publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2021-06-15 | Charge Carrier Transport in Iron Pyrite Thin Films: Disorder Induced Variable Range Hopping | The origin of p-type conductivity and the mechanism responsible for low
carrier mobility was investigated in pyrite (FeS2) thin films. Temperature
dependent resistivity measurements were performed on polycrystalline and
nanostructured thin films prepared by three different methods. Films have a
high hole density and lo... | 2106.08401v2 |
2021-06-24 | Epitaxial growth of Ruddlesden-Popper neodymium nickelates Nd$_{n+1}$Ni$_{n}$O$_{3n+1}$ (${n}$ = 1-5) | A series of Ruddlesden-Popper nickelates, Nd$_{n+1}$Ni$_{n}$O$_{3n+1}$ (${n}$
= 1-5), have been stabilized in thin film form using reactive molecular-beam
epitaxy. High crystalline quality has been verified by X-ray diffraction and
scanning transmission electron microscopy. X-ray photoelectron spectroscopy
indicates th... | 2106.12941v1 |
2021-07-28 | Narrow-gap semiconducting behavior in antiferromagnetic Eu$_{11}$InSb$_9$ | Here we investigate the thermodynamic and electronic properties of
Eu$_{11}$InSb$_9$ single crystals. Electrical transport data show that
Eu$_{11}$InSb$_9$ has a semiconducting ground state with a relatively narrow
band gap of $320$~meV. Magnetic susceptibility data reveal antiferromagnetic
order at low temperatures, w... | 2107.13145v1 |
2021-08-04 | Theory of Huge Thermoelectric Effect Based on Magnon Drag Mechanism: Application to Thin-Film Heusler Alloy | To understand the unexpectedly high thermoelectric performance observed in
the thin-film Heusler alloy Fe$_2$V$_{0.8}$W$_{0.2}$Al, we study the magnon
drag effect, generated by the tungsten based impurity band, as a possible
source of this enhancement, in analogy to the phonon drag observed in FeSb$_2$.
Assuming that t... | 2108.01880v1 |
2021-08-10 | Nature of electrons from oxygen vacancies and polar catastrophe at LaAlO3/SrTiO3 interfaces | The relative significance of quantum conductivity correction and magnetic
nature of electrons in understanding the intriguing low-temperature resistivity
minimum and negative magnetoresistance of the two-dimensional electron gas at
LaAlO3/SrTiO3 interfaces has been a long outstanding issue since its discovery.
Here we ... | 2108.04532v1 |
2021-08-19 | Chemomechanics: friend or foe of the "AND problem" of solid-state batteries? | Solid electrolytes are widely considered as the enabler of lithium metal
anodes for safe, durable, and high energy density rechargeable lithium-ion
batteries. Despite the promise, failure mechanisms associated with solid-state
batteries are not well-established, largely due to limited understanding of the
chemomechanic... | 2108.10150v2 |
2021-09-01 | Electrical switching of antiferromagnetic CoO | Pt across the Néel temperature | One of the most important challenges in antiferromagnetic spintronics is the
read-out of the N\'eel vector state. High current densities up to 10$^8$
Acm$^{-2}$ used in the electrical switching experiments cause notorious
difficulty in distinguishing between magnetic and thermal origins of the
electrical signals. To ov... | 2109.00293v2 |
2021-09-22 | Dynamic Behaviors and Training Effects in TiN/Ti/HfO$_x$/TiN Nanolayered Memristors with Controllable Quantized Conductance States: Implications for Quantum and Neuromorphic Computing Devices | Controllable quantized conductance states of TiN/Ti/HfO$_x$/TiN memristors
are realized with great precision through a pulse-mode reset procedure,
assisted with analytical differentiation of the condition of the set procedure,
which involves critical monitoring of the measured bias voltage. An intriguing
training effec... | 2109.10783v1 |
2021-09-27 | Strongly electron-correlated semimetal RuI$_3$ with a layered honeycomb structure | A polymorph of RuI$_3$ synthesized under high pressure was found to have a
two-layered honeycomb structure. The resistivity of RuI$_3$ exhibits a
semimetallic behavior, in contrast to insulating properties in
$\alpha$-RuCl$_3$. In addition, Pauli paramagnetic behavior was observed in the
temperature dependence of a mag... | 2109.12864v2 |
2021-10-12 | Single-component superconducting state in UTe2 at 2 K | UTe2 is a newly-discovered unconventional superconductor wherein
multicomponent topological superconductivity is anticipated based on the
presence of two superconducting transitions and time-reversal symmetry breaking
in the superconducting state. The observation of two superconducting
transitions, however, remains con... | 2110.06200v1 |
2021-10-13 | Large-Gap Quantum Spin Hall State and Temperature-Induced Lifshitz Transition in Bi4Br4 | Searching for new quantum spin Hall insulators with large fully opened energy
gap to overcome the thermal disturbance at room temperature has attracted
tremendous attention due to the one-dimensional (1D) spin-momentum locked
topological edge states serving as dissipationless channels for the practical
applications in ... | 2110.06658v1 |
2021-11-09 | Weak antilocalization and Shubnikov-de Haas oscillations in CaCuSb single crystal | Quantum oscillations in both linear and Hall resistivities and weak
antilocalization (WAL) are barely observed in bulk single crystals. Here we
report the transport properties of a CaCuSb single crystal that crystallizes in
the hexagonal crystal structure. The magnetotransport studies reveal WAL and
Shubnikov-de Haas (... | 2111.04996v1 |
2021-11-29 | High-Speed Light Focusing through Scattering Medium by Cooperatively Accelerated Genetic Algorithm | We develop an accelerated Genetic Algorithm (GA) system constructed by the
cooperation of field-programmable gate array (FPGA) and optimized parameters of
the GA. We found the enhanced decay of mutation rate makes convergence of the
GA much faster, enabling the parameter-induced acceleration of the GA.
Furthermore, the... | 2111.14916v1 |
2021-12-01 | Atomistic simulations of twin boundary effect on the crack growth behaviour in BCC Fe | In this paper, the effect of twin boundaries on the crack growth behaviour of
single crystal BCC Fe has been investigated using molecular dynamics
simulations. The growth of an atomically sharp crack with an orientation of
(111)$<$110$>$ (crack plane/crack front) has been studied under mode-I loading
at constant strain... | 2112.00354v1 |
2022-01-10 | Phase Boundary Segregation in Multicomponent Alloys: A Diffuse-Interface Thermodynamic Model | Microalloying elements tend to segregate to the matrix-precipitate phase
boundaries to reduce the interfacial energy. The segregation mechanism is
emerging as a novel design strategy for developing precipitation-hardened
alloys with significantly improved coarsening resistance for high temperature
applications. In this... | 2201.03117v1 |
2022-03-09 | Magnetotransport due to conductivity fluctuations in non-magnetic ZrTe2 nanoplates | Transition metal dichalcogenides with nontrivial band structures exhibit
various fascinating physical properties and have sparked intensively research
interest. Here, we performed systematic magnetotransport measurements on
mechanical exfoliation prepared ZrTe2 nanoplates. We revealed that the negative
longitudinal mag... | 2203.04486v1 |
2022-03-11 | Ultrafast intrinsic optical-to-electrical conversion dynamics in graphene photodetector | Optical-to-electrical (O-E) conversion in graphene is a central phenomenon
for realizing anticipated ultrafast and low-power-consumption information
technologies. However, revealing its mechanism and intrinsic time scale require
uncharted terahertz (THz) electronics and device architectures. Here, we
succeeded in resol... | 2203.05752v1 |
2022-03-14 | Little-Parks like oscillations in lightly doped cuprate superconductors | Understanding the rich and competing electronic orders in cuprate
superconductors may provide important insight into the mechanism of
high-temperature superconductivity. Here, by measuring Bi2Sr2CaCu2O8+x in the
extremely underdoped regime, we obtain evidence for a distinct type of
ordering, which manifests itself as r... | 2203.06971v1 |
2022-03-25 | Hydrodynamic Interactions Between Charged and Uncharged Brownian Colloids at a Fluid-Fluid Interface | Hypothesis: The collective dynamics and self-assembly of colloids floating at
a fluid/fluid interface is a balance between deterministic lateral interaction
forces, viscous resistance to colloid motion along the surface and thermal
(Brownian) fluctuations. As the colloid size decreases, thermal forces become
important ... | 2203.13925v2 |
2022-04-02 | Upscaling of a reaction-diffusion-convection problem with exploding non-linear drift | We study a reaction-diffusion-convection problem with nonlinear drift posed
in a domain with periodically arranged obstacles. The non-linearity in the
drift is linked to the hydrodynamic limit of a totally asymmetric simple
exclusion process (TASEP) governing a population of interacting particles
crossing a domain with... | 2204.00931v1 |
2022-06-01 | Charge density wave and superconductivity in 6R-TaS2 | The layered transition metal dichalcogenide compounds 1T-TaS2 and 4H-TaS2 are
well known for their exotic properties, which include charge density wave,
superconductivity, Mott transition, etc., and lately quantum spin liquid. Here,
we report the magnetic, transport and transmission electron microscopy study of
the cha... | 2206.00281v3 |
2022-06-03 | Effects of charge dopants in quantum spin Hall materials | Semiconductors' sensitivity to electrostatic gating and doping accounts for
their widespread use in information communication and new energy technologies.
It is demonstrated quantitatively and with no adjustable parameters that the
presence of paramagnetic acceptor dopants elucidates a variety of hitherto
puzzling prop... | 2206.01613v3 |
2022-06-02 | Modeling Defect-Level Switching for Highly-Nonlinear and Hysteretic Electronic Devices | Many semiconductors feature defects with charge state transition levels that
can switch due to structure changes following defect ionization: we call this
defect-level switching (DLS). For example, DX centers in III-V compounds, and
oxygen vacancies in ZnO, can switch between deep and shallow donor
configurations, and ... | 2206.04108v1 |
2022-10-14 | The Electrical Property of Large Few Layer Graphene Flakes Obtained by Microwaves Assisted Exfoliation of Expanded Graphite | Few layer graphene (FLG) was synthesized by $\mu$-wave assisted exfoliation
of expanded graphite in toluene with an overall yield from c.a. 7% to 20%. A
significant difference in the absorption of $\mu$-waves by the expanded
graphite and toluene allowed a rapid heating of the medium. The number of FLG
sheets varies fro... | 2210.07627v1 |
2022-10-26 | Superior damage tolerance of fish skins | Skin is the largest organ of many animals. Its protective function against
hostile environments and predatorial attack makes high mechanical strength a
vital characteristic. Here, we measured the mechanical properties of bass fish
skins and found that fish skins are highly ductile with a rupture strain of up
to 30-40% ... | 2210.14651v1 |
2022-10-29 | Magnetotransport Properties and Fermi Surface Topology of Nodal line Semimetal InBi | In the present study, we have discussed the up-turn behavior in the
resistivity pattern of the topological nodal line semimetal InBi. We argued
that such nature could be generalized with a mathematical model, that can be
applied to any compounds exhibiting similar behavior. The extremely high
magnetoresistance (XMR) ha... | 2210.16527v1 |
2022-11-30 | Mixed Valence Pseudobrookite Al$_{1.75}$Ti$_{1.25}$O$_5$: High Temperature Phase Transitions, Magnetism and Resistivity | Dark blue single crystals of Al$_{1.75}^{3+}$ Ti$_{1.0}^{4+}$
Ti$_{0.25}^{3+}$O$_5$ were grown with a novel synthesis method based on the
reaction of a Ti3+/Ti4+ containing langbeinite melt and Al$_2$O$_3$. The
obtained needles crystallize in the pseudobrookite structure and undergo two
reversible phase transitions fro... | 2211.17252v2 |
2022-12-14 | Study of the V$_2^0$ state in neutron-irradiated silicon using photon-absorption measurements | Pieces of $n$-type silicon with 3.5 k$\Omega \cdot $cm resistivity have been
irradiated by reactor neutrons to fluences of (1, 5 and 10) $\times 10^{16}$
cm$^{-2}$. Using light-transmission measurements, the absorption coefficients
have been determined for photon energies, $E_\gamma $, between 0.62 and 1.30 eV
for the ... | 2212.07320v2 |
2023-01-18 | Schramm-Loewner evolution in 2d rigidity percolation | Amorphous solids may resist external deformation such as shear or compression
while they do not present any long-range translational order or symmetry at the
microscopic scale. Yet, it was recently discovered that, when they become
rigid, such materials acquire a high degree of symmetry hidden in the disorder
fluctuati... | 2301.07614v2 |
2023-01-26 | 3D-imaging of Printed Nanostructured Networks using High-resolution FIB-SEM Nanotomography | Networks of solution-processed nanomaterials are important for multiple
applications in electronics, sensing and energy storage/generation. While it is
known that network morphology plays a dominant role in determining the physical
properties of printed networks, it remains difficult to quantify network
structure. Here... | 2301.11046v1 |
2023-03-08 | Optical rogue waves in spheroids of tumor cells | Rogue waves are intense and unexpected wavepackets ubiquitous in complex
systems. In optics, they are promising as robust and noise-resistant beams for
probing and manipulating the underlying material. Localizing large optical
power is crucial especially in biomedical systems, where, however, extremely
intense beams ha... | 2303.04553v1 |
2023-04-28 | Experimental observation of metallic states with different dimensionality in a quasi-1D charge density wave compound | TaTe$_4$ is a quasi-1D tetrachalcogenide that exhibits a CDW instability
caused by a periodic lattice distortion. Recently, pressure-induced
superconductivity has been achieved in this compound, revealing a competition
between these different ground states and making TaTe$_4$ very interesting for
fundamental studies. A... | 2305.00053v1 |
2023-05-15 | Magnetic order and electronic transport properties in the Mn$_3$Al compound: the role of the structural state | Electronic transport and magnetic properties of bulk and rapid melt quenched
samples of the Mn$_3$Al Heusler alloy were studied. A correlation between the
magnetic and structural states was established. For a cast sample, there is no
ferromagnetic moment, and the behavior of the magnetic susceptibility (break at
low te... | 2305.08646v1 |
2023-06-01 | Native defect association in beta-Ga2O3 enables room-temperature p-type conductivity | The room temperature hole conductivity of the ultra wide bandgap
semiconductor beta Ga2O3 is a pre-requisite for developing the next-generation
electronic and optoelectronic devices based on this oxide. In this work,
high-quality p-type beta-Ga2O3 thin films grown on r-plane sapphire substrate
by metalorganic chemical ... | 2306.01115v1 |
2023-06-07 | Phase formation in hole- and electron-doped rare-earth nickelate single crystals | The recent discovery of superconductivity in hole-doped infinite-layer
nickelates has triggered a great interest in the synthesis of novel nickelate
phases, which have primarily been examined in thin film samples. Here, we
report the high-pressure optical floating zone (OFZ) growth of various
perovskite and perovskite-... | 2306.04157v1 |
2023-07-21 | Superexchange Interaction in Insulating EuZn$_{2}$P$_{2}$ | We report magnetic and transport properties of single-crystalline
EuZn$_{2}$P$_{2}$, which has trigonal CaAl$_2$Si$_2$-type crystal structure and
orders antiferromagnetically at $\approx$23~K. Easy $ab$-plane
magneto-crystalline anisotropy was confirmed from the magnetization isotherms,
measured with a magnetic field a... | 2307.11924v1 |
2023-08-04 | Learning to Shape by Grinding: Cutting-surface-aware Model-based Reinforcement Learning | Object shaping by grinding is a crucial industrial process in which a
rotating grinding belt removes material. Object-shape transition models are
essential to achieving automation by robots; however, learning such a complex
model that depends on process conditions is challenging because it requires a
significant amount... | 2308.02150v1 |
2023-08-16 | Growth of millimeter-sized high-quality CuFeSe$_2$ single crystals by the molten salt method and study of their semiconducting behavior | An eutectic AlCl$_3$/KCl molten salt method in a horizontal configuration was
employed to grow millimeter-sized and composition homogeneous CuFeSe$_2$ single
crystals due to the continuous growth process in a temperature gradient induced
solution convection. The typical as-grown CuFeSe$_2$ single crystals in cubic
form... | 2308.08223v1 |
2023-08-25 | WSTac: Interactive Surface Perception based on Whisker-Inspired and Self-Illuminated Vision-Based Tactile Sensor | Modern Visual-Based Tactile Sensors (VBTSs) use cost-effective cameras to
track elastomer deformation, but struggle with ambient light interference.
Solutions typically involve using internal LEDs and blocking external light,
thus adding complexity. Creating a VBTS resistant to ambient light with just a
camera and an e... | 2308.13241v1 |
2023-09-03 | Validation of the Wiedemann-Franz Law in solid and molten tungsten above 2000 K through thermal conductivity measurements via steady state temperature differential radiometry | We measure the thermal conductivity of solid and molten tungsten using Steady
State Temperature Differential Radiometry. We demonstrate that the thermal
conductivity can be well described by application of Wiedemann-Franz Law to
electrical resistivity data, thus suggesting the validity of Wiedemann-Franz
Law to capture... | 2309.01062v1 |
2023-10-05 | Demonstration of a monocrystalline GaAs-$β$-Ga$_2$O$_3$ p-n heterojunction | In this work, we report the fabrication and characterizations of a
monocrystalline GaAs/$\beta$-Ga$_2$O$_3$ p-n heterojunction by employing
semiconductor grafting technology. The heterojunction was created by lifting
off and transfer printing a p-type GaAs single crystal nanomembrane to an
Al$_2$O$_3$-coated n-type$\be... | 2310.03886v1 |
2023-11-03 | Effects of Cr content on ion-irradiation hardening of FeCrAl ODS ferritic steels with 9 wt\% Al | FeCrAl ODS steels for accident tolerant fuel claddings are designed to bear
high-Cr and Al for enhancing oxidation resistance. In this study, we
investigated the effects of Cr content on ion-irradiation hardening of three
ODS ferritic steels with different Cr contents added with 9 wt\% Al, Fe12Cr9Al
(SP12), Fe15Cr9Al (... | 2311.01879v1 |
2023-11-11 | Evidence of Ordering in Cu-Ni Alloys from Experimental Electronic Entropy Measurements | Phase diagrams exhibiting extended solid-solution and lens-like melting are
often reproduced using ideal solutions, where ideal mixing considers a fully
random configurational entropy of mixing. In the field of irreversible
thermodynamics, experimental measurements of the composition variation of
high-temperature elect... | 2311.06603v2 |
2023-11-12 | First-principles pressure dependent investigation of the physical properties of KB2H8: a prospective high-TC superconductor | Using the density functional theory (DFT) based first-principles
investigation, the structural, mechanical, hardness, elastic anisotropy,
optoelectronic, and thermal properties of cubic KB2H8 have been studied within
the uniform pressure range of 0 - 24 GPa. The calculated structural parameters
are in good agreement wi... | 2311.06709v1 |
2023-12-08 | Gate-controlled neuromorphic functional transition in an electrochemical graphene transistor | Neuromorphic devices have gained significant attention as potential building
blocks for the next generation of computing technologies owing to their ability
to emulate the functionalities of biological nervous systems. The essential
components in artificial neural network such as synapses and neurons are
predominantly ... | 2312.04934v2 |
2023-12-20 | Collective dynamics and long-range order in thermal neuristor networks | In the pursuit of scalable and energy-efficient neuromorphic devices, recent
research has unveiled a novel category of spiking oscillators, termed "thermal
neuristors". These devices function via thermal interactions among neighboring
vanadium dioxide resistive memories, emulating biological neuronal behavior.
Here, we... | 2312.12899v2 |
2024-01-30 | Momentum Matching for 2D-3D Heterogeneous Ohmic van der Waals Contact | Construction of ohmic contact is a long-standing challenge encountered by
two-dimensional (2D) device fabrication and integration. van der Waals
contacts, as a new solution for 2D contact construction, can effectively
eliminate issues, such as Fermi-level pining and formation of Schottky barrier.
Nevertheless, current ... | 2401.17114v1 |
2024-02-11 | Langmuir-like model of dilute impurities in concentrated solid solutions | High-entropy alloys have drawn recent interest for their promising mechanical
properties and irradiation resistance. Various properties, namely transport
properties, are controlled by point defect concentration, which must be known
before performing atomistic simulations to compute transport coefficients. In
this work,... | 2402.07324v1 |
2024-02-28 | Strange metal in the doped Hubbard model via percolation | Many strongly correlated systems, including high-temperature superconductors
such as the cuprates, exhibit strange metallic behavior in certain parameter
regimes characterized by anomalous transport properties that are irreconcilable
with a Fermi-liquid-like description in terms of quasiparticles. The Hubbard
model is ... | 2402.18626v2 |
2024-03-25 | Facile synthesis of micro-flower NiCo2O4 assembled by nanosheets efficient for electrocatalysis of water | Effective regulation of the morphology of transition metal spinel structures
is crucial for creating efficient and stable bifunctional catalysts for
electrocatalysis of water. In this work, micro-flower NiCo2O4 (F-NCO) assembled
by nanosheets via a chemical template method for the simultaneous promotion of
hydrogen evo... | 2403.17744v1 |
2024-04-30 | Aluminum nuclear demagnetization refrigerator for powerful continuous cooling | Many laboratories routinely cool samples to 10 mK, but relatively few can
cool condensed matter below 1 mK. Easy access to the microkelvin range would
propel fields such as quantum sensors and quantum materials. Such temperatures
are achieved with adiabatic nuclear demagnetization. Existing nuclear
demagnetization refr... | 2404.19352v1 |
2024-05-10 | Effects of vortex and anti-vortex excitations in underdoped Bi-2223 bulk single crystals | To gain insights into mechanisms underlying superconducting transition in
copper oxide high-transition temperature ($T_c$) superconductors, we studied
transport properties of underdoped Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+\delta}$
(Bi-2223) bulk single crystals. The power exponent $\alpha$ ($V \propto
I^{\alpha}$) reached 3... | 2405.06272v1 |
2024-05-15 | Unraveling impacts of polycrystalline microstructures on ionic conductivity of ceramic electrolytes by computational homogenization and machine learning | The ionic conductivity at the grain boundaries (GBs) in oxide ceramics is
typically several orders of magnitude lower than that within the grain
interior. This detrimental GB effect is the main bottleneck for designing
high-performance ceramic electrolytes intended for use in solid-state
Lithium-ion batteries, fuel cel... | 2405.09227v1 |
2024-05-20 | High-Mobility Carriers in Epitaxial IrO2 Films Grown using Hybrid Molecular Beam Epitaxy | Binary rutile oxides of 5d metals such as IrO2, stand out as a paradox due to
limited experimental studies despite the rich predicted quantum phenomena.
Here, we investigate the electrical transport properties of IrO2 by engineering
epitaxial thin films grown via hybrid molecular beam epitaxy. Our findings
reveal phono... | 2405.11716v1 |
2024-05-21 | A single crystal study of Kagome metals U$_2$Mn$_3$Ge and U$_2$Fe$_3$Ge | Single crystals of U$_2$Mn$_3$Ge and and U$_2$Fe$_3$Ge with a Kagome lattice
structure were synthesized using a high-temperature self-flux crystal growth
method. The physical properties of these crystals were characterized through
measurements of resistivity, magnetism, and specific heat. U$_2$Fe$_3$Ge
exhibits ferroma... | 2405.12905v1 |
2007-07-30 | Control of the Casimir force by the modification of dielectric properties with light | The experimental demonstration of the modification of the Casimir force
between a gold coated sphere and a single-crystal Si membrane by light pulses
is performed. The specially designed and fabricated Si membrane was irradiated
with 514 nm laser pulses of 5 ms width in high vacuum leading to a change of
the charge-car... | 0707.4390v1 |
2014-09-03 | The influence of the Al stabilizer layer thickness on the normal zone propagation velocity in high current superconductors | The stability of high-current superconductors is challenging in the design of
superconducting magnets. When the stability requirements are fulfilled, the
protection against a quench must still be considered. A main factor in the
design of quench protection systems is the resistance growth rate in the magnet
following a... | 1409.1186v1 |
2020-01-10 | A barrier/seed system for electroless metallization on complex surfaces using (aminomethylaminoethyl)phenethyltrimethoxysilane self-assembled films | High frequency signals propagate along the edges of conductors. If the
conductors are electroplated, then the seed layer forms at least one edge, so
care must be taken to insure the electrical quality of these layers. In this
work, we study the initial quality of SAM-based seed layers that are compatible
with complex s... | 2001.03295v1 |
2022-04-04 | Exceptional fracture toughness of CrCoNi-based medium- and high-entropy alloys close to liquid helium temperatures | Medium- and high-entropy alloys based on the CrCoNi-system have been shown to
display outstanding strength, tensile ductility and fracture toughness
(damage-tolerance properties), especially at cryogenic temperatures. Here we
examine the JIc and (back-calculated) KJIc fracture toughness values of the
face-centered cubi... | 2204.01635v1 |
2023-10-16 | Electronic Transport and Fermi Surface Topology of Zintl phase Dirac Semimetal SrZn2Ge2 | We report a comprehensive study on the electronic transport properties of
SrZn$_2$Ge$_2$ single crystals. The in-plane electrical resistivity of the
compound exhibits linear temperature dependence for 80 K < T < 300 K, and T^2
dependence below 40 K, consistent with the Fermi liquid behavior. Both the
transverse and lon... | 2310.10621v2 |
2023-06-24 | High Strength Refractory AlHfNbTiV B2 High Entropy Alloys with High Fracture Strains | We demonstrate the development of a series of refractory high-entropy alloys
containing aluminum AlRHEAs in the ordered BCC-B2 phase by varying the aluminum
content within 10 to 25 atomic percent, with the goal of high strength and good
ductility synergy. The AlRHEAs obtained are found to show promising potential
for h... | 2306.14057v2 |
1998-04-04 | Ohmic Decay of Magnetic Fields due to non-spherical accretion in the Crusts of Neutron Stars | We consider magnetic field evolution of neutron stars during polar-cap
accretion. The size of the polar cap increases as the field decays, and is set
by the last open field line before the accretion disk. Below the polar cap we
find the temperature to be so high that electron-phonon scattering dominates
the resistivity... | 9804047v1 |
2000-01-10 | The Effect of Resistivity on the Nonlinear Stage of the Magnetorotational Instability in Accretion Disks | We present three-dimensional magnetohydrodynamic simulations of the nonlinear
evolution of the magnetorotational instability (MRI) with a non-zero Ohmic
resistivity. The properties of the saturated state depend on the initial
magnetic field configuration. In simulations with an initial uniform vertical
field, the MRI i... | 0001164v1 |
1998-10-15 | The Quantized Hall Insulator: A New Insulator in Two-Dimensions | Quite generally, an insulator is theoretically defined by a vanishing
conductivity tensor at the absolute zero of temperature. In classical
insulators, such as band insulators, vanishing conductivities lead to diverging
resistivities. In other insulators, in particular when a high magnetic field
(B) is added, it is pos... | 9810172v1 |
1999-03-05 | Comment on ``Evidence for Anisotropic State of Two-Dimensional Electrons in High Landau Levels'' | In a recent letter M. Lilly et al [PRL 82, 394 (1999)] have shown that a
highly anisotropic state can arise in certain two dimensional electron systems.
In the large square samples studied, resistances measured in the two
perpendicular directions are found to have a ratio that may be 60 or larger at
low temperature and... | 9903086v3 |
1999-12-01 | Fractional-flux Little-Parks resistance oscillations in disordered superconducting Au$_{0.7}$In$_{0.3}$ cylinders | Resistance of disordered superconducting Au$_{0.7}$In$_{0.3}$ cylindrical
films was measured as a function of applied magnetic field. In the
high-temperature part of the superconducting transition regime, the resistance
oscillated with a period of $h/2e$ in the unit of the enclosed magnetic flux.
However, at lower temp... | 9912003v3 |
2000-04-05 | Linear response conductance and magneto-resistance of ferromagnetic single-electron transistors | The current through ferromagnetic single-electron transistors (SET's) is
considered. Using path integrals the linear response conductance is formulated
as a function of the tunnel conductance vs. quantum conductance and the
temperature vs. Coulomb charging energy. The magneto-resistance of
ferromagnet-normal metal-ferr... | 0004082v3 |
2001-09-10 | Transport properties of MgB2 | In this paper we present the resistivity, the Seebeck effect, and the thermal
conductivity measurements on a MgB2 sintered sample. Such transport properties
highlight the role of the junctions between the grains to a different extent.
In particular, the temperature dependence of resistivity may be explained with
the as... | 0109174v2 |
2003-10-22 | Unconventional superconductivity and normal state properties of epsilon-iron at high pressure | Following the discovery of superconductivity in epsilon-iron, subsequent
experiments hinted at non-Fermi liquid behaviour of the normal phase and
sensitive dependence of the superconducting state on disorder, both signatures
of unconventional pairing. We report further resistive measurements under
pressure of samples o... | 0310519v1 |
2003-12-10 | Phase slips in superconducting films with constrictions | A system of two coplanar superconducting films seamlessly connected by a
bridge is studied. We observe two distinct resistive transitions as the
temperature is reduced. The first one, occurring in the films, shows some
properties of the Berezinskii-Kosterlitz-Thouless (BKT) transition. The second
apparent transition (w... | 0312268v2 |
2004-10-04 | The "normal" state of superconducting cuprates might really be normal after all | High magnetic field studies of cuprate superconductors revealed a non-BCS
temperature dependence of the upper critical field $H_{c2}(T)$ determined
resistively by several groups.
These determinations caused some doubts on the grounds of both the
contrasting effect of the magnetic field on the in-plane and out-of-plan... | 0410075v1 |
2008-04-03 | Pressure-temperature Phase Diagram of Polycrystalline UCoGe Studied by Resistivity Measurement | Recently, coexistence of ferromagnetism (T_Curie = 2.8K) and
superconductivity (T_sc = 0.8K) has been reported in UCoGe, a compound close to
a ferromagnetic instability at ambient pressure P. Here we present resistivity
measurements under pressure on a UCoGe polycrystal. The phase diagram obtained
from resistivity meas... | 0804.0500v1 |
2008-08-18 | Upper critical field, anisotropy, and superconducting properties of Ba$_{1-x}$K$_x$Fe$_2$As$_2$ single crystals | The temperature dependent resistivity of Ba$_{1-x}$K$_x$Fe$_2$As$_2$ (x =
0.23, 0.25, 0.28 and 0.4) single crystals and the angle dependent resistivity
of superconducting Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ single crystals were
measured in magnetic fields up to 9 T. The measurements of temperature
dependent resistivity for... | 0808.2392v3 |
2009-04-28 | Complete pressure dependent phase diagrams for SrFe2As2 and BaFe2As2 | The temperature dependent electrical resistivity of single crystalline
SrFe2As2 and BaFe2As2 has been measured in a liquid medium, modified Bridgman
anvil cell for pressures in excess of 75 kbar. These data allow for the
determination of the pressure dependence of the higher temperature, structural
/ antiferromagnetic ... | 0904.4488v1 |
2011-01-17 | The magnetoresistance and Hall effect in CeFeAsO: a high magnetic field study | The longitudinal electrical resistivity and the transverse Hall resistivity
of CeFeAsO are simultaneously measured up to a magnetic field of 45T using the
facilities of pulsed magnetic field at Los Alamos. Distinct behaviour is
observed in both the magnetoresistance Rxx({\mu}0H) and the Hall resistance
Rxy({\mu}0H) whi... | 1101.3170v1 |
2013-07-23 | Nonlocal resistance and its fluctuations in microstructures of band-inverted HgTe/(Hg,Cd)Te quantum wells | We investigate experimentally transport in gated microsctructures containing
a band-inverted HgTe/Hg_{0.3}Cd_{0.7}Te quantum well. Measurements of nonlocal
resistances using many contacts prove that in the depletion regime the current
is carried by the edge channels, as expected for a two-dimensional topological
insula... | 1307.6115v3 |
2013-08-01 | Resistive Threshold Logic | We report a resistance based threshold logic family useful for mimicking
brain like large variable logic functions in VLSI. A universal Boolean logic
cell based on an analog resistive divider and threshold logic circuit is
presented. The resistive divider is implemented using memristors and provides
output voltage as a... | 1308.0090v1 |
2014-02-03 | The Effect of Magnetic Fields, Temperature and Current on the Resistivity of Bi-2223 High Temperature Superconductors | The electrical resistivity of polycrystalline Bi2Sr2Ca2Cu3O10-x (Bi-2223) was
measured vs. applied magnetic fields up to 0.45 T, applied currents up to 1 A,
and temperature from liquid nitrogen temperature (LN2) to room temperature. In
the lowest temperature region, the only truly zero resistivity was observed
when the... | 1402.0436v1 |
2014-10-06 | Low Resistance Metal Contacts to MoS2 Devices with Nickel-Etched-Graphene Electrodes | We report an approach to achieve low-resistance contacts to MoS2 transistors
with the intrinsic performance of the MoS2 channel preserved. Through a dry
transfer technique and a metal-catalyzed graphene treatment process,
nickel-etched-graphene electrodes were fabricated on MoS2 that yield contact
resistance as low as ... | 1410.1328v2 |
2017-06-14 | Kinetic theory of transport for inhomogeneous electron fluids | The interplay between electronic interactions and disorder is neglected in
the conventional Boltzmann theory of transport, yet can play an essential role
in determining the resistivity of unconventional metals. When quasiparticles
are long-lived, one can account for these intertwined effects by solving
spatially inhomo... | 1706.04621v3 |
2017-10-11 | Zero-field quantum anomalous Hall metrology as a step towards a universal quantum standard unit system | In the quantum anomalous Hall effect, the edge states of a ferromagnetically
doped topological insulator exhibit quantized Hall resistance and
dissipationless transport at zero magnetic field. Up to now, however, the
resistance was experimentally assessed with standard transport measurement
techniques which are difficu... | 1710.04090v1 |
2019-09-20 | Phenomenology of anomalous transport in disordered one-dimensional systems | We study anomalous transport arising in disordered one-dimensional spin
chains, specifically focusing on the subdiffusive transport typically found in
a phase preceding the many-body localization transition. Different types of
transport can be distinguished by the scaling of the average resistance with
the system's len... | 1909.09507v2 |
2019-06-29 | Ultra-Low Surface Resistance via Vacuum Heat Treatment of Superconducting Radiofrequency Cavities | We report on an effort to improve the performance of superconducting
radiofrequency cavities by the use of heat treatment in a temperature range
sufficient to dissociate the natural surface oxide. We find that the residual
resistance is significantly decreased, and we find an unexpected reduction in
the BCS resistance.... | 1907.00147v1 |
2012-03-21 | Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state | We report on a remarkably strong, and a rather sharp, photoresistance peak
originating from a dimensional magnetoplasmon resonance (MPR) in a high
mobility GaAs/AlGaAs quantum well driven by microwave radiation into a
zero-resistance state (ZRS). The analysis of the MPR signalreveals a negative
background providing exp... | 1203.4781v1 |
2015-04-21 | Radiation-induced resistance oscillations in a 2D hole gas: a demonstration of a universal effect | We report on a theoretical insight about the microwave-induced resistance
oscillations and zero resistance states when dealing with p-type semiconductors
and holes instead of electrons. We consider a high-mobility two-dimensional
hole gas hosted in a pure Ge/SiGe quantum well. Similarly to electrons we
obtain radiation... | 1504.05564v2 |
2019-10-03 | Modeling of Electrical Resistivity of Soil Based on Geotechnical Properties | Determining the relationship between the electrical resistivity of soil and
its geotechnical properties is an important engineering problem. This study
aims to develop methodology for finding the best model that can be used to
predict the electrical resistivity of soil, based on knowing its geotechnical
properties. The... | 1910.01325v1 |
2019-10-16 | $T$-linear resistivity in models with local self-energy | A theoretical understanding of the enigmatic linear-in-temperature ($T$)
resistivity, ubiquitous in strongly correlated metallic systems, has been a
long sought-after goal. Furthermore, the slope of this robust $T$-linear
resistivity is also observed to stay constant through crossovers between
different temperature reg... | 1910.07530v2 |
2020-05-28 | Contact resistance extraction of graphene FET technologies based on individual device characterization | Straightforward contact resistance extraction methods based on electrical
device characteristics are described and applied here to graphene field-effect
transistors from different technologies. The methods are an educated adaptation
of extraction procedures originally developed for conventional transistors by
exploitin... | 2005.13926v1 |
2021-10-29 | Influence of Device Geometry on Transport Properties of Topological Insulator Microflakes | In the transport studies of topological insulators, microflakes exfoliated
from bulk single crystals are often used because of the convenience in sample
preparation and the accessibility to high carrier mobilities. Here, based on
finite element analysis, we show that for the non-Hall-bar shaped topological
insulator sa... | 2110.15589v1 |
2022-04-14 | DC-coupled resistive silicon detectors for 4-D tracking | In this work, we introduce a new design concept: the DC-Coupled Resistive
Silicon Detectors, based on the LGAD technology. This new approach intends to
address a few known features of the first generation of AC-Coupled Resistive
Silicon Detectors (RSD). Our simulation exploits a fast hybrid approach based
on a combinat... | 2204.07226v1 |
2022-10-19 | Vector graphics extraction and analysis of electrical resistance data in Nature volume 586, pages 373-377 (2020) | In this paper, I present an analysis of the electrical resistance graphs in
Nature volume 586, pages 373-377 (2020), which reported the discovery of room
temperature superconductivity in a carbonaceous sulfur hydride and was
subsequently retracted on September 26th, 2022. I show that, over a single
temperature interval... | 2210.10766v1 |
2023-06-26 | Towards Optimal Effective Resistance Estimation | We provide new algorithms and conditional hardness for the problem of
estimating effective resistances in $n$-node $m$-edge undirected, expander
graphs. We provide an $\widetilde{O}(m\epsilon^{-1})$-time algorithm that
produces with high probability, an $\widetilde{O}(n\epsilon^{-1})$-bit sketch
from which the effectiv... | 2306.14820v1 |
2023-08-22 | Non-Hermitian topological ohmmeter | Measuring large electrical resistances forms an essential part of common
applications such as insulation testing, but suffers from a fundamental
problem: the larger the resistance, the less sensitive a canonical ohmmeter is.
Here we develop a conceptually different electronic sensor by exploiting the
topological proper... | 2308.11367v1 |
2019-09-12 | Analysis of RF losses and material characterization of samples removed from a Nb3Sn-coated superconducting RF cavity | Nb3Sn (Tc ~ 18 K and Hsh ~ 400 mT) is a prospective material to replace Nb
(Tc ~ 9 K and Hsh ~ 200 mT) in SRF accelerator cavities for significant cost
reduction and performance enhancement. Because of its material properties,
Nb3Sn is best employed as a thin film (coating) inside an already built RF
cavity structure. ... | 1909.05695v1 |
2020-02-27 | A simple approach to bulk bioinspired tough ceramics | The development of damage-resistant structural materials that can withstand
harsh environments is a major issue in materials science and engineering.
Bioinspired brick-and-mortar designs have recently demonstrated a range of
interesting mechanical properties in proof-of-concept studies. However,
reproducibility and sca... | 2003.11898v1 |
2021-10-09 | Fracture Diodes: Directional asymmetry of fracture toughness | Toughness describes the ability of a material to resist fracture or crack
propagation. It is demonstrated here that fracture toughness of a material can
be asymmetric, i.e., the resistance of a medium to a crack propagating from
right to left can be significantly different from that to a crack propagating
from left to ... | 2110.04613v1 |
2022-07-20 | Do thermoelectric generator modules degrade due to nickel diffusion | The paper shows by calculation that the diffusion of nickel even for 50 years
does not lead to degradation of thermoelectric generator modules. In the
process, we used the theory of composites to calculate the electrical contact
resistance, our own diffusion theory of electrical contact resistance, as well
as the metho... | 2207.12122v1 |
2023-03-10 | Engineering heat transport across epitaxial lattice-mismatched van der Waals heterointerfaces | Artificially engineered 2D materials offer unique physical properties for
thermal management, surpassing naturally occurring materials. Here, using van
der Waals epitaxy, we demonstrate the ability to engineer extremely insulating
ultra-thin thermal metamaterials based on crystalline lattice-mismatched
Bi2Se3/MoSe2 sup... | 2303.05808v1 |
2023-09-25 | Integrated bolometric photodetectors based on transparent conductive oxides from near- to mid-infrared wavelengths | On-chip photodetectors are essential components in optical communications as
they convert light into an electrical signal. Photobolometers are type of
photodetector that functions through a resistance change caused by electronic
temperature fluctuations upon light absorption. They are widely used in the
broad wavelengt... | 2309.14454v1 |
2023-10-04 | Current-driven magnetic resistance in van der Waals spin-filter antiferromagnetic tunnel junctions with MnBi$_2$Te$_4$ | The field of 2D magnetic materials has paved the way for the development of
spintronics and nanodevices with new functionalities. Utilizing
antiferromagnetic materials, in addition to layered van der Waals (vdW)
ferromagnetic materials, has garnered significant interest. In this work, we
present a theoretical investiga... | 2310.02830v1 |
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