickness dependence of quantum oscillations in ferromagnetic Weyl metal SrRuO$_{3}$ | Quantum oscillations in resistivity and magnetization at high magnetic fields
are a macroscopic fingerprint of the energy quantization due to the cyclotron
motion of quasiparticles. In a thin Weyl semimetal, a unique thickness
dependent Weyl-orbit quantum oscillation was proposed to exist, originating
from a nonlocal c... | 2112.13331v2 |
2022-08-04 | Strong-Coupling Superconductivity with $T_c$ $\sim$ 10.8 K Induced by P Doping in the Topological Semimetal Mo$_5$Si$_3$ | By performing P doping on the Si sites in the topological semimetal
Mo$_5$Si$_3$, we discover strong-coupling superconductivity in
Mo$_5$Si$_{3-x}$P$_x$ (0.5 $\le$ $x$ $\le$ 2.0). Mo$_5$Si$_3$ crystallizes in
the W$_5$Si$_3$-type structure with space group of $I4/mcm$ (No. 140), and is
not a superconductor itself. Upon... | 2208.02392v1 |
2023-05-19 | Machine Learning Moment Tensor Potential for Modelling Dislocation and Fracture in L1$_0$-TiAl and D0$_{19}$-Ti$_3$Al Alloys | Dual-phase $\gamma$-TiAl and $\alpha_2$-Ti$_{3}$Al alloys exhibit high
strength and creep resistance at high temperatures. However, they suffer from
low tensile ductility and fracture toughness at room temperature. Experimental
studies show unusual plastic behaviour associated with ordinary and
superdislocations, makin... | 2305.11825v2 |
2023-06-05 | Imaging the Meissner effect and flux trapping in a hydride superconductor at megabar pressures using a nanoscale quantum sensor | By directly altering microscopic interactions, pressure provides a powerful
tuning knob for the exploration of condensed phases and geophysical phenomena.
The megabar regime represents an exciting frontier, where recent discoveries
include novel high-temperature superconductors, as well as structural and
valence phase ... | 2306.03122v1 |
2023-06-24 | Exploration of strongly correlated states in SmB6 through a comparison of its two-coil pick-up response to that of Bi2Se3 | Earlier studies on the Kondo insulator SmB6 reveal the presence of a bulk
Kondo insulating gap between 30 - 50 K, and the emergence of a conducting
surface state only below 4 K. Here, we compare the two-coil mutual inductance
pick-up response of SmB6 single crystal with that of a conventional topological
insulator (TI)... | 2306.13901v1 |
2024-01-07 | Tantalum airbridges for scalable superconducting quantum processors | The unique property of tantalum (Ta), particularly its long coherent lifetime
in superconducting qubits and its exceptional resistance to both acid and
alkali, makes it promising for superconducting quantum processors. It is a
notable advantage to achieve high-performance quantum processors with neat and
unified fabric... | 2401.03537v1 |
2024-04-16 | A Young Super Star Cluster Powering a Nebula of Retained Massive Star Ejecta | We suggest that "Godzilla", an intriguing source in the lensed Sunburst
galaxy at $z=2.37$, is a young super star cluster powering a compact nebula
within gravitationally trapped stellar ejecta. Employing HST photometry and
spectroscopy from MUSE and X-Shooter at VLT, we infer physical and chemical
properties of the cl... | 2404.10755v2 |
2023-02-09 | Scattering-dependent transport of SrRuO3 films: From Weyl fermion transport to hump-like Hall effect anomaly | Recent observation of quantum transport phenomena of Weyl fermions has
brought much attention to 4d ferromagnetic perovskite SrRuO3 as a magnetic Weyl
semimetal. Besides, the hump-like Hall effect anomaly, which might have a
topological origin, has also been reported for this material. Here, we show
that the emergence ... | 2302.04568v1 |
2024-02-29 | Magnetism, heat capacity and electronic structure of EuCd$_2$P$_2$ in view of its colossal magnetoresistance | The mechanism of the peculiar transport properties around the magnetic
ordering temperature of semiconducting antiferromagnetic EuCd$_2$P$_2$ is not
yet understood. With a huge peak in the resistivity observed above the N\'eel
temperature, $T_{\rm N}=10.6\,\rm K$, it exhibits a colossal magnetoresistance
effect. Recent... | 2402.18911v1 |
2023-01-14 | Discovery of 2D materials using Transformer Network based Generative Design | Two-dimensional (2D) materials have wide applications in superconductors,
quantum, and topological materials. However, their rational design is not well
established, and currently less than 6,000 experimentally synthesized 2D
materials have been reported. Recently, deep learning, data-mining, and density
functional the... | 2301.05824v1 |
2014-05-15 | Effect of high pressure annealing on the normal state transport of LaO0.5F0.5BiS2 | We study normal state electrical, thermoelectrical and thermal transport in
polycrystalline BiS2-based compounds, which become superconducting by F doping
on the O site. In particular we explore undoped LaOBiS2 and doped
LaO0.5F0.5BiS2 samples, prepared either with or without high pressure
annealing, in order to eviden... | 1405.3832v2 |
2021-09-05 | On the design of particle filters inspired by animal noses | Passive filtering is a common strategy used to reduce airborne disease
transmission and particulate contaminants in buildings and individual covers.
The engineering of high-performance filters with relatively low flow resistance
but high virus- or particle-blocking efficiency is a nontrivial problem of
paramount releva... | 2109.08018v1 |
1997-09-27 | Low-temperature electrical transport and double exchange in La(Pb,Ca)MnO | The resistivity in the ferromagnetic state of flux-grown
La_{2/3}(Pb,Ca)_{1/3}MnO_3 single crystals, measured in magnetic fields up to 7
T, reveals a strong quadratic temperature dependence at and above 50 K. At
lower temperatures, this contribution drops precipitously leaving the
resistivity essentially temperature in... | 9709305v3 |
1998-01-07 | Theory of the Resistive Transition in Overdoped $Tl_2Ba_2CuO_{6+x}$: Implications for the angular dependence of the quasiparticle scattering rate in High-$T_c$ superconductors | We show that recent measurements of the magnetic field dependence of the
magnetization, specific heat and resistivity of overdoped $T_c \sim 17K$
$Tl_{2}Ba_{2}CuO_{6+\delta}$ in the vicinity of the superconducting $H_{c2}$
imply that the vortex viscosity is anomalously small and that the material
studied is inhomogeneo... | 9801059v1 |
1998-08-25 | P-wave Pairing and Colossal Magnetoresistance in Manganese Oxides | We point out that the existing experimental data of most manganese oxides
show the {\sl frustrated} p-wave superconducting condensation in the
ferromagnetic phase in the sense that the superconducting coherence is not long
enough to cover the whole system. The superconducting state is similar to the
$A_{1}$ state in su... | 9808275v1 |
1998-10-30 | Hall Effect of La2/3(Ca,Pb)1/3MnO3 Single Crystals near the Critical Temperature | The Hall resistivity rho_{xy} of a La_{2/3}(Ca,Pb)_{1/3}MnO_3 single crystal
has been measured as a function of temperature and field. The overall behavior
is similar to that observed previously in thin-films. At 5 K, rho_{xy} is
positive and linear in field, indicating that the anomalous contribution $R_S$
is negligib... | 9810410v1 |
1998-11-28 | Negative Differential Resistance in the Scanning Tunneling Spectroscopy of Organic molecules | The conductance-voltage spectrum of molecular nanostructures measured by
scanning tunneling spectroscopy (STS) is generally assumed to reflect the local
density of states of the molecule. This excludes the possibility of observing
negative differential resistance (NDR). We report here the observation of NDR
in the scan... | 9811402v1 |
1998-12-27 | Field Induced Transition from Metal to Insulator in the CMR Manganites | The gigantic reduction of the electric resistivity under the applied magnetic
field, CMR effect, is now widely accepted to appear in the vicinity of the
insulator to metal transition of the perovskite manganites. Recently, we have
discovered the first order transition from ferromagnetic metal to insulator in
$\rm La_{0... | 9812404v1 |
1999-01-25 | Influence of Cu on spin-polaron tunneling in the ferromagnetic state of La(2/3)Ca(1/3)Mn(1-x)Cu(x)O(3) from the resistivity data | Nearly a 50% decrease of resistivity \rho (T,x) due to just 4% Cu doping on
the Mn site of La(2/3)Ca(1/3)Mn(1-x)Cu(x)O(3) is observed. Attributing the
observed phenomenon to the substitution induced decrease of the spin polaron
energy E_s(x) below the Curie point T_C(x)=T_C(0)(1-x), all data are found to
be well fitted... | 9901263v1 |
1999-03-03 | c-axis Tunneling in Nb/Au/YBaCuO Structures | We present the experimental results for Nb/Au/YBaCuO structures, in which the
current flows along (001) direction of YBaCuO film. The theoretical evaluations
show, that at the experimental values of the Au/YBaCuO interface transparency,
determined from the interface resistance D~10^-6, the critical current of the
struc... | 9903065v1 |
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