publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2016-09-08 | Evidence of Ballistic Thermal Transport in Lithium Niobate at Room Temperature | In ballistic transport, heat carriers such as phonons travel through the
solid without any scattering or interaction. Therefore, there is no temperature
gradient in the solid, which seems to transport the heat without getting heated
itself. Ballistic transport is typically seen in high purity crystals at either
tempera... | 1609.02585v1 |
2018-07-03 | ssDNA sequencing by rectification | Fast, reliable and inexpensive DNA sequencing is an important pursuit in
healthcare, especially in personalized medicine with possible deep societal
impacts. Despite significant progress of various nanopore-based sequencing
configurations, challenges remain in resolution (due to thermal fluctuations or
to sensitivity t... | 1807.01215v4 |
2018-12-16 | Quantum dots formed in three-dimensional Dirac semimetal Cd$_3$As$_2$ nanowires | We demonstrate quantum dot (QD) formation in three-dimensional Dirac
semimetal Cd$_{3}$As$_{2}$ nanowires using two electrostatically tuned p$-$n
junctions with a gate and magnetic fields. The linear conductance measured as a
function of gate voltage under high magnetic fields is strongly suppressed at
the Dirac point ... | 1812.06416v1 |
2019-01-17 | Compositional dependence of epitaxial Tin+1SiCn MAX-phase thin films grown from a Ti3SiC2 compound target | We investigate sputtering of a Ti3SiC2 compound target at temperatures
ranging from RT (no applied external heating) to 970 oC as well as the
influence of the sputtering power at 850 oC for the deposition of Ti3SiC2 films
on Al2O3(0001) substrates. Elemental composition obtained from time-of-flight
energy elastic recoi... | 1901.05904v1 |
2019-06-10 | Anomalous electron transport in epitaxial NdNiO$_3$ films | The origin of simultaneous electronic, structural and magnetic transitions in
bulk rare-earth nickelates ($RE$NiO$_3$) remains puzzling with multiple
conflicting reports on the nature of these entangled phase transitions.
Heterostructure engineering of these materials offers unique opportunity to
decouple metal-insulat... | 1906.03809v1 |
2019-10-22 | Magnetic topological insulator MnBi6Te10 with zero-field ferromagnetic state and gapped Dirac surface states | Magnetic topological insulators (TIs) with nontrivial topological electronic
structure and broken time-reversal symmetry exhibit various exotic topological
quantum phenomena. The realization of such exotic phenomena at high temperature
is one of central topics in this area. We reveal that MnBi6Te10 is a magnetic
TI wit... | 1910.10101v2 |
2020-01-03 | Coulomb Blockade Effects in a Topological Insulator Grown on a High-Tc Cuprate Superconductor | The evidence for proximity-induced superconductivity in heterostructures of
topological insulators and high-Tc cuprates has been intensely debated. We use
molecular beam epitaxy to grow thin films of topological insulator Bi2Te3 on a
cuprate Bi2Sr2CaCu2O8+x, and study the surface of Bi2Te3 using low-temperature
scannin... | 2001.00906v2 |
2020-07-14 | Cyclic plasticity and fatigue damage of CrMnFeCoNi high entropy alloy fabricated by laser powder-bed fusion | The CrMnFeCoNi high-entropy alloy is highly printable and holds great
potential for structural applications. However, no significant discussions on
cyclic plasticity and fatigue damage in previous studies. This study provides
significant insights into the link between print processes, solidification
microstructure, cyc... | 2007.07043v1 |
2020-07-24 | Integration of multi-layer black phosphorus into photoconductive antennas for THz emission | We report the fabrication, characterization, and modeling of photoconductive
antennas using 40 nm thin-film flakes of black phosphorus (BP) as the
photoconductor and hexagonal boron nitride (hBN) as a capping layer to prevent
oxidation of BP. Dipole antennas were fabricated on oxidized high-resistivity
Si substrates, a... | 2007.12775v1 |
2020-08-06 | Constraining the ellipticity of millisecond pulsars with observed spin-down rates | A spinning neutron star (NS) that is asymmetric with respect to its spin axis
can emit continuous gravitational wave (GW) signals. The spin frequencies and
their distribution of radio millisecond pulsars (MSPs) and accreting MSPs
provide some evidences of GW radiation, and MSPs are ideal probes detecting
high frequency... | 2008.02444v2 |
2020-08-22 | Large Transport Gap Modulation in Graphene via Electric Field Controlled Reversible Hydrogenation | Graphene is of interest in the development of next-generation electronics due
to its high electron mobility, flexibility and stability. However, graphene
transistors have poor on/off current ratios because of the absence of a
bandgap. One approach to introduce an energy gap is to use hydrogenation
reaction, which chang... | 2008.09749v2 |
2020-10-04 | Ballistic-hydrodynamic phase transition in flow of two-dimensional electrons | Phase transitions are characterized by a sharp change in the type of dynamics
of microparticles, and their description usually requires quantum mechanics.
Recently, a peculiar type of conductors was discovered in which two-dimensional
(2D) electrons form a viscous fluid. In this work we reveal that such electron
fluid ... | 2010.01642v4 |
2020-10-22 | Li-ion Battery Fault Detection in Large Packs Using Force and Gas Sensors | Internal short circuits are a leading cause of battery thermal runaway, and
hence a major safety issue for electric vehicles. An internal short circuit
with low resistance is called a hard internal short, which causes a high
internal current flow that leads to an extremely fast temperature rise, gas
generation, cell sw... | 2010.13519v1 |
2020-11-01 | Experimental demonstration of particle acceleration with normal conducting accelerating structure at cryogenic temperature | Reducing the operating temperature of normal conducting particle accelerators
substantially increases their efficiency. Low-temperature operation increases
the yield strength of the accelerator material and reduces surface resistance,
hence a great reduction in cyclic fatigue could be achieved resulting in a
large redu... | 2011.00391v1 |
2020-12-13 | Microfluidic device coupled with total internal reflection microscopy for in situ observation of precipitation | In situ observation of precipitation or phase separation induced by solvent
addition is important in studying its dynamics. Combined with optical and
fluorescence microscopy, microfluidic devices have been leveraged in studying
the phase separation in various materials including biominerals, nanoparticles,
and inorgani... | 2012.06962v1 |
2021-01-31 | Monoclinic EuSn$_2$As$_2$: A Novel High-Pressure Network Structure | The layered crystal of EuSn$_2$As$_2$ has a Bi$_2$Te$_3$-type structure in
rhombohedral ($R\bar{3}m$) symmetry and has been confirmed to be an intrinsic
magnetic topological insulator at ambient conditions. Combining {\it ab initio}
calculations and \emph{in-situ} x-ray diffraction measurements, we identify a
new monoc... | 2102.00437v2 |
2021-02-18 | Crystal orientation-dependent oxidation of epitaxial TiN films with tunable plasmonics | Titanium nitride (TiN) is a paradigm of refractory transition metal nitrides
with great potential in vast applications. Generally, the plasmonic performance
of TiN can be tuned by oxidation, which was thought to be only temperature-,
oxygen partial pressure-, and time-dependent. Regarding the role of
crystallographic o... | 2102.09126v1 |
2021-03-15 | Thermal Visualization of Buried Interfaces by Transient and Steady-State Responses of Time-Domain Thermoreflectance | Thermal resistances from interfaces impede heat dissipation in
micro/nanoscale electronics, especially for high-power electronics. Despite the
growing importance of understanding interfacial thermal transport, advanced
thermal characterization techniques which can visualize thermal conductance
across buried interfaces,... | 2103.08084v1 |
2021-03-24 | Quantum transport properties of beta-Bi4I4 near and well beyond the extreme quantum limit | We have investigated the magneto-transport properties of beta-Bi4I4 bulk
crystal, which was recently theoretically proposed and experimentally
demonstrated to be a topological insulator. At low temperature T and magnetic
field B, a series of Shubnikov-De Haas(SdH) oscillations are observed on the
magnetoresistivity (MR... | 2103.13079v2 |
2021-04-15 | Negligible oxygen vacancies, low critical current density, electric-field modulation, in-plane anisotropic and high-field transport of a superconducting Nd0.8Sr0.2NiO2/SrTiO3 heterostructure | The emerging Ni-based superconducting oxide thin films are rather intriguing
to the entire condensed matter physics. Here we report some brief experimental
results on transport measurements for a 14-nm-thick superconducting
Nd0.8Sr0.2NiO2/SrTiO3 thin-film heterostructure with an onset transition
temperature of ~9.5 K. ... | 2104.07316v2 |
2021-04-26 | Impact of the nucleation of charge clusters on the retention of memristors: a self-consistent phase field computational study | In recent years, resistive RAM often referred to as memristor is actively
pursued as a replacement for nonvolatile-flash memory due to its superior
characteristics such as high density, scalability, low power operation, high
endurance, and fast operating speed. However, one of the challenges that need
to be overcome is... | 2104.12829v1 |
2021-06-02 | Multiband effects on the upper critical field angular dependence of 122-family iron pnictide superconductors | Detailed measurements of the in-plane resistivity were performed in a
high-quality Ba(Fe$_{1-x}$Co$_{x}$)$_2$As$_2$ ($x=0.065$) single crystal, in
magnetic fields up to 9 T and with different orientations $\theta$ relative to
the crystal $c$ axis. A significant $\rho(T)_{H,\theta}$ rounding is observed
just above the s... | 2106.01307v1 |
2021-07-07 | Magnetization-tuned topological quantum phase transition in MnBi2Te4 devices | Recently, the intrinsic magnetic topological insulator MnBi2Te4 has attracted
enormous research interest due to the great success in realizing exotic
topological quantum states, such as the quantum anomalous Hall effect (QAHE),
axion insulator state, high-Chern-number and high-temperature Chern insulator
states. One ke... | 2107.03224v1 |
2021-07-22 | Anomalous Transport in High-Mobility Superconducting SrTiO$_3$ Thin Films | The study of subtle effects on transport in semiconductors requires
high-quality epitaxial structures with low defect density. Using hybrid
molecular beam epitaxy (MBE), SrTiO$_3$ films with low-temperature mobility
exceeding 42,000 cm$^2$V$^{-1}$s$^{-1}$ at low carrier density of 3 x 10$^{17}$
cm$^{-3}$ were achieved.... | 2107.10904v1 |
2021-09-27 | Pressure-induced monotonic enhancement of Tc to over 30 K in the superconducting Pr0.82Sr0.18NiO2 thin films | The successful synthesis of superconducting infinite-layer nickelate thin
films with the highest Tc ~ 15 K has reignited great enthusiasms on this family
of potential analogue to high-Tc cuprates. Pursuing a higher Tc is always an
imperative task in studying a new superconducting material system. Here we
report high-qu... | 2109.12811v2 |
2021-10-26 | Novel Lithium-Sulfur Polymer Battery Operating at Moderate Temperature | A safe lithium-sulfur (Li-S) battery employs a composite polymer electrolyte
based on a poly(ethylene glycol) dimethyl ether (PEGDME) solid at room
temperature. The electrolyte membrane enables a stable and reversible Li-S
electrochemical process already at 50{\deg}C, with low resistance at the
electrode/electrolyte in... | 2110.13727v1 |
2021-11-30 | Bosonic metal states in crystalline iron-based superconductors at the two-dimensional limit | The nature of the anomalous metal, one of the quantum ground states of
two-dimensional (2D) bosonic systems, remains a major puzzle even after several
decades of study. Here, we report a systematic investigation on the transport
properties of ultrathin crystalline FeSe films grown on SrTiO3 (STO) as well as
the nanopat... | 2111.15488v2 |
2022-03-14 | Large enhancement in thermal conductivity of solvent cast expanded-graphite/polyetherimide composites | We demonstrate in this work, that expanded graphite (EG) can lead to a very
large enhancement in thermal conductivity of polyetherimide-graphene and
epoxy-graphene nanocomposites prepared via solvent casting technique. A k value
of 6.56 Wm-1K-1 is achieved for 10 weight % composition sample, representing an
enhancement... | 2203.06828v1 |
2022-03-18 | Thermoelectric transport properties of gapless pinned charge density waves | Quantum strongly correlated matter exhibits properties which are not easily
explainable in the conventional framework of Fermi liquids. Universal effective
field theory tools are applicable in these cases regardless of the microscopic
details of the quantum system, since they are based on symmetries. It is
necessary, h... | 2203.10038v2 |
2022-05-11 | An mCherry biolaser based on microbubble cavity with ultra-low threshold | Biolasers show considerable potential in the biomedical field. Fluorescent
protein (FP) is a type of biomaterial with good luminescence efficiency that
can be used as the luminescent gain medium in biolasers. Due to the higher
cell/tissue permeability, lower cell phototoxicity, and relatively less
background fluorescen... | 2205.05220v2 |
2022-07-01 | Efficient and Scalable GaInAs Thermophotovoltaic Devices | Thermophotovoltaics are promising solid-state energy converters for a variety
of applications such as grid-scale energy storage, concentrating solar-thermal
power, and waste heat recovery. Here, we report the design, fabrication, and
testing of large area (0.8 cm$^2$), scalable, single junction 0.74-eV GaInAs
thermopho... | 2207.00565v1 |
2022-07-12 | Non-destructive Depth-Resolved Characterization of Residual Strain Fields in High Electron Mobility Transistors using Differential Aperture X-ray Microscopy | Localized residual stress and elastic strain concentrations in
microelectronic devices often affect the electronic performance, resistance to
thermomechanical damage, and, likely, radiation tolerance. A primary challenge
for characterization of these concentrations is that they exist over sub-$\mu$m
length-scales, prec... | 2207.05789v2 |
2022-08-10 | Synthesis of Superconducting Phase of La$_{0.5}$Ce$_{0.5}$H$_{10}$ at High Pressures | Clathrate hydride \emph{Fm}\={3}\emph{m}-LaH$_{10}$ has been proven as the
most extraordinary superconductor with the critical temperature $T_c$ above 250
K upon compression of hundreds of GPa in recent years. A general hope is to
reduce the stabilization pressure and maintain the high $T_c$ value of the
specific phase... | 2208.05199v1 |
2022-09-12 | Emergent magnetic states and tunable exchange bias at all 3d nitride heterointerfaces | Interfacial magnetism stimulates the discovery of giant magnetoresistance and
spin-orbital coupling across the heterointerfaces, facilitating the intimate
correlation between spin transport and complex magnetic structures. Over
decades, functional heterointerfaces composed of nitrides are seldomly explored
due to the d... | 2209.05209v1 |
2022-11-02 | Tunable Rapid Electron Transport in Titanium Oxide Thin Films | Rapid electron transport in the quantum well triggers many novel physical
phenomena and becomes a critical point for the high-speed electronics. Here, we
found electrical properties of the titanium oxide changed from semiconducting
to metallic as the degree of oxidation decreased and Schottky quantum well was
formed at... | 2211.01162v1 |
2023-03-06 | A Miniaturised Camera-based Multi-Modal Tactile Sensor | In conjunction with huge recent progress in camera and computer vision
technology, camera-based sensors have increasingly shown considerable promise
in relation to tactile sensing. In comparison to competing technologies (be
they resistive, capacitive or magnetic based), they offer
super-high-resolution, while sufferin... | 2303.03093v1 |
2023-03-15 | Rare observation of spin-gapless semiconducting characteristics and related band topology of quaternary Heusler alloy CoFeMnSn | In this paper, we report the theoretical investigation and experimental
realization of a new spin-gapless semiconductor (SGSs) compound CoFeMnSn
belonging to the family of quaternary Heusler alloys. Through the use of
several ground-state energy calculations, the most stable structure has been
identified. Calculations ... | 2303.08589v2 |
2023-04-11 | Effects of equivalent composition on superconducting properties of high-entropy REOBiS$_2$ (RE = La, Ce, Pr, Nd, Sm, Gd) single crystals | Superconductors are influenced by high-entropy alloys (HEAs); these have been
investigated in various functional materials. REOBiS$_2$ (RE = La, Ce, Pr, Nd,
Sm, and Gd in different combinations) single crystals with HEAs at the RE-site
were successfully grown using the flux method. The obtained crystals were
plate-shap... | 2304.04993v1 |
2023-06-21 | An Analytical Model to Quantify the Local Lattice Distortion of Refractory High Entropy Alloys | Local lattice distortion (LLD) of high entropy alloys (HEAs) especially
refractory HEAs, which is different from one lattice site to another,
determines the mechanical properties of HEAs such as yield strength and
radiation resistance, and is crucial to modulating catalytic activity of HEAs
via the atomic strain. In pa... | 2306.11959v1 |
2023-06-28 | High-Q trenched aluminum coplanar resonators with an ultrasonic edge microcutting for superconducting quantum devices | Dielectric losses are one of the key factors limiting the coherence of
superconducting qubits. The impact of materials and fabrication steps on
dielectric losses can be evaluated using coplanar waveguide (CPW) microwave
resonators. Here, we report on superconducting CPW microwave resonators with
internal quality factor... | 2306.16301v1 |
2023-10-05 | Liquid Cooling System for a High Power, Medium Frequency, and Medium Voltage Isolated Power Converter | Power electronics systems, widely used in various applications such as
industrial automation, electric cars, and renewable energy, have the primary
function of converting and controlling electrical power to the desired type of
load. Despite their reliability and efficiency, power losses in these systems
generate signif... | 2310.03577v1 |
2023-10-19 | Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin-transfer torque using a composition-gradient film: application to Co$_{x}$Fe$_{1-x}$ (0 $\le$ $\textit{x}$ $\le$ 1) system | We develop a high-throughput method for measuring the composition dependence
of magnetoresistance (MR) and spin-transfer-torque (STT) effects in
current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) devices and
report its application to the CoFe system. The method is based on the use of
composition-gradient ... | 2310.12434v1 |
2023-11-25 | Our Dark Matter Stopping in the Earth | We have worked for some time on a model for dark matter, in which dark matter
consists of small bubbles of a new speculated type of vacuum, which are pumped
up by some ordinary matter such as diamond, so as to resist the pressure of the
domain wall separating the two vacua. Here we put forward thoughts on, how such
mac... | 2311.14996v1 |
2023-11-27 | Tailoring the Opto-Electronic Properties of Oxide-Metal-Oxide Transparent Electrode Using Cu Seed Layer | The oxide-metal-oxide architecture is a promising approach for the
development of the high-performance indium-free transparent electrode (TE),
which is a key component of various optoelectronic applications such as solar
cells, organic LEDs, and touchscreen panels. Here in this work, we have shown
high-performance TE c... | 2311.15535v2 |
2023-11-30 | Vanishing of the anomalous Hall effect and enhanced carrier mobility in the spin-gapless ferromagnetic Mn2CoGa1-xAlx alloys | Spin gapless semiconductor (SGS) has attracted long attention since its
theoretical prediction, while concrete experimental hints are still lack in the
relevant Heusler alloys. Here in this work, by preparing the series alloys of
Mn2CoGa1-xAlx (x=0, 0.25, 0.5, 0.75 and 1), we identified the vanishing of
anomalous Hall ... | 2311.18335v1 |
2024-01-31 | Electrical 180o switching of Néel vector in spin-splitting antiferromagnet | Antiferromagnetic spintronics have attracted wide attention due to its great
potential in constructing ultra-dense and ultra-fast antiferromagnetic memory
that suits modern high-performance information technology. The electrical 180o
switching of N\'eel vector is a long-term goal for developing
electrical-controllable ... | 2401.17608v1 |
2024-02-29 | Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr$_{2}$RuO$_{4}$ via high-energy electron irradiation | In bulk Sr$_{2}$RuO$_{4}$, the strong sensitivity of the superconducting
transition temperature $T_{\text{c}}$ to nonmagnetic impurities provides robust
evidence for a superconducting order parameter that changes sign around the
Fermi surface. In superconducting epitaxial thin-film Sr$_{2}$RuO$_{4}$, the
relationship b... | 2402.19454v1 |
2017-07-09 | Ultrafast Epitaxial Growth of Metre-Sized Single-Crystal Graphene on Industrial Cu Foil | A foundation of the modern technology that uses single-crystal silicon has
been the growth of high-quality single-crystal Si ingots with diameters up to
12 inches or larger. For many applications of graphene, large-area high-quality
(ideally of single-crystal) material will be enabling. Since the first growth
on copper... | 1707.02512v1 |
2020-06-04 | Thermal conductivity of amorphous and crystalline GeTe thin film at high temperature: Experimental and theoretical study | Thermal transport properties bear a pivotal role in influencing the
performance of phase change memory (PCM) devices, in which the PCM operation
involves fast and reversible phase change between amorphous and crystalline
phases. In this paper, we present a systematic experimental and theoretical
study on the thermal co... | 2006.02625v1 |
2021-08-31 | Toward 100% Spin-Orbit Torque Efficiency with High Spin-Orbital Hall Conductivity Pt-Cr Alloys | 5d transition metal Pt is the canonical spin Hall material for efficient
generation of spin-orbit torques (SOTs) in Pt/ferromagnetic layer (FM)
heterostructures. However, for a long while with tremendous engineering
endeavors, the damping-like SOT efficiencies (${\xi}_{DL}$) of Pt and Pt alloys
have still been limited ... | 2108.13857v3 |
2024-01-05 | Signatures of room-temperature superconductivity emerging in two-dimensional domains within the new Bi/Pb-based ceramic cuprate superconductors at ambient pressure | We predict the possibility of realizing room-temperature superconductivity in
different 2D domains within the ceramic high-Tc cuprates at ambient pressure
and experimentally confirm this prediction of 2D room-temperature
superconductivity in the newly derived Bi/Pb-based ceramic cuprates containing
many grain boundarie... | 2401.02642v1 |
2024-04-17 | On-liquid-gallium surface synthesis of ultra-smooth conductive metal-organic framework thin films | Conductive metal-organic frameworks (MOFs) are emerging electroactive
materials for (opto-)electronics. However, it remains a great challenge to
achieve reliable MOF-based devices via the existing synthesis methods that are
compatible with the complementary metal-oxide-semiconductor technology, as the
surface roughness... | 2404.15357v1 |
2009-01-08 | Transport properties of Layer-Antiferromagnet CuCrS2: A possible thermoelectric material | The electrical, thermal conductivity and Seebeck coefficient of the quenched,
annealed and slowly cooled phases of the layer compound CuCrS2 have been
reported between 15K to 300K. We also confirm the antiferromagnetic transition
at 40K in them by our magnetic measurements between 2K and 300K. The crystal
flakes show a... | 0901.0977v2 |
2009-06-29 | A novel wear-resistant magnetic thin film material based on a $Ti_{1-x}Fe_xC_{1-y}$ nanocomposite alloy | In this study we report on the film growth and characterization of thin
(approximately 50 nm thick) Ti-Fe-C films deposited on amorphous quartz. The
experimental studies have been complemented by first principles density
functional theory (DFT) calculations. Upon annealing of as-prepared films, the
composition of the m... | 0906.5386v1 |
2010-11-25 | Resistive transition in disordered superconductors with varying intergrain coupling | The effect of disorder is investigated in granular superconductive materials
with strong and weak links. The transition is controlled by the interplay of
the \emph{tunneling} $g$ and \emph{intragrain} $g_{intr}$ conductances, which
depend on the strength of the intergrain coupling. For $g \ll g_{intr}$, the
transition ... | 1011.5607v1 |
2015-10-23 | Consequences of breaking time reversal symmetry in LaSb: a resistivity plateau and extreme magnetoresistance | Time reversal symmetry (TRS) protects the metallic surface modes of
topological insulators (TIs). The transport signature of robust metallic
surface modes of TIs is a plateau that arrests the exponential divergence of
the insulating bulk with decreasing temperature. This universal behavior is
observed in all TI candida... | 1510.06931v1 |
2015-11-30 | Electrical transport in nano-thick ZrTe$_5$ sheets: from three to two dimensions | ZrTe$_5$ is a newly discovered topological material. Shortly after a single
layer ZrTe$_5$ had been predicted to be a two-dimensional topological
insulator, a handful of experiments have been carried out on bulk ZrTe$_5$
crystals, which however suggest that its bulk form may be a three-dimensional
topological Dirac sem... | 1511.09315v2 |
2016-06-08 | Multi-orbital physics in lithium-molybdenum purple-bronze: going beyond paradigm | We investigate the role of inter-orbital fluctuations in the low energy
physics of a quasi-1D material - lithium molybdenum purple bronze (LMO). It is
an exceptional material that may provide us a long sought realization of a
Tomonaga-Luttinger liquid (TLL) physics, but its behaviour at temperatures of
the order of $T^... | 1606.02687v3 |
2016-10-08 | Enhancement of Impedance by Chromium Substitution and Correlation with DC Resistivity in Cobalt Ferrite | Chromium substituted cobalt ferrite with grain size less than the single
domain (approx. 70 nm) has been prepared by the sol-gel method. XRD analysis
reveals that the samples crystallize to cubic symmetry with spacegroup number
227. Two transition temperatures (TD (approx. 450 K) and TM (approx. 600 K)
have been observ... | 1610.02489v1 |
2018-08-08 | The viscosities of partially molten materials undergoing diffusion creep | Partially molten materials resist shearing and compaction. This resistance is
described by a fourth-rank effective viscosity tensor. When the tensor is
isotropic, two scalars determine the resistance: an effective shear and an
effective bulk viscosity. Here, calculations are presented of the effective
viscosity tensor ... | 1808.02734v2 |
2019-01-14 | Gate tunable giant anisotropic resistance in ultra-thin GaTe | In crystals, the duplication of atoms often follows different periodicity
along different directions. It thus gives rise to the so called anisotropy,
which is usually even more pronounced in two dimensional (2D) materials due to
the absence of $\textbf{z}$ dimension. Indeed, in the emerging 2D materials,
electrical ani... | 1901.04262v1 |
2020-01-27 | Graphene-based Nanoscale version of da Vinci's Reciprocal Structures | A reciprocal structure (RS) is a mechanical resistant structure formed by a
set of self-supporting elements satisfying certain conditions of structural
reciprocity (SR) . The first condition is that each element of the structure
has to support and be supported by the others. The second condition is that
these functions... | 2001.10027v2 |
2021-05-21 | Vanadium Dioxide Thin Films Synthesized Using Low Thermal Budget Atmospheric Oxidation | Vanadium dioxide is a complex oxide material, which shows large resistivity
and optical reflectance change while transitioning from the insulator to metal
phase at ~68 {\deg}C. In this work, we use a modified atmospheric thermal
oxidation method to oxidize RF-sputtered Vanadium films. Structural,
surface-morphology and... | 2105.10264v1 |
2023-08-18 | Magnetoresistance anomaly during the electrical triggering of a metal-insulator transition | Phase separation naturally occurs in a variety of magnetic materials and it
often has a major impact on both electric and magnetotransport properties. In
resistive switching systems, phase separation can be created on demand by
inducing local switching, which provides an opportunity to tune the electronic
and magnetic ... | 2308.09260v2 |
2024-01-30 | Picosecond transfer from short-term to long-term memory in analog antiferromagnetic memory device | Experiments in materials with a compensated ordering of magnetic moments have
demonstrated a potential for approaching the thermodynamic limit of the fastest
and least-dissipative operation of a digital memory bit. In addition, these
materials are very promising for a construction of energy-efficient analog
devices wit... | 2401.17370v1 |
2021-04-21 | Machine-Learning Assisted Optimization Strategies for Phase Change Materials Embedded within Electronic Packages | Leveraging the latent heat of phase change materials (PCMs) can reduce the
peak temperatures and transient variations in temperature in electronic
devices. But as the power levels increase, the thermal conduction pathway from
the heat source to the heat sink limits the effectiveness of these systems. In
this work, we e... | 2104.14433v1 |
2023-10-26 | A Critical Assessment of Electronic Structure Descriptors for Predicting Perovskite Catalytic Properties | The discovery and design of new materials which can efficiently catalyze the
oxygen reduction and evolution reactions at reduced temperatures is important
for facilitating the widespread adoption of fuel cell and electrolyzer
technologies. Numerous studies have produced correlations between catalytic
properties, such a... | 2310.17744v1 |
1998-11-11 | Superconducting Material Diagnostics using a Scanning Near-Field Microwave Microscope | We have developed scanning near-field microwave microscopes which can image
electrodynamic properties of superconducting materials on length scales down to
about 2 $\mu$m. The microscopes are capable of quantitative imaging of sheet
resistance of thin films, and surface topography. We demonstrate the utility of
the mic... | 9811158v1 |
2001-08-21 | Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C | We present optical conductivity data for Lu(Ni$_{1-x}$Co$_x$)$_2$B$_2$C over
a wide range of frequencies and temperatures for x=0 and x=0.09. Both materials
show evidence of being good Drude metals with the infrared data in reasonable
agreement with dc resistivity measurements at low frequencies. An absorption
threshol... | 0108333v1 |
2005-04-22 | Low field magneto-transport in La_0.7Ca_0.3MnO_3-PMMA composites synthesized by polymeric precursor route | A detailed investigation of the effect of PMMA on the structure,
microstructure and magneto-transport properties of manganite La_0.7Ca_0.3MnO_3
(LCMO) is presented. LCMO-PMMA nanostructured composites have been synthesized
by a unique polymeric sol-gel route, which leads to improved solubility of PMMA
in the LCMO matri... | 0504579v1 |
2007-03-01 | Magnetic effects at the interface between nonmagnetic oxides | The electronic reconstruction at the interface between two insulating oxides
can give rise to a highly-conductive interface. In analogy to this remarkable
interface-induced conductivity we show how, additionally, magnetism can be
induced at the interface between the otherwise nonmagnetic insulating
perovskites SrTiO3 a... | 0703028v2 |
2008-07-09 | Molecular Beam Epitaxy grown (Ga,Mn)(As,P) with perpendicular to plane magnetic easy axis | We present an experimental investigation of the magnetic, electrical and
structural properties of Ga0.94Mn0.06As1-yPy layers grown by molecular beam
epitaxy on GaAs substrates for y less than or equal to 0.3. X-ray diffraction
measurements reveal that the layers are under tensile strain which gives rise
to a magnetic e... | 0807.1469v1 |
2009-09-10 | Electric Pulse Induced Resistive Switching, Electronic Phase Separation, and Possible Superconductivity in a Mott insulator | Metal-insulator transitions (MIT) belong to a class of fascinating physical
phenomena, which includes superconductivity, and colossal magnetoresistance
(CMR), that are associated with drastic modifications of electrical resistance.
In transition metal compounds, MIT are often related to the presence of strong
electroni... | 0909.1978v1 |
2010-03-13 | Ferromagnetic Clusters in the Brownmillerite Bilayered Compounds Ca2.5-xLaxSr0.5GaMn2O8: An Approach to Achieve Layered Spintronics Materials | We report the effect of La-substitution on the magnetic and magnetotransport
properties of Brownmillerite-like bilayered compounds Ca2.5-xLaxSr0.5GaMn2O8 (x
= 0, 0.05, 0.075, and 0.1) by using dc-magnetization, resistivity and
magnetoresistance techniques. The Rietveld analysis of the room temperature
x-ray diffraction... | 1003.2685v1 |
2013-07-24 | Large resistivity change and phase transition in LiMnAs | Antiferromagnetic semiconductors are new alternative materials for spintronic
applications and spin valves. In this work, we report a detailed investigation
of two antiferromagnetic semiconductors AMnAs (A = Li, LaO), which are
isostructural to the well-known LiFeAs and LaOFeAs superconductors. Here we
present a compar... | 1307.6404v4 |
2014-03-31 | Investigation of Complex Impedance and Modulus Properties of Nd Doped 0.5BiFeO3-0.5PbTiO3 Multiferroic Composites | 0.5BiNdxFe1-xO3-0.5PbTiO3 (x=0.05, 0.10, 0.15, 0.20) composites were
successfully synthesized by a solid state reaction technique. At room
temperature X-ray diffraction shows tetragonal structure for all concentrations
of Nd doped 0.5BiFeO3-0.5PbTiO3 composites. The nature of Nyquist plot confirms
the presence of bulk ... | 1403.7981v1 |
2014-04-09 | A new first-principles calculation of field-dependent RF surface impedance of BCS superconductor and application to SRF cavities | There is a need to better understand the intrinsic limit of radiofrequency
(RF) surface impedance that determines the performance of superconducting RF
cavities in particle accelerators. Here we present a field-dependent derivation
of Mattis-Bardeen (M-B) theory of the RF surface impedance of BCS
superconductors based ... | 1404.2523v1 |
2014-11-25 | Computing with spins and magnets | The possible use of spin and magnets in place of charge and capacitors to
store and process information is well known. Magnetic tunnel junctions are
being widely investigated and developed for magnetic random access memories.
These are two terminal devices that change their resistance based on switchable
magnetization ... | 1411.6960v1 |
2015-05-22 | Direct Method for Calculating Temperature-Dependent Transport Properties | We show how temperature-induced disorder can be combined in a direct way with
first-principles scattering theory to study diffusive transport in real
materials. Excellent (good) agreement with experiment is found for the
resistivity of Cu, Pd, Pt (and Fe) when lattice (and spin) disorder are
calculated from first princ... | 1505.06231v1 |
2015-11-04 | Numerical Calculations of Wake Fields and Impedances of LHC Collimators' Real Structures | The LHC collimators have very complicated mechanical designs including
movable jaws made of higly resistive materials, ferrite materials, tiny RF
contacts. Since the jaws are moved very close to the circulating beams their
contribution in the overall LHC coupling impedance is dominant, with respect to
other machine com... | 1511.01236v1 |
2016-04-19 | Metallicity and conductivity crossover in white light illuminated CH$_3$NH$_3$PbI$_3$ perovskite | The intrinsic d.c. electrical resistivity ($\rho$) - measurable on single
crystals only - is often the quantity first revealing the properties of a given
material. In the case of CH$_3$NH$_3$PbI$_3$ perovskite measuring $\rho$ under
white light illumination provides insight into the coexistence of extended and
shallow ... | 1604.05637v1 |
2016-05-13 | Quantifying structure-property relationships during resistance spot welding of an aluminum 6061-T6 joint | Microstructure-property relationships of resistance spot welded 6061-T6
aluminum alloy lap joints were investigated via mechanical testing and
microscopy techniques. Quasi-static tensile and novel shear punch tests were
employed to measure the mechanical properties of the distinct weld regions.
Quasi-static tensile and... | 1605.04251v1 |
2016-06-17 | Electronic ground state of MnB$_{4}$ | Recent studies have dealt with the electronic and magnetic ground state
properties of the tetraboride material MnB$_4$. So far, however, the ground
state properties could not be established unambiguously. Therefore, here we
present an experimental study on single-crystalline MnB$_4$ by means of
resistivity and magnetiz... | 1606.05484v3 |
2016-12-15 | Superconductivity above 500 K in conductors made by bringing n-alkane into contact with graphite | In 1986, a cuprate superconductor (Ba-La-Cu-O system) having a critical
temperature which goes over the BCS limit (~30 K) was discovered and then a
cuprate superconductor (Y-Ba-Cu-O system) with a critical temperature higher
than 77 K was discovered. Furthermore, a Hg-based cuprate with a critical
temperature of 133 K ... | 1612.05294v1 |
2017-02-20 | Gate Tunable Magneto-resistance of Ultra-Thin WTe2 Devices | In this work, the magneto-resistance (MR) of ultra-thin WTe2/BN
heterostructures far away from electron-hole equilibrium is measured. The
change of MR of such devices is found to be determined largely by a single
tunable parameter, i.e. the amount of imbalance between electrons and holes. We
also found that the magneto... | 1702.05876v1 |
2017-10-05 | Multi-scale Modeling of Plasticity Nearby Precipitates in Nanostructured Materials | Precipitation strengthening is one of the most effective methods to design
alloys with the desired combination of strength and ductility. The main
mechanism of strengthening is generally known to be the interaction between
dislocations and precipitates. When a dislocation encounters a precipitate, it
bends and therefor... | 1710.02075v3 |
2018-05-03 | Enhanced Electron Transport in Thin Copper Films via Atomic-Layer Materials Capping | Using first-principles calculations based on density functional theory and
non-equilibrium Green's functions, we characterized the effect of surface
termination on the electronic transport properties of nanoscale Cu slabs. With
ideal, clean (111) surfaces and oxidized ones as baselines we explore the
effect of capping ... | 1805.01517v1 |
2018-06-07 | On the magnetic and electronic properties of NpPdSn | We have studied NpPdSn by means of the heat capacity, electrical resistivity,
Seebeck and Hall effect, $^{237}$Np M\"{o}ssbauer spectroscopy, and neutron
diffraction measurements in the temperature range 2-300 K and under magnetic
fields up to 14 T. NpPdSn orders antiferromagnetically below the N\'eel
temperature $T_N$... | 1806.02879v1 |
2019-09-06 | Unveiling multiferroic proximity effect in graphene | We demonstrate that electronic and magnetic properties of graphene can be
tuned via proximity of multiferroic substrate. Our first-principles
calculations performed both with and without spin-orbit coupling clearly show
that by contacting graphene with bismuth ferrite BiFeO$_3$ (BFO) film, the
spin-dependent electronic... | 1909.02844v1 |
2017-01-27 | Strain-modulated Bandgap and Piezo-resistive Effect in Black Phosphorus Field-effect Transistors | Energy bandgap largely determines the optical and electronic properties of a
semiconductor. Variable bandgap therefore makes versatile functionality
possible in a single material. In layered material black phosphorus, the
bandgap can be modulated by the number of layers; as a result, few-layer black
phosphorus has disc... | 1701.08041v1 |
2019-07-27 | Microwave derived monoclinic Ba1-xSnxNb2O6 materials as an alternative of ITO | Microwave synthesis was optimized for preparing novel monoclinic Tin-doped
Barium Niobate ceramics (Ba1-xSnxNb2O6; x= 0.0, 0.01, 0.05, 0.1, 0.2, 0.3) BSN.
The intensity of monoclinic phase formation was observed to decrease on
increasing tin as dopant indicating decreased crystallinity. Strained
crystalline phase was o... | 1907.11946v1 |
2019-04-24 | Progressive amorphization of GeSbTe phase-change material under electron beam irradiation | Fast and reversible phase transitions in chalcogenide phase-change materials
(PCMs), in particular, Ge-Sb-Te compounds, are not only of fundamental
interests, but also make PCMs based random access memory (PRAM) a leading
candidate for non-volatile memory and neuromorphic computing devices. To RESET
the memory cell, cr... | 1904.10601v2 |
2015-06-02 | Nonmonotonic fracture behavior of polymer nanocomposites | Polymer composite materials are widely used for their exceptional mechanical
properties, notably their ability to resist large deformations. Here we examine
the failure stress and strain of rubbers reinforced by varying amounts of
nano-sized silica particles. We find that small amounts of silica increase the
fracture s... | 1506.00832v1 |
2015-07-23 | Tuning bad metal and non-Fermi liquid behavior in a Mott material: rare earth nickelate thin films | Resistances that exceed the Mott-Ioffe-Regel limit, known as bad metal
behavior, and non-Fermi liquid behavior are ubiquitous features of the normal
state of many strongly correlated materials. Here we establish the conditions
that lead to bad metal and non-Fermi liquid phases in NdNiO3, which exhibits a
prototype, ban... | 1507.06619v1 |
2018-07-17 | Current jetting distorted planar Hall effect in a Weyl semimetal with ultrahigh mobility | A giant planar Hall effect (PHE) and anisotropic magnetoresistance (AMR) is
observed in TaP, a nonmagnetic Weyl semimetal with ultrahigh mobility. The
perpendicular resistivity (i.e., the planar magnetic field applied normal to
the current) far exceeds the zero-field resistivity, which thus rules out the
possible origi... | 1807.06229v3 |
2019-01-03 | Realization of Kondo chain in CeCo$_2$Ga$_8$ | We revisited the anisotropy of the heavy-fermion material CeCo$_2$Ga$_8$ by
measuring the electrical resistivity and magnetic susceptibility along all the
principal $\mathbf{a}$-, $\mathbf{b}$- and $\mathbf{c}$-axes. Resistivity along
$\mathbf{c}$-axis ($\rho_c$) shows clear Kondo coherence below about 17 K,
while both... | 1901.00558v2 |
2019-01-04 | Experimental and Numerical Investigation of the Fracture Behavior of Particle Reinforced Alkali Activated Slag Mortars | This paper presents fracture response of alkali-activated slag (AAS) mortars
with up to 30% (by volume) of slag being replaced by waste iron powder which
contains a significant fraction of elongated particles. The elongated iron
particles act as micro-reinforcement and improve the crack resistance of AAS
mortars by inc... | 1901.01025v1 |
2019-10-17 | The grain-size effect on thermal conductivity of uranium dioxide | We have investigated the grain boundary scattering effect on the thermal
transport behavior of uranium dioxide (UO$_2$). The polycrystalline samples
having different grain-sizes (0.125, 1.8, and 7.2 $\mu$m) have been prepared by
spark plasma sintering technique and characterized by x-ray powder diffraction
(XRD), scann... | 1910.08014v1 |
2020-01-06 | Transport characteristics of type II Weyl semimetal MoTe2 thin films grown by chemical vapor deposition | Theoretical calculations and experimental observations show MoTe2 is a type
II Weyl semimetal, along with many members of transition metal dichalcogenides
family. We have grown highly crystalline large-area MoTe2 thin films on Si/SiO2
substrates by chemical vapor deposition. Very uniform, continuous, and smooth
films w... | 2001.01703v1 |
2020-05-11 | Skyrmion phase in MnSi on sapphire grown by a conventional sputtering | Topologically protected chiral skyrmion is an intriguing spin texture, which
has attracted much attention because of fundamental research and future
spintronic applications. MnSi with the non-centrosymmetric structure is
well-known material hosting skyrmion phase. To date, preparation of MnSi
crystals has been investig... | 2005.04841v1 |
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