publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2007-09-12 | Reducing the Possibility of Subjective Error in the Determination of the Structure-Function-Based Effective Thermal Conductivity of Boards | The thermal response function given to a unit-step dissipation accurately
characterizes the thermal system. Instead of the thermal response function the
so-called structure function describing three-dimensional as the equivalent
model of one-dimensional heat-spreading, created from the thermal response
function with th... | 0709.1863v1 |
2008-01-22 | Phase coherent transport in (Ga,Mn)As | Quantum interference effects and resulting quantum corrections of the
conductivity have been intensively studied in disordered conductors over the
last decades. The knowledge of phase coherence lengths and underlying dephasing
mechanisms are crucial to understand quantum corrections to the resistivity in
the different ... | 0801.3363v1 |
2008-08-03 | Use of a nanoindentation fatigue test to characterize the ductile-brittle transition | When considering grinding of minerals, scaling effect induces competition
between plastic deformation and fracture in brittle solids. The competition can
be sketched by a critical size of the material, which characterizes the
ductile-brittle transition. A first approach using Vickers indentation gives a
good approximat... | 0808.0329v1 |
2008-10-02 | Metallic conduction at organic charge-transfer interfaces | The electronic properties of interfaces between two different solids can
differ strikingly from those of the constituent materials. For instance,
metallic conductivity, and even superconductivity, have been recently
discovered at interfaces formed by insulating transition metal oxides. Here we
investigate interfaces be... | 0810.0361v1 |
2009-11-13 | Internal relaxation time in immersed particulate materials | We study the dynamics of the solid to liquid transition for a model material
made of elastic particles immersed in a viscous fluid. The interaction between
particle surfaces includes their viscous lubrication, a sharp repulsion when
they get closer than a tuned steric length and their elastic deflection induced
by thos... | 0911.2531v1 |
2010-02-18 | The influence of Ga$^+$-irradiation on the transport properties of mesoscopic conducting thin films | We studied the influence of 30keV Ga$^+$-ions -- commonly used in focused ion
beam (FIB) devices -- on the transport properties of thin crystalline graphite
flake, La$_{0.7}$Ca$_{0.3}$MnO$_3$ and Co thin films. The changes of the
electrical resistance were measured in-situ during irradiation and also the
temperature an... | 1002.3565v1 |
2010-09-24 | Photoemission induced gating of topological insulator | The recently discovered topological insulators exhibit topologically
protected metallic surface states which are interesting from the fundamental
point of view and could be useful for various applications if an appropriate
electronic gating can be realized. Our photoemission study of Cu intercalated
Bi2Se3 shows that t... | 1009.4855v2 |
2011-08-23 | Single-Crystal and Powder Neutron Diffraction Study of FeXMn1-XS Solid Solutions | FeXMn1-XS (0 <x< 0.3) synthesized on the basis of {\alpha}-MnS are the novel
Mott-type substances with the rock salt structure. Neutron diffraction study
shows that the shift of the Neel temperature of these materials from 150 (x =
0) to 200 K (x = 0.29) under the action of chemical pressure (x) is accompanied
by a dec... | 1108.4537v2 |
2012-02-11 | Temperature dependence of the conductivity of graphene on boron nitride | The substrate material of monolayer graphene influences the charge carrier
mobility by various mechanisms. At room temperature, the scattering of
conduction electrons by phonon modes localized at the substrate surface can
severely limit the charge carrier mobility. We here show that for substrates
made of the piezoelec... | 1202.2440v2 |
2012-10-15 | Theory of Charge Order and Heavy-Electron Formation in the Mixed-Valence Compound KNi$_2$Se$_2$ | The material KNi$_2$Se$_2$ has recently been shown to possess a number of
striking physical properties, many of which are apparently related to the mixed
valency of this system, in which there is on average one quasi-localized
electron per every two Ni sites. Remarkably, the material exhibits a charge
density wave (CDW... | 1210.4041v3 |
2012-10-24 | Magnetic phase diagram of CePt3B1-xSix | We present a study of the main bulk properties (susceptibility,
magnetization, resistivity and specific heat) of CePt_3B_(1-x)Si-x, an alloying
system that crystallizes in a noncentrosymmetric lattice, and derive the
magnetic phase diagram. The materials at the end point of the alloying series
have previously been stud... | 1210.6489v3 |
2013-04-26 | Preparation and characterization of Bismaleimide resin/titania nanocomposites via sol-gel process | Bismaleimide (BMI) resin/ titania nanocomposites were synthesized from
allylated-phenolic modified bismaleimide resin and TiO2 via the sol-gel process
of tetrabutyltitanate (Ti(OnBu)4, TBT). These nanocomposite materials were
characterized by FT-IR, XRD, FE-SEM, TGA and DMA. It was found that the
nano-scale TiO2 partic... | 1304.7082v1 |
2013-10-05 | Engineered spin-valve type magnetoresistance in Fe$_3$O$_4$-CoFe$_2$O$_4$ core-shell nanoparticles | Naturally occurring spin-valve-type magnetoresistance (SVMR), recently
observed in Sr2FeMoO6 samples, suggests the possibility of decoupling the
maximal resistance from the coercivity of the sample. Here we present the
evidence that SVMR can be engineered in specifically designed and fabricated
core-shell nanoparticle ... | 1310.1469v1 |
2013-10-23 | A simple method to characterize the electrical and mechanical properties of micro-fibers | A procedure to characterize the electrical and mechanical properties of
micro-fibers is presented here. As the required equipment can be found in many
teaching laboratories, it can be carried out by physics and
mechanical/electrical engineering students. The electrical resistivity, mass
density and Young's modulus of c... | 1310.6134v1 |
2014-07-31 | Quantum Criticality Based on Large Ising Spins: YbCo$_2$Ge$_4$ with New 1-2-4 Structure Type | We present a new type of quantum critical material YbCo$_2$Ge$_4$, having the
largest quantum-critical pseudospin size ever. The YbCo$_2$Ge$_4$-type
structure is new, forms in the orthorhombic $Cmcm$ system, and is related to
the well-known ThCr$_2$Si$_2$ structure. Heavy rare earth (Tm,Yb,Lu, or Y)
members are also po... | 1407.8274v1 |
2014-09-19 | Analysis of the internal heat losses in a thermoelectric generator | A 3D thermoelectric numerical model is used to investigate different internal
heat loss mechanisms for a thermoelectric generator with bismuth telluride p-
and n-legs. The model considers all thermoelectric effects, temperature
dependent material parameters and simultaneous convective, conductive and
radiative heat los... | 1409.6743v1 |
2015-01-17 | Superconductivity in the orthorhombic phase of thermoelectric CsPbxBi4-xTe6 with 0.3=<x=<1.0 | Experimental measurements clearly reveal the presence of bulk
superconductivity in the CsPbxBi4-xTe6 (0.3=<x=<1.0) materials, i.e. the first
member of the thermoelectric series of Cs[PbmBi3Te5+m], these materials have
the layered orthorhombic structure containing infinite anionic [PbBi3Te6]-
slabs separated with Cs+ ca... | 1501.04184v1 |
2015-01-22 | DFT+U simulation of the Ti${}_4$O${}_7$-TiO${}_2$ interface | The formation of conducting channels of Ti${}_4$O${}_7$ inside
TiO${}_2$-based memristors is believed to be the origin for the change in
electric resistivity of these devices. While the properties of the bulk
materials are reasonably known, the interface between them has not been studied
up to now mostly due to their d... | 1501.05564v1 |
2015-02-09 | A theory of finite deformation magneto-viscoelasticity | This paper deals with the mathematical modelling of large strain
magneto-viscoelastic deformations. Energy dissipation is assumed to occur both
due to the mechanical viscoelastic effects as well as the resistance offered by
the material to magnetisation. Existence of internal damping mechanisms in the
body is considere... | 1502.02482v1 |
2015-08-06 | Odd-parity magnetoresistance in pyrochlore iridate thin films with broken time-reversal symmetry | A new class of materials termed topological insulators have been intensively
investigated due to their unique Dirac surface state carrying dissipationless
edge spin currents. Recently, it has been theoretically proposed that the three
dimensional analogue of this type of band structure, the Weyl Semimetal phase,
is mat... | 1508.01318v1 |
2015-09-04 | Hall effect in the extremely large magnetoresistance semimetal WTe$_2$ | We systematically measured the Hall effect in the extremely large
magnetoresistance semimetal WTe$_2$. By carefully fitting the Hall resistivity
to a two-band model, the temperature dependencies of the carrier density and
mobility for both electron- and hole-type carriers were determined. We observed
a sudden increase ... | 1509.01463v2 |
2015-11-19 | `Ferroelectric' Metals Reexamined: Fundamental Mechanisms and Design Considerations for New Materials | The recent observation of a ferroelectric-like structural transition in
metallic LiOsO$_3$ has generated a flurry of interest in the properties of
polar metals. Such materials are thought to be rare because free electrons
screen out the long-range electrostatic forces that favor a polar structure
with a dipole moment i... | 1511.06187v2 |
2016-01-12 | Superconductivity in Tl_{0.6}Bi_{2}Te_{3} Derived from a Topological Insulator | Bulk superconductivity has been discovered in Tl_{0.6}Bi_{2}Te_{3}, which is
derived from the topological insulator Bi2Te3. The superconducting volume
fraction of up to 95% (determined from specific heat) with Tc of 2.28 K was
observed. The carriers are p-type with the density of ~1.8 x 10^{20} cm^{-3}.
Resistive trans... | 1601.02877v1 |
2016-05-06 | Intrinsic Negative Poisson's Ratio for Single-Layer Graphene | Negative Poisson's ratio (NPR) materials have drawn significant interest
because the enhanced toughness, shear resistance and vibration absorption that
typically are seen in auxetic materials may enable a range of novel
applications. In this work, we report that single-layer graphene exhibits an
intrinsic NPR, which is... | 1605.01827v2 |
2016-03-24 | Isotoxal star-shaped polygonal voids and rigid inclusions in nonuniform antiplane shear fields. Part II: Singularities, annihilation and invisibility | Notch stress intensity factors and stress intensity factors are obtained
analytically for isotoxal star-shaped polygonal voids and rigid inclusions (and
also for the corresponding limit cases of star-shaped cracks and stiffeners),
when loaded through remote inhomogeneous (self-equilibrated, polynomial)
antiplane shear ... | 1605.04942v1 |
2016-10-30 | Characteristics of Interlayer Tunneling Field Effect Transistors Computed by a "DFT-Bardeen" Method | Theoretical predictions are made for the current-voltage characteristics of
two-dimensional heterojunction interlayer tunneling field-effect transistors
(Thin-TFETs), focusing on the magnitude of the current that is achievable in
such devices. A theory based on the Bardeen tunneling method is employed, using
wavefuncti... | 1610.09695v1 |
2016-10-31 | Signature of Hanle Precession in Trilayer MoS2: Theory and Experiment | Valley-spin coupling in transition-metal dichalcogenides (TMDs) can result in
unusual spin transport behaviors under an external magnetic field. Nonlocal
resistance measured from 2D materials such as TMDs via electrical Hanle
experiments are predicted to exhibit nontrivial features, compared with results
from conventio... | 1611.00059v1 |
2016-11-23 | Electron interactions, spin-orbit coupling, intersite correlations in pyrochlore iridates | We perform combined density functional and dynamical mean-field calculations
to study the pyrochlore iridates Lu$_2$Ir$_2$O$_7$, Y$_2$Ir$_2$O$_7$ and
Eu$_2$Ir$_2$O$_7$. Both single-site and cluster dynamical mean-field
calculations are performed and spin-orbit coupling is included. Paramagnetic
metallic phases, antifer... | 1611.07997v2 |
2017-02-27 | Quantum critical scaling and fluctuations in Kondo lattice materials | We propose a new phenomenological framework for three classes of Kondo
lattice materials that incorporates the interplay between the fluctuations
associated with the antiferromagnetic quantum critical point and those produced
by the hybridization quantum critical point that marks the end of local moment
behavior. We sh... | 1702.08132v2 |
2017-06-30 | Two-Dimensional h-BN and MoS2 as Diffusion Barriers for Ultra-Scaled Copper Interconnects | Copper interconnects in modern integrated circuits require ultra-thin
barriers to prevent intermixing of Cu with surrounding dielectric materials.
Conventional barriers rely on metals like TaN, however their finite thickness
reduces the cross-sectional area and significantly increases the resistivity of
nanoscale inter... | 1706.10178v1 |
2017-08-31 | Nonmonotonic dependence of polymer glass mechanical response on chain bending stiffness | We investigate the mechanical properties of amorphous polymers by means of
coarse-grained simulations and nonaffine lattice dynamics theory. A small
increase of polymer chain bending stiffness leads first to softening of the
material, while hardening happens only upon further strengthening of the
backbones. This nonmon... | 1709.00024v2 |
2017-12-31 | Geometry Effects on Switching Currents in Superconducting Ultra Thin Films | Vortex dynamics is strongly connected with the mechanisms responsible for the
photon detection of superconducting devices. Indeed, the local suppression of
superconductivity by photon absorption may trigger vortex nucleation and motion
effects, which can make the superconducting state unstable. In addition,
scaling dow... | 1801.00306v1 |
2018-02-22 | Shear strength of wet granular materials: macroscopic cohesion and effective stress | Rheometric measurements on assemblies of wet polystyrene bead assemblies, in
steady uniform quasistatic shear flow, for varying liquid content within the
small saturation (pendular) range of isolated liquid bridges, are supplemented
with a systematic study by discrete numerical simulations. Numerical results
and experi... | 1802.08172v1 |
2018-09-12 | Elastoresistive and Elastocaloric Anomalies at Magnetic and Electronic-Nematic Critical Points | Using Ba(Fe$_{0.975}$Co$_{0.025}$)$_2$As$_{2}$ as an exemplar material
exhibiting second order electronic-nematic and antiferromagnetic transitions,
we present measurements that reveal anomalies in the elastoresistance
$\left(\frac{\partial \rho_{ij}}{\partial\varepsilon_{kl}}\right)$ and
elastocaloric effect $\left(\f... | 1809.04582v1 |
2018-09-17 | Electric-Field Control of Magnetic Order: From FeRh to Topological Antiferromagnetic Spintronics | Using an electric field instead of an electric current (or a magnetic field)
to tailor the electronic properties of magnetic materials is promising for
realizing ultralow energy-consuming memory devices because of the suppression
of Joule heating, especially when the devices are scaled to the nanoscale. In
the review, ... | 1809.06011v1 |
2017-03-02 | Morphology and properties evolution upon ring-opening polymerization during extrusion of cyclic butylene terephthalate and graphene-related-materials into thermally conductive nanocomposites | In this work, the study of thermal conductivity before and after in-situ
ring-opening polymerization of cyclic butylene terephthalate into poly
(butylene terephthalate) in presence of graphene-related materials (GRM) is
addressed, to gain insight in the modification of nanocomposites morphology
upon polymerization. Fiv... | 1703.00805v2 |
2015-05-18 | Unique opportunity to harness polarization in GaN to override the conventional power electronics figure-of-merits | Owing to the large breakdown electric field, wide bandgap semiconductors such
as SiC, GaN, Ga2O3 and diamond based power devices are the focus for next
generation power switching applications. The unipolar trade-off relationship
between the area specific-on resistance and breakdown voltage is often employed
to compare ... | 1505.04651v1 |
2015-05-21 | Impedance Matching of Atomic Thermal Interfaces Using Primitive Block Decomposition | We explore the physics of thermal impedance matching at the interface between
two dissimilar materials by controlling the properties of a single atomic mass
or bond. The maximum thermal current is transmitted between the materials when
we are able to decompose the entire heterostructure solely in terms of
primitive bui... | 1505.05564v1 |
2017-11-06 | On the relation between plasticity, friction, and geometry | Plasticity refers to thermodynamically irreversible deformation associated
with a change of configuration of materials. Friction is a phenomenological law
that describes the forces resisting sliding between two solids or across an
embedded dislocation. These two types of constitutive behaviors explain the
deformation o... | 1711.01954v2 |
2018-10-12 | Non-volatile ferroelectric memory effect in ultrathin α-In2Se3 | Recent experiments on layered {\alpha}-In2Se3 have confirmed its
room-temperature ferroelectricity under ambient condition. This observation
renders {\alpha}-In2Se3 an excellent platform for developing two-dimensional
(2D) layered-material based electronics with nonvolatile functionality. In this
letter, we demonstrate... | 1810.05328v1 |
2018-10-17 | From plastic flow to brittle fracture: role of microscopic friction in amorphous solids | Plasticity in soft amorphous materials typically involves collective
deformation patterns that emerge upon intense shearing. The microscopic basis
of amorphous plasticity has been commonly established through the notion of
"Eshelby"-type events, localized abrupt rearrangements that induce flow in the
surrounding materi... | 1810.07418v1 |
2018-10-17 | Modeling Heterogeneous Melting in Phase Change Memory Devices | We present thermodynamic crystallization and melting models and calculate
phase change velocities in $Ge_2 Sb_2 Te_5$ based on kinetic and thermodynamic
parameters. The calculated phase change velocities are strong functions of
grain size, with smaller grains beginning to melt at lower temperatures. Phase
change veloci... | 1810.07764v1 |
2018-11-08 | Magnetically-driven orbital-selective insulator-metal transition in double perovskite oxides | Interaction-driven metal-insulator transitions or Mott transitions
are widely observed in condensed-matter systems. In multi-orbital
systems, many-body physics is richer in which an orbital-selective
metal-insulator transition is an intriguing and unique
phenomenon. Here we use first-principles calculations to ... | 1811.03465v1 |
2018-11-08 | Giant anomalous Nernst effect in the magnetic Weyl semimetal Co3Sn2S2 | In ferromagnetic solids, even in absence of magnetic field, a transverse
voltage can be generated by a longitudinal temperature gradient. This
thermoelectric counterpart of the Anomalous Hall effect (AHE) is dubbed the
Anomalous Nernst effect (ANE). Expected to scale with spontaneous
magnetization, both these effects a... | 1811.03485v2 |
2018-11-23 | Extremely large magnetoresistance induced by hidden three-dimensional Dirac bands in nonmagnetic semimetal InBi | Extremely large positive magnetoresistance (XMR) was found in a nonmagnetic
semimetal InBi. Using several single crystals with different residual
resistivity ratios (RRRs), we revealed that the XMR strongly depended on the
RRR (sample quality). Assuming that there were no changes in effective mass m*
and carrier concen... | 1811.09383v2 |
2019-02-07 | In situ control of diamagnetism by electric current in Ca$_3$(Ru$_{1-x}$Ti$_x$)$_2$O$_7$ | Non-equilibrium steady state (NESS) conditions induced by DC current can
alter the physical properties of strongly correlated electron systems (SCES).
In this regard, it was recently shown that DC current can trigger novel
electronic states, such as current-induced diamagnetism, which cannot be
realized in equilibrium ... | 1902.02515v1 |
2019-05-15 | Unconventional Hall Effect induced by Berry Curvature | Berry phase and Berry curvature play a key role in the development of
topology in physics and do contribute to the transport properties in solid
state systems. In this paper, we report the finding of novel nonzero Hall
effect in topological material ZrTe5 flakes when in-plane magnetic field is
parallel and perpendicula... | 1905.06040v2 |
2020-02-13 | Guest-Tunable Dielectric Sensing Using a Single Crystal of HKUST-1 | There is rising interest on low-k dielectric materials based on porous
metal-organic frameworks (MOFs) for improved electrical insulation in
microelectronics. Herein, we demonstrate the concept of MOF dielectric sensor
built from a single crystal of HKUST-1. We study guest encapsulation effects of
polar and non-polar m... | 2002.05705v1 |
2020-04-08 | Nonreciprocal thermal transport in a multiferroic helimagnet | Breaking of spatial inversion symmetry (SIS) induces unique phenomena in
condensed matter. Besides the classic examples such as natural optical activity
and piezoelectricity, the spin-orbit interaction further enriches the effect of
SIS breaking, as exemplified by the Rashba effect. In particular, by combining
this sym... | 2004.03801v1 |
2012-01-13 | Ferroelectric PbTiO$_{3}$/SrRuO$_{3}$ superlattices with broken inversion symmetry | We have fabricated PbTiO$_{3}$/SrRuO$_{3}$ superlattices with ultra-thin
SrRuO$_{3}$ layers. Due to the superlattice geometry, the samples show a large
anisotropy in their electrical resistivity, which can be controlled by changing
the thickness of the PbTiO$_{3}$ layers. Therefore, along the ferroelectric
direction, S... | 1201.2893v2 |
2012-01-31 | Effect of starting materials on the superconducting properties of SmFeAsO1-xFx tapes | SmFeAsO1-xFx tapes were prepared using three kinds of starting materials. It
shows that the starting materials have an obvious effect on the impurity phases
in final superconducting tapes. Compared with the other samples, the samples
fabricated by SmAs, FeO, Fe2As, and SmF3 have the smallest arsenide impurity
phase and... | 1201.6522v1 |
2014-01-05 | Phase-coexistence and glass-like behavior in magnetic and dielectric solids with long range order | Phase-coexistence in the manganese-oxide compounds or manganites with
colossal magneto-resistance (CMR) has been generally considered to be an
inhomogeneous ground state. An alternative explanation of phase-coexistence as
the manifestation of a disorder-broadened first order magnetic phase transition
being interrupted ... | 1401.0891v2 |
2017-04-04 | Mechanics of disordered auxetic metamaterials | Auxetic materials are of great engineering interest not only because of their
fascinating negative Poisson's ratio, but also due to their increased toughness
and indentation resistance. These materials are typically synthesized polyester
foams with a very heterogeneous structure, but the role of disorder in auxetic
beh... | 1704.00943v3 |
2017-05-31 | Tuning of Magnetic and Electrical Properties in Complex oxide Thin Films Deposited By Pulsed Laser Deposition | Lanthanum manganite, LaMnO (LMO) is the parent compound for a class of hole
doped(e.g. La1-xCaxMnO3, La1-xSrxMnO3) and electron doped (e.g. . La1-xCexMnO3,
La1-xSnxMnO3) perovskite complex oxide materials. Strong correlation between
the spin,lattice, charge and orbital degrees of freedom is a hallmark of these
class of... | 1705.11003v1 |
2017-07-04 | Time-temperature superposition in grain and grain boundary response regime of A2HoRuO6 (A = Ba, Sr, Ca) double perovskite ceramics: A Conductivity Spectroscopic Analysis | The pursuit for an appropriate universal scaling factor to satisfy the
time-temperature superposition principle for grain and grain boundary responses
has been explored in the ac conductivity domain for polycrystalline double
perovskite oxides A2HoRuO6 (AHR; A = Ba, Sr, Ca). The samples show different
structural phases... | 1707.00881v1 |
2017-07-18 | Insulator to Metal Transition in WO$_3$ Induced by Electrolyte Gating | Tungsten oxide and its associated bronzes (compounds of tungsten oxide and an
alkali metal) are well known for their interesting optical and electrical
characteristics. We have modified the transport properties of thin WO$_3$ films
by electrolyte gating using both ionic liquids and polymer electrolytes. We are
able to ... | 1707.05748v1 |
2019-04-02 | Solid Propellants | Solid propellants are energetic materials used to launch and propel rockets
and missiles. Although their history dates to the use of black powder more than
two millennia ago, greater performance demands and the need for "insensitive
munitions" that are resistant to accidental ignition have driven much research
and deve... | 1904.01510v1 |
2019-04-08 | Superhydrophobic frictions | Contrasting with its sluggish behavior on standard solids, water is extremely
mobile on superhydrophobic materials, as shown for instance by the continuous
acceleration of drops on tilted water-repellent leaves. For much longer
substrates, however, drops reach a terminal velocity that results from a
balance between wei... | 1904.03913v1 |
2019-04-23 | Hydrated lithium intercalation into the Kitaev spin liquid candidate material $α-$RuCl$_3$ | We study on transport and magnetic properties of hydrated and
lithium-intercalated $\alpha$-RuCl$_3$, Li$_x$RuCl$_3 \cdot y$H$_2$O, for
investigating the effect on mobile-carrier doping into candidate materials for
a realization of a Kitaev model. From thermogravitometoric and one-dimensional
electron map analyses, we ... | 1904.10231v2 |
2019-12-03 | Large Resistance Change on Magnetic Tunnel Junction based Molecular Spintronics Devices | Molecular bridges covalently bonded to two ferromagnetic electrodes can
transform ferromagnetic materials and produce intriguing spin transport
characteristics. This paper discusses the impact of molecule induced strong
coupling on spin transport. To study the molecular coupling effect
organometallic molecular complex ... | 1912.01305v1 |
2021-01-04 | Unraveling the optical contrast in Sb2Te and AgInSbTe phase-change materials | Chalcogenide phase-change materials (PCMs) show a significant contrast in
optical reflectivity and electrical resistivity upon crystallization from the
amorphous phase and are leading candidates for non-volatile photonic and
electronic applications. In addition to the flagship Ge2Sb2Te5 phase-change
alloy, doped Sb2Te ... | 2101.00789v2 |
2011-04-05 | Viscoelastic Fracture of Biological Composites | Soft constituent materials endow biological composites, such as bone, dentin
and nacre, with viscoelastic properties that may play an important role in
their remarkable fracture resistance. In this paper we calculate the scaling
properties of the quasi-static energy release rate and the viscoelastic
contribution to the... | 1104.0814v1 |
2012-03-12 | Circuital model for the Maxwell Fish Eye perfect drain | Perfect drain for the Maxwell Fish Eye (MFE) is a non-magnetic dissipative
region placed in the focal point to absorb all the incident radiation without
reflection or scattering. The perfect drain was recently designed as a material
with complex electrical permittivity that depends on frequency. However, this
material ... | 1203.2424v1 |
2015-06-22 | Fracture Toughness of Silicate Glasses: Insights from Molecular Dynamics Simulations | Understanding, predicting and eventually improving the resistance to fracture
of silicate materials is of primary importance to design new glasses that would
be tougher, while retaining their transparency. However, the atomic mechanism
of the fracture in amorphous silicate materials is still a topic of debate. In
parti... | 1506.06441v1 |
2015-06-26 | Conduction through subsurface cracks in bulk topological insulators | Topological insulators (TIs) have the singular distinction of being
electronic insulators while harboring metallic, conductive surfaces. In
ordinary materials, defects such as cracks and deformations are barriers to
electrical conduction, intuitively making the material more electrically
resistive. Peculiarly, 3D TIs s... | 1506.08233v1 |
2018-12-14 | VI3 - a new layered ferromagnetic semiconductor | Two-dimensional (2D) materials are promising candidates for next-generation
electronic devices. In this regime, insulating 2D ferromagnets, which remain
rare, are of special importance due to their potential for enabling new device
architectures. Here we report the discovery of ferromagnetism in a layered van
der Waals... | 1812.05982v1 |
2019-01-06 | Low-Frequency Noise Spectroscopy of Charge-Density-Wave Phase Transitions in Vertical Quasi-2D Devices | We report results regarding the electron transport in vertical quasi-2D
layered 1T-TaS2 charge-density-wave devices. The low-frequency noise
spectroscopy was used as a tool to study changes in the cross-plane electrical
characteristics of the quasi-2D material below room temperature. The noise
spectral density revealed... | 1901.01475v1 |
2019-06-12 | Simulation and experimental studies of induction hardening behavior of a new medium-carbon, low-alloy wear resistance steel | Flux2D commercial software together with a Gleeble thermomechanical simulator
has been employed to numerically and physically simulate the material
properties profile of an induction hardened slurry transportation pipe made of
a recently developed 0.4 wt.% C, Nb-microalloyed steel. After calculating the
thermal history... | 1906.05007v1 |
2019-06-15 | Nonlinear planar Hall effect | An intriguing property of three-dimensional (3D) topological insulator (TI)
is the existence of surface states with spin-momentum locking, which offers a
new frontier of exploration in spintronics. Here, we report the observation of
a new type of Hall effect in a 3D TI Bi2Se3 film. The Hall resistance scales
linearly w... | 1906.06462v1 |
2019-06-15 | Effect of tungsten on vacancy behaviors in Ta-W alloys from first-principles | Alloying elements play an important role in the design of plasma facing
materials with good comprehensive properties. Based on first-principles
calculations, the stability of alloying element W and its interaction with
vacancy defects in Ta-W alloys are studied. The results show that W tends to
distribute dispersedly i... | 1906.06610v1 |
2019-06-24 | Electrical and magnetic properties of thin films of the spin-filter material CrVTiAl | The spin-filter material CrVTiAl is a promising candidate for producing
highly spin-polarized currents at room temperature in a nonmagnetic
architecture. Thin films of compensated-ferrimagnetic CrVTiAl have been grown
and their electrical and magnetic properties have been studied. The resistivity
shows two-channel semi... | 1906.10222v1 |
2019-11-25 | Fracturing of polycrystalline MoS$_2$ nanofilms | The possibility of tailoring the critical strain of 2D materials will be
crucial for the fabrication of flexible devices. In this paper, the fracture in
polycrystalline MoS2 films with two different grain orientations is studied at
the micro- and nanoscale using electron microscopy. The critical uniaxial
strain is dete... | 1911.10769v1 |
2019-11-27 | Large topological Hall effect in a geometrically frustrated kagome magnet Fe$_3$Sn$_2$ | We report on the observation of a large topological Hall effect (THE) over a
wide temperature region in a geometrically frustrated Fe3Sn2 magnet with a
kagome-bilayer structure. We found that the magnitude of the THE resistivity
increases with temperature and reaches -0.875 {\mu}{\Omega}.cm at 380 K.
Moreover, the crit... | 1911.12214v1 |
2020-01-21 | Huge linear magnetoresistance due to open orbits in $γ$-PtBi$_2$ | Some single-crystalline materials present an electrical resistivity which
decreases between room temperature and low temperatures at zero magnetic field
as in a good metal and switches to a nearly semiconductinglike behavior at low
temperatures with the application of a magnetic field. Often, this is
accompanied by a h... | 2001.07674v2 |
2020-01-22 | Chemical segregation in Ge2Sb2Te5 thin films during in-situ heating | Germanium antimony telluride has been the most used and studied phase-change
material for electronic memory due to its suitable crystallization temperature,
amorphous to crystalline resistance contrast, and stability of the amorphous
phase. In this work, the segregation of Ge in a Ge2Sb2Te5 film of 30 nm
thickness duri... | 2001.08100v1 |
2020-05-10 | Determination of the magnetocaloric effect from thermophysical parameters and their relationships near magnetic phase transition in doped manganites | We present the results of a comparative analysis of the magnetocaloric effect
(MCE) in Pr0.7Sr0.2Ca0.1MnO3, through direct and indirect measurements, using
experimentally measured magnetization, specific heat, magnetostriction,
resistivity, thermal diffusivity and thermal conductivity parameters. We have
demonstrated t... | 2005.04569v1 |
2020-07-05 | Deep Learning based Dimple Segmentation for Quantitative Fractography | In this work, we try to address the challenging problem of dimple detection
and segmentation in Titanium alloys using machine learning methods, especially
neural networks. The images i.e. fractographs are obtained using a Scanning
Election Microscope (SEM). To determine the cause of fracture in metals we
address the pr... | 2007.02267v3 |
2020-07-10 | Canted Spin Texture and Quantum Spin Hall Effect in WTe2 | We report an unconventional quantum spin Hall phase in the monolayer
T$_\text{d}$-WTe$_2$, which exhibits hitherto unknown features in other
topological materials. The low-symmetry of the structure induces a canted spin
texture in the $yz$ plane, which dictates the spin polarization of
topologically protected boundary ... | 2007.05626v1 |
2020-07-14 | Tuning Conductivity and Spin Dynamics in Few-Layer Graphene via In Situ Potassium Exposure | Chemical modification, such as intercalation or doping of novel materials is
of great importance for exploratory material science and applications in
various fields of physics and chemistry. In the present work, we report the
systematic intercalation of chemically exfoliated few-layer graphene with
potassium while moni... | 2007.07057v1 |
2020-07-31 | Quantum breakdown of superconductivity in low-dimensional materials | In order to understand the emergence of superconductivity it is useful to
study and identify the various pathways leading to the destruction of
superconductivity. One way is to use the increase in Coulomb-repulsion due to
the increase in disorder, which overpowers the attractive interaction
responsible for Cooper-pair ... | 2007.15870v1 |
2020-08-06 | Creep in reactive colloidal gels: a nanomechanical study of cement hydrates | From soft polymeric gels to hardened cement paste, amorphous solids under
constant load exhibit a pronounced time-dependent deformation called creep. The
microscopic mechanism of such a phenomenon is poorly understood in amorphous
materials and constitutes an even greater challenge in densely packed and
chemically reac... | 2008.02617v3 |
2020-12-04 | Epitaxial stabilization of SrCu$_3$O$_4$ with infinite Cu$_{3/2}$O$_2$ layers | We report the epitaxial thin film synthesis of SrCu$_3$O$_4$ with infinitely
stacked Cu$_3$O$_4$ layers composed of edge-sharing CuO$_4$ square-planes,
using molecular beam epitaxy. Experimental and theoretical characterizations
showed that this material is a metastable phase that can exist by applying
tensile biaxial ... | 2012.02433v1 |
2021-03-02 | Bioinspired approaches to toughen calcium phosphate-based ceramics for bone repair | To respond to the increasing need for bone repair strategies, various types
of biomaterials have been developed. Among those, calcium phosphate ceramics
(CPCs) are promising since they possess a chemical composition similar to that
of bones. To be suitable for implants, CPCs need to fulfill a number of
biological and m... | 2103.01443v1 |
2021-04-14 | Combining AFM imaging and elementally resolved spectro-electrochemistry for understanding stability and quality of passive films formed on Alloy 600 | Understanding elemental corrosion currents and visualizing corroding
topographies provide a detailed insight into corrosion mechanisms at the
nano-scale. Here, we develop a strategy to understand the elemental
composition, corrosion resistivity and local stability of passive materials.
Specifically, we utilize a pulse ... | 2104.07100v1 |
2021-06-11 | Measurement of onset of structural relaxation in melt-quenched phase change materials | Chalcogenide phase change materials enable non-volatile, low-latency
storage-class memory. They are also being explored for new forms of computing
such as neuromorphic and in-memory computing. A key challenge, however, is the
temporal drift in the electrical resistance of the amorphous states that encode
data. Drift, c... | 2106.06270v1 |
2021-08-08 | Strong-coupling superconductivity of SrIr2 and SrRh2: Phonon engineering of metallic Ir and Rh | Experimental and theoretical studies on superconductivity in SrIr$_2$ and
SrRh$_2$ Laves phases are presented. The measured resistivity, heat capacity,
and magnetic susceptibility confirm the superconductivity of these compounds
with $T_c$ = 6.07 K and 5.41 K, respectively. Electronic structure calculations
show that t... | 2108.03692v1 |
2021-08-06 | Manipulating thermal fields with inhomogeneous heat spreaders | We design a class of spatially inhomogeneous heat spreaders in the context of
steady-state thermal conduction leading to spatially uniform thermal fields
across a large convective surface. Each spreader has a funnel-shaped design,
either in the form of a trapezoidal prism or truncated cone, and is forced by a
thermal s... | 2108.04881v2 |
2021-08-20 | Peak in the superconducting transition temperature of the nonmagnetic topological line-nodal material CaSb$_2$ under pressure | Investigating the pressure dependence of the superconducting (SC) transition
temperature $T_{\rm c}$ is crucial for understanding the SC mechanism. Herein,
we report on the pressure dependence of $T_{\rm c}$ in the nonmagnetic
topological line-nodal material CaSb$_2$, based on measurements of electric
resistance and al... | 2108.08992v1 |
2021-09-09 | Bias factor of dislocation loops in quasicrystalline materials | Vacancy swelling of quasicrystals under irradiation is considered. In
quasicrystals, the evolution of dislocations is accompanied by the formation of
phasons which are localized topological defects of the vacancy and interstitial
types. At moderate temperatures the diffusivity of phasons is low which leads
to the forma... | 2109.04136v2 |
2021-09-20 | Coexistence of superconductivity and weak anti-localization at KTaO3 (111) interfaces | The intersection of two-dimensional superconductivity and topologically
nontrivial states hosts a wide range of quantum phenomena, including Majorana
fermions. Coexistence of topologically nontrivial states and superconductivity
in a single material, however, remains elusive. Here, we report on the
observation of two-d... | 2109.09786v1 |
2021-09-23 | Plastic deformation of the CaMg$_{2}$ C14-Laves phase from 50-250$^\circ$C | Intermetallic phases can significantly improve the creep resistance of
magnesium alloys, extending their use to higher temperatures. However, little
is known about the deformation behaviour of these phases at application
temperatures, which are commonly below their macroscopic
brittle-to-ductile-transition temperature.... | 2109.11367v1 |
2021-11-08 | Microstructure and the Boson-peak in thermally-treated In_{x}O films | We report on the correlation between the boson-peak and structural changes
associated with thermally-treating amorphous indium-oxide films. In this
process, the resistance of a given sample may decrease by a considerable margin
while its amorphous structure is preserved. In the present study, we focus on
the changes th... | 2111.04277v1 |
2021-11-11 | NbReSi: A Noncentrosymetric Superconductor with Large Upper Critical Field | We report the discovery of superconductivity in noncentrosymmetric NbReSi,
which crystallizes in a hexagonal ZrNiAl-type crystal structure with space
group $P\bar{6}2m$ (No.~189). Bulk superconductivity, with $T_c$ = 6.5 K was
characterized via electrical-resistivity, magnetization, and heat-capacity
measurements. The ... | 2111.06010v1 |
2021-11-14 | Superconductivity in noncentrosymmetric NbReSi investigated by muon spin rotation and relaxation | Noncentrosymmetric materials are promising paradigm to explore unconventional
superconductivity. In particular, several Re containing noncentrosymmetric
materials have attracted considerable attention due to a superconducting state
with a broken time reversal symmetry. A comprehensive study on the
superconducting groun... | 2111.07247v1 |
2021-12-26 | Tuning Ferroelectrics to Antiferroelectrics in Multiferroic LaxSr1-xFe12O19 Ceramics | The combination of antiferroelectricity (AFE) and ferromagnetism (FM) in one
structure would allow the development of new type of multiferroic candidates,
which be applicable not only in magnetoelectric memories but also in novel
energy storage devices. Here we propose a novel type of multiferroic candidate
LaxSr1-xFe1... | 2112.13307v1 |
2022-01-03 | Aerogel from sustainably grown bacterial cellulose pellicle as thermally insulative film for building envelope | Improving building energy performance requires the development of new highly
insulative materials. An affordable retrofitting solution comprising a thin
film could improve the resistance to heat flow in both residential and
commercial buildings and reduce overall energy consumption. Here we propose
cellulose aerogel fi... | 2201.00449v1 |
2022-03-13 | Electronic and topological properties of the van der Waals layered superconductor PtTe | We report the crystal growth and structural and electronic properties of
superconducting, van der Waals layered PtTe. Easily cleavable crystals with a
plate-like morphology consistent with the layered structure were grown from a
platinum rich flux. A consistent determination of $T_c = 0.57$ K is made from
the onset of ... | 2203.06655v1 |
2022-04-28 | Vacancy formation energies and migration barriers in multi-principal element alloys | Multi-principal element alloys (MPEAs) continue to garner interest as
structural and plasma-facing materials due to their structure stability and
increased resistance to radiation damage. Despite sensitivity of mechanical
behavior to irradiation and point-defect formation, there has been scant
attention on understandin... | 2204.13616v1 |
2022-08-01 | Boundary scattering in micro-size crystal of topological Kondo insulator SmB$_6$ | We have studied the effects of phonon-boundary scattering on the thermal
transport in topological Kondo insulator, SmB$_6$. The studies have been
performed by using the $3\omega$ method in the temperature range 300K - 3K. We
show that the observed thermal conductivity of micro-size SmB$_6$ is of the
order of magnitude ... | 2208.01145v1 |
2022-08-09 | Pressure-Independent Through-Plane Electrical Conductivity Measurements of Highly Filled Conductive Polymer Composites | Highly filled conductive polymer composites (CPCs) are widely used in
applications such as bipolar plate materials for polymer electrolyte membrane
fuel cells and redox flow batteries, electromagnetic interference shielding and
sensors due to their useful electrical properties. A common method for
determining through-p... | 2208.04643v1 |
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