publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
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2015-08-28 | Does a dissolution-precipitation mechanism explain concrete creep in moist environments? | Long-term creep (i.e., deformation under sustained load) is a significant
material response that needs to be accounted for in concrete structural design.
However, the nature and origin of creep remains poorly understood, and
controversial. Here, we propose that concrete creep at RH (relative humidity) >
50%, but fixed ... | 1508.07082v1 |
2015-09-11 | High thermoelectric performance and low thermal conductivity of densified LaOBiSSe | In this study, we examined the thermoelectric properties of the layered
bismuth-chalcogenide-based (BiCh2-based) compound LaOBiSSe, which is expected
to be a new candidate material for thermoelectric applications. Densified
samples were obtained with a hot-press method. The results of the X-ray
diffraction measurements... | 1509.03387v1 |
2016-04-22 | Thermoelectric Properties of Antiperovskite Calcium Oxides Ca3PbO and Ca3SnO | We report the thermoelectric properties of polycrystalline samples of
Ca3Pb1-xBixO (x = 0, 0.1, 0.2) and Ca3SnO, both crystallizing in a cubic
antiperovskite-type structure. The Ca3SnO sample shows metallic resistivity and
its thermoelectric power approaches 100 uV K-1 at room temperature, resulting
in the thermoelectr... | 1604.06541v2 |
2016-04-26 | A Sinusoidally-Architected Helicoidal Biocomposite | A fibrous herringbone-modified helicoidal architecture is identified within
the exocuticle of an impact-resistant crustacean appendage. This previously
unreported composite microstructure, which features highly textured apatite
mineral templated by an alpha-chitin matrix, provides enhanced stress
redistribution and ene... | 1604.07798v2 |
2016-05-04 | Atomically Thin Boron Nitride: Unique Properties and Applications | Atomically thin boron nitride (BN) is an important two-dimensional (2D)
nanomaterial, with many properties distinct from graphene. In this feature
article, these unique properties and associated applications often not possible
from graphene are outlined. The article starts with characterization and
identification of at... | 1605.01136v1 |
2016-05-06 | Superconducting gap structure of FeSe | The microscopic mechanism governing the zero-resistance flow of current in
some iron-based, high-temperature superconducting materials is not well
understood up to now. A central issue concerning the investigation of these
materials is their superconducting gap symmetry and structure. Here we present
a combined study o... | 1605.01908v2 |
2016-05-24 | Pressure-Induced Confined Metal from the Mott Insulator Sr3Ir2O7 | The spin-orbit Mott insulator Sr3Ir2O7 provides a fascinating playground to
explore insulator-metal transition driven by intertwined charge, spin, and
lattice degrees of freedom. Here, we report high pressure electric resistance
and resonant inelastic x ray scattering measurements on single crystal Sr3Ir2O7
up to 63 65... | 1605.07582v1 |
2016-11-08 | Valley Hall Effect and Nonlocal Transport in Strained Graphene | Graphene subject to high levels of shear strain leads to strong
pseudo-magnetic fields resulting in the emergence of Landau levels. Here we
show that, with modest levels of strain, graphene can also sustain a classical
valley hall effect (VHE) that can be detected in nonlocal transport
measurements. We provide a theory... | 1611.02382v2 |
2016-11-11 | Microfluidization of graphite and formulation of graphene-based conductive inks | We report the exfoliation of graphite in aqueous solutions under high shear
rate [$\sim10^8s^{-1}$] turbulent flow conditions, with a 100\% exfoliation
yield. The material is stabilized without centrifugation at concentrations up
to 100 g/L using carboxymethylcellulose sodium salt to formulate conductive
printable inks... | 1611.04467v1 |
2016-12-26 | Observation of quantum oscillations in FIB fabricated nanowires of topological insulator (Bi2Se3) | Since last few years, research based on topological insulators (TI) is in
great interests due to intrinsic exotic fundamental properties and future
potential applications such as quantum computers or spintronics. The
fabrication of TI nanodevices and study on their transport properties mostly
focused on high quality cr... | 1612.08353v1 |
2017-09-26 | SnAs-based layered superconductor NaSn2As2 | Superconductivity with exotic properties has often been discovered in
materials with a layered (two-dimensional) crystal structure. The low
dimensionality affects the electronic structure of materials, which could
realize a high transition temperature (Tc) and/or unconventional pairing
mechanisms. Here, we report the s... | 1709.08899v2 |
2017-11-10 | Giant anisotropic magnetoresistance and planar Hall effect in the Dirac semimetal Cd3As2 | Anisotropic magnetoresistance is the change tendency of resistance of a
material on the mutual orientation of the electric current and the external
magnetic field. Here, we report experimental observations in the Dirac
semimetal Cd3As2 of giant anisotropic magnetoresistance and its transverse
version, called the planar... | 1711.03671v2 |
2017-11-15 | Revisiting the electron-doped SmFeAsO: enhanced superconductivity up to 58.6 K by Th and F codoping | In the iron-based high-Tc bulk superconductors, Tc above 50K was only
observed in the electron-doped 1111-type compounds. Here we revisit the
electron-doped SmFeAsO polycrystals to make a further investigation for the
highest T-c in these materials. To introduce more electron carriers and less
crystal lattice distortio... | 1711.05440v1 |
2018-01-19 | Observation of Meissner effect in potassium-doped \emph{p}-quinquephenyl} | The chain-like organic compounds with conjugated structure have the potential
to become high temperature superconductors. We examine this idea by choosing
p-quinquephenyl with five phenyl rings connected in para position. The dc
magnetic susceptibility measurements provide solid evidence for the presence of
Meissner ef... | 1801.06324v2 |
2018-01-19 | Pressure-induced superconductivity in palladium sulfide | An extended study on PdS is carried out with the measurements of the
resistivity, Hall coefficient, Raman scattering, and X-ray diffraction at high
pressures up to 42.3 GPa. With increasing pressure, superconductivity is
observed accompanying with a structural phase transition at around 19.5 GPa.
The coexistence of sem... | 1801.06330v1 |
2018-02-07 | Structure, magnetic and transport properties of epitaxial thin films of equiatomic CoFeMnGe quaternary Heusler alloy | Future spintronics requires the realization of thin film of half-metallic
ferromagnets having high Curie temperature and 100\% spin polarization at the
Fermi level for potential spintronics applications. In this paper, we report
the epitaxial thin films growth of half-metallic CoFeMnGe Heusler alloy on MgO
(001) substr... | 1802.02413v1 |
2018-03-12 | Sub 20 meV Schottky barriers in metal/MoTe2 junctions | The newly emerging class of atomically-thin materials has shown a high
potential for the realisation of novel electronic and optoelectronic
components. Amongst this family, semiconducting transition metal
dichalcogenides (TMDCs) are of particular interest. While their band gaps are
compatible with those of conventional... | 1803.04164v1 |
2018-04-09 | Dislocation-induced thermal transport anisotropy in single-crystal group-III nitride films | Dislocations, one-dimensional lattice imperfections, are common to
technologically important materials such as III-V semiconductors, and adversely
affect heat dissipation in e.g., nitride-based high-power electronic devices.
For decades, conventional models based on nonlinear elasticity theory have
predicted this therm... | 1804.02825v1 |
2018-05-01 | Strongly correlated proton-doped perovskite nickelate memory devices | We demonstrate memory devices based on proton doping and re-distribution in
perovskite nickelates (RNiO3, {R=Sm,Nd}) that undergo filling-controlled Mott
transition. Switching speeds as high as 30 ns in two-terminal devices patterned
by electron-beam lithography is observed. The state switching speed reported
here are ... | 1805.00527v1 |
2018-06-21 | Strange metallicity in the doped Hubbard model | Strange or bad metallic transport, defined by its incompatibility with
conventional quasiparticle pictures, is a theme common to strongly correlated
materials and ubiquitous in many high temperature superconductors. The Hubbard
model represents a minimal starting point for modeling strongly correlated
systems. Here we ... | 1806.08346v2 |
2018-09-13 | Superconductivity in LaPd2Bi2 with CaBe2Ge2-type structure | Here we report the synthesis and superconductivity of a novel ternary
compound LaPd2Bi2. Shiny plate-like single crystals of LaPd2Bi2 were first
synthesized by high-temperature solution method with PdBi flux. X-ray
diffraction analysis indicates that LaPd2Bi2 belongs to the primitive
tetragonal CaBe2Ge2-type structure ... | 1809.04811v1 |
2019-05-08 | Miniature Multi-Level Optical Memristive Switch Using Phase Change Material | The optical memristive switches are electrically activated optical switches
that can memorize the current state. They can be used as optical latching
switches in which the switching state is changed only by applying an electrical
Write/Erase pulse and maintained without external power supply. We demonstrate
an optical ... | 1905.03163v1 |
2020-03-02 | Structural and Magnetic Properties of Molecular Beam Epitaxy Grown Chromium Selenide Thin Films | Chromium selenide thin films were grown epitaxially on Al${_2}$O${_3}$(0001)
and Si(111)-(7${\times}$7) substrates using molecular beam epitaxy (MBE). Sharp
streaks in reflection high-energy electron diffraction and triangular
structures in scanning tunneling microscopy indicate a flat smooth film growth
along the c-ax... | 2003.01199v1 |
2017-03-01 | Chemical and Lattice Stability of the Tin Sulfides | The tin sulfides represent a materials platform for earth-abundant
semiconductor technologies. We present a first-principles study of the five
known and proposed phases of SnS together with SnS2 and Sn2S3. Lattice-dynamics
techniques are used to evaluate the dynamical stability and
temperature-dependent thermodynamic f... | 1703.00361v2 |
2017-03-11 | Sign reversal of magnetoresistance and p to n transition in Ni doped ZnO thin film | We report the magnetoresistance and nonlinear Hall effect studies over a wide
temperature range in pulsed laser deposited Ni0.07Zn0.93O thin film. Negative
and positive contributions to magnetoresistance at high and low temperatures
have been successfully modeled by the localized magnetic moment and two band
conduction... | 1703.03942v1 |
2018-10-01 | Quantum transport in a compensated semimetal W2As3 with nontrivial Z2 indices | We report a topological semimetal W2As3 with a space group C2/m. Based on the
first-principles calculations, band crossings are partially gapped when
spin-orbit coupling is included. The Z2 indices at the electron filling are
[1;111], characterizing a strong topological insulator and topological surface
states. From th... | 1810.00665v1 |
2019-07-05 | Giant enhancement of Piezo-resistance in ballistic graphene due to transverse electric fields | We investigate the longitudinal and transverse piezoresistance effect in
suspended graphene in the ballistic regime. Utilizing parametrized tight
binding Hamiltonian from ab initio calculations along with Landauer quantum
transport formalism, we devise a methodology to evaluate the piezoresistance
effect in 2D material... | 1907.02896v1 |
2020-04-23 | Experimental evidence of monolayer AlB$_2$ with symmetry-protected Dirac cones | Monolayer AlB$_2$ is composed of two atomic layers: honeycomb borophene and
triangular aluminum. In contrast with the bulk phase, monolayer AlB$_2$ is
predicted to be a superconductor with a high critical temperature. Here, we
demonstrate that monolayer AlB$_2$ can be synthesized on Al(111) via molecular
beam epitaxy. ... | 2004.10916v1 |
2020-09-13 | Extreme softness of brain matter in simple shear | We show that porcine brain matter can be modelled accurately as a very soft
rubber-like material using the Mooney-Rivlin strain energy function, up to
strains as high as 60\%. This result followed from simple shear experiments
performed on small rectangular fresh samples ($2.5$ cm$^3$ and $1.1$ cm$^3$) at
quasi-static ... | 2009.06102v1 |
2020-09-29 | Dimensional Crossover Tuned by Pressure in Layered Magnetic NiPS3 | Layered magnetic transition-metal thiophosphate NiPS3 has unique
two-dimensional (2D) magnetic properties and electronic behavior. The
electronic band structure and corresponding magnetic state are expected to
sensitive to the interlayer interaction, which can be tuned by external
pressure. Here, we report an insulator... | 2009.14051v1 |
2022-02-23 | The honeycomb and hyperhoneycomb polymorphs of IrI$_3$ | The synthesis of IrI$_3$ at high pressure in its layered honeycomb polymorph
is reported. Its crystal structure is refined by single crystal X-ray
diffraction. Faults in the honeycomb layer stacking are observed by single
crystal diffraction, synchrotron powder diffraction, and transmission electron
microscopy. A previ... | 2202.11658v1 |
2014-01-10 | Ferroelectric-like SrTiO3 surface dipoles probed by graphene | The electrical transport properties of graphene are greatly influenced by its
environment. Owing to its high dielectric constant, strontium titanate (STO) is
expected to suppress the long-range charged impurity scattering and
consequently to enhance the mobility. However, the absence of such enhancement
has caused some... | 1401.2222v1 |
2017-05-01 | Large Thermoelectric Power Factor at Low Temperatures in One-Dimensional Telluride Ta4SiTe4 | We report the discovery of a very large thermoelectric power over -400 microV
K-1 in the whisker crystals of a one-dimensional telluride Ta4SiTe4, while
maintaining a low electrical resistivity of rho = 2 mohm cm, yielding a very
large power factor of P = 80 microW cm-1 K-2 at an optimum temperature of 130
K. This temp... | 1705.00404v1 |
2017-08-25 | Spin torque control of antiferromagnetic moments in NiO | For a long time, there have been no efficient ways of controlling
antiferromagnets. Quite a strong magnetic field was required to manipulate the
magnetic moments because of a high molecular field and a small magnetic
susceptibility. It was also difficult to detect the orientation of the magnetic
moments since the net m... | 1708.07682v1 |
2019-03-13 | Hydrodynamic Phonon Transport: Past, Present, and Prospect | The hydrodynamic phonon transport was studied several decades ago for
verifying the quantum theory of lattice thermal transport. Recent prediction of
significant hydrodynamic phonon transport in graphitic materials shows its
practical importance for high thermal conductivity materials and brought a
renewed attention. A... | 1903.05731v1 |
2019-04-12 | Synthesis of anti-perovskite-type carbides and nitrides from metal oxides and melamine | Four anti-perovskite-type compounds, ZnNNi3, ZnCNi3, SnNCo3, and SnCCo3, are
synthesised through reactions between ingredient metal oxides and organic
compound melamine (C3H6N6). ZnNNi3 and ZnCNi3 are selectively synthesised by
choosing different reaction temperatures and nominal oxide-to-melamine ratios.
SnNCo3 is syn... | 1904.06103v1 |
2019-12-23 | Hydride Vapor-Phase Epitaxy Reactor for Bulk GaN Growth | An HVPE reactor for the growth of bulk GaN crystals with a diameter of 50 mm
was developed. Growth rate non-uniformity of 1% was achieved using an
axisymmetric vertical gas injector with stagnation point flow.
Chemically-resistant refractory materials were used instead of quartz in the
reactor hot zone. High-capacity e... | 1912.11010v1 |
2012-03-27 | Shadow evaporation of epitaxial Al/Al2O3/Al tunnel junctions on sapphire utilizing an inorganic bilayer mask | This letter describes a new inorganic shadow mask that has been employed for
the evaporation of all-epitaxial Al/Al2O3/Al superconducting tunnel junctions.
Organic resists that are commonly used for shadow masks and other lift-off
processes are not compatible with ultra-high vacuum deposition systems, and
they can brea... | 1203.6007v1 |
2012-06-14 | Conduction in jammed systems of tetrahedra | Control of transport processes in composite microstructures is critical to
the development of high performance functional materials for a variety of
energy storage applications. The fundamental process of conduction and its
control through the manipulation of granular composite attributes (e.g., grain
shape) are the su... | 1206.2990v1 |
2016-09-06 | Effect of morphology and defectiveness of graphene-related materials on the electrical and thermal conductivity of their polymer nanocomposites | In this work, electrically and thermally conductive poly (butylene
terephthalate) nanocomposites were prepared by in-situ ring-opening
polymerization of cyclic butylene terephthalate (CBT) in presence of a
tin-based catalyst. One type of graphite nanoplatelets (GNP) and two different
grades of reduced graphene oxide (r... | 1609.01581v2 |
2016-09-22 | Crystal structure and low-energy Einstein mode in ErV$_2$Al$_{20}$ intermetallic cage compound | Single crystals of a new ternary aluminide ErV$_2$Al$_{20}$ were grown using
a self-flux method. The crystal structure was determined by powder X-ray
diffraction measurements and Rietveld refinement, and physical properties were
studied by means of electrical resistivity, magnetic susceptibility and
specific heat measu... | 1609.07161v1 |
2020-05-11 | Crystal Structure and Thermoelectric Transport Properties of As-Doped Layered Pnictogen Oxyselenides NdO0.8F0.2Sb1-xAsxSe2 | We report the synthesis and thermoelectric transport properties of As-doped
layered pnictogen oxyselenides NdO0.8F0.2Sb1-xAsxSe2 (x < 0.7), which are
predicted to show high-performance thermoelectric properties based on
first-principles calculation. The crystal structure of these compounds belongs
to the tetragonal P4/... | 2005.04836v1 |
2020-05-17 | Paramagnetic resonance in La2NiMnO6 probed by impedance and lock-in detection techniques | We report the detection of paramagnetic resonance in the double perovskite
La2NiMnO6 at room temperature for microwave magnetic fields with frequencies, f
= 1 GHz to 5 GHz, using two cavity-less methods. We use an indirect impedance
method which makes use of a radio frequency impedance analyzer and a folded
copper stri... | 2005.08142v1 |
2020-05-19 | Molecular beam epitaxy growth of nonmagnetic Weyl semimetal LaAlGe thin film | Here, we report a detailed method of growing LaAlGe, a non-magnetic Weyl
semimetal, thin film on silicon(100) substrates by molecular beam epitaxy and
their structural and electrical characterizations. 50 nm thick LaAlGe films
were deposited and annealed for 16 hours in situ at a temperature 793 K.
As-grown high-qualit... | 2005.09695v1 |
2020-07-13 | One nanometer HfO$_2$-based ferroelectric tunnel junctions on silicon | In ferroelectric materials, spontaneous symmetry breaking leads to a
switchable electric polarization, which offers significant promise for
nonvolatile memories. In particular, ferroelectric tunnel junctions (FTJs) have
emerged as a new resistive switching memory which exploit
polarization-dependent tunnel current acro... | 2007.06182v1 |
2020-08-03 | Energy gap tuning and gate-controlled topological phase transition in InAs/In$_{x}$Ga$_{1-x}$Sb composite quantum wells | We report transport measurements of strained InAs/In$_{x}$Ga$_{1-x}$Sb
composite quantum wells (CQWs) in the quantum spin Hall phase, focusing on the
control of the energy gap through structural parameters and an external
electric field. For highly strained CQWs with $x = 0.4$, we obtain a gap of 35
meV, an order of ma... | 2008.00664v1 |
2020-08-15 | Microwave AC voltage induced phase change in Sb$_2$Te$_3$ nanowires | Scaling information bits to ever smaller dimensions is a dominant drive for
information technology (IT). Nanostructured phase change material emerges as a
key player in the current green-IT endeavor with low power consumption,
functional modularity and promising scalability. In this work, we present the
demonstration o... | 2008.06666v1 |
2020-10-23 | Observation of photoelectric nonvolatile memory and oscillations in VO2 at room temperature | Vanadium dioxide (VO2) is a phase change material that can reversibly change
between high and low resistivity states through electronic and structural phase
transitions. Thus far, VO2 memory devices have essentially been volatile at
room temperature, and nonvolatile memory has required non-ambient surroundings
(e.g., e... | 2010.12531v1 |
2020-11-17 | Effect of Surface Treatment on High-Temperature Oxidation Behavior of IN 713C | The effects of surface preparations on oxidation kinetics and oxide scale
morphology for the commercially available Ni-based superalloy IN 713C have been
investigated. The ground and polished samples were exposed in air at 800-1100C.
The ground specimens were found to demonstrate lower oxidation kinetics
compared to th... | 2011.08910v1 |
2021-02-01 | Resistive transition of hydrogen-rich superconductors | Critical temperature, $T_c$, and the transition width, $\Delta$$T_c$, are two
primary parameters of the superconducting transition. The latter parameter
reflects the superconducting state disturbance originating from the
thermodynamic fluctuations, atomic disorder, applied magnetic field, the
presence of secondary crys... | 2102.00946v3 |
2021-02-10 | Evidence of damage in carbon fibre composite tiles joined to a metallic heat sink under high heat flux fatigue | The two years experience with Active Metal Casting flat bonds shows that this
technology is suitable for the heat fluxes expected in Tore Supra (10
MW/m${}^2$). Tests were pursued up to 3330 cycles, with elements still
functional. At higher heat fluxes, fatigue damage is observed, but the bond
resists remarkably well w... | 2102.05316v1 |
2021-03-14 | Electron-beam Floating-zone Refined UCoGe | The interplay between unconventional superconductivity and quantum critical
ferromagnetism in the U-Ge compounds represents an open problem in strongly
correlated electron systems. Sample quality can have a strong influence on both
of these ordered states in the compound UCoGe, as is true for most
unconventional superc... | 2103.08000v1 |
2021-03-24 | Large Nernst effect and field enhanced transversal ZT in ZrTe5 | Thermoelectric materials can recover electrical energy from waste heat and
vice versa, which are of great significance in green energy harvesting and
solid state refrigerator. The thermoelectric figure of merit (zT) quantifies
the energy conversion efficiency, and a large Seebeck or Nernst effect is
crucial for the dev... | 2103.13069v1 |
2021-03-26 | Large Microwave Inductance of Granular Boron-Doped Diamond Superconducting Films | Boron-doped diamond granular thin films are known to exhibit
superconductivity with an optimal critical temperature of Tc = 7.2K. Here we
report the measured complex surface impedance of Boron-doped diamond films in
the microwave frequency range using a resonant technique. Experimentally
measured inductance values are ... | 2103.14738v3 |
2021-06-25 | An estimate for thermal diffusivity in highly irradiated tungsten using Molecular Dynamics simulation | The changing thermal conductivity of an irradiated material is among the
principal design considerations for any nuclear reactor, but at present few
models are capable of predicting these changes starting from an arbitrary
atomistic model. Here we present a simple model for computing the thermal
diffusivity of tungsten... | 2106.13666v2 |
2021-07-15 | Microstructure manipulation by laser-surface remelting of a full-Heusler compound to enhance thermoelectric properties | There is an increasing reckoning that the thermoelectric performance of a
material is dependent on its microstructure. However, the
microstructure-properties relationship often remains elusive, in part due to
the complexity of the hierarchy and scales of features that influence transport
properties. Here, we focus on t... | 2107.07327v1 |
2021-07-29 | Breakdown of the topological protection by cavity vacuum fields in the integer quantum Hall effect | The control of the electronic properties of materials via the vacuum fields
of cavity electromagnetic resonators is one of the emerging frontiers of
condensed matter physics. We show here that the enhancement of vacuum field
fluctuations in subwavelength split-ring resonators dramatically affects
arguably one of the mo... | 2107.14145v1 |
2021-09-03 | Quantum anomalous Hall edge channels survive up to the Curie temperature | Achieving metrological precision of quantum anomalous Hall resistance
quantization at zero magnetic field so far remains limited to temperatures of
the order of 20 mK, while the Curie temperature in the involved material is as
high as 20 K. The reason for this discrepancy remains one of the biggest open
questions surro... | 2109.01463v1 |
2021-11-03 | Insulator-to-superconductor transition in quasi-one-dimensional HfS3 under pressure | Various transition metal trichalcogenides (TMTC) show the charge-density-wave
and superconductivity, which provide an ideal platform to study the correlation
between these two orderings and the mechanism of superconductivity. Currently,
almost all metallic TMTC compounds can show superconductivity either at ambient
pre... | 2111.02060v1 |
2021-11-16 | Ultrathin ferrimagnetic GdFeCo films with very low damping | Ferromagnetic materials dominate as the magnetically active element in
spintronic devices, but come with drawbacks such as large stray fields, and low
operational frequencies. Compensated ferrimagnets provide an alternative as
they combine the ultrafast magnetization dynamics of antiferromagnets with a
ferromagnet-like... | 2111.08768v1 |
2021-12-06 | Sliding Ferroelectric Tunnel Junctions | Very recently, ferroelectric polarization in staggered bilayer hexagonal
boron nitride (BBN) and its novel sliding inversion mechanism was reported
experimentally (Science 2021, 372, 1458; 2021, 372, 1462), which paves a new
way to realize van der Waals (vdW) ferroelectric devices with new
functionalities. Here, we dev... | 2112.02886v1 |
2022-06-06 | Enhancement of superconductivity on the verge of a structural instability in isovalently doped $β$-ThRh$_{1-x}$Ir$_{x}$Ge | $\beta$-ThRhGe, the high-temperature polymorph of ThRhGe, is isostructural to
the well-known ferromagnetic superconductor URhGe. However, contrary to URhGe,
$\beta$-ThRhGe is nonmagnetic and undergoes an incomplete structural phase
transition at 244 K, followed by a superconducting transition below 3.36 K.
Here we show... | 2206.02364v1 |
2022-06-21 | HR-EBSD analysis of in situ stable crack growth at the micron scale | Understanding the local fracture resistance of microstructural features. such
as brittle inclusions, coatings, and interfaces at the microscale under complex
loading conditions is critical for microstructure-informed design of materials.
In this study, a novel approach has been formulated to decompose the J-integral
ev... | 2206.10243v2 |
2022-10-01 | Surface modulation of metal-organic frameworks for on-demand photochromism in the solid state | Organic photoswitchable molecules have struggled in solid state form to
fulfill their remarkable potential, in terms of photoswitching performance and
long-term stability when compared to their inorganic counterparts. We report
the concept of non-electron deficient host's surface with optimal porosity and
hydrophobicit... | 2210.00241v1 |
2022-10-06 | Fracture behavior of MOF monoliths revealed by nanoindentation and nanoscratch | Monolithic metal-organic frameworks (MOFs) represent a promising solution for
the industrial implementation of this emerging class of multifunctional
materials, due to their structural stability. When compared to MOF powders,
monoliths exhibit other intriguing properties like hierarchical porosity, that
significantly i... | 2210.03219v1 |
2022-10-26 | Thermoelectric properties in semimetals with inelastic electron-hole scattering | We present systematic theoretical results on thermoelectric effects in
semimetals based on the variational method of the linearized Boltzmann
equation. Inelastic electron-hole scattering is known to play an important role
in the unusual transport of semimetals, including the broad $T^2$ temperature
dependence of the el... | 2210.14825v2 |
2023-01-10 | Depolarization Induced III-V Triatomic Layers with Tristable Polarization States | The integration of ferroelectrics that exhibit high dielectric,
piezoelectric, and thermal susceptibilities with the mainstream semiconductor
industry will enable novel device types for widespread applications, and yet
there are few silicon-compatible ferroelectrics suitable for device
downscaling. We demonstrate with ... | 2301.03876v1 |
2023-01-11 | Direct imaging of local atomic structures in zeolite using novel low-dose scanning transmission electron microscopy | Zeolites have been used in industrial applications such as catalysts, ion
exchangers, and molecular sieves because of their unique porous atomic
structures. However, the direct observation of zeolitic local atomic structures
via electron microscopy is difficult owing to their low resistance to electron
irradiation. Sub... | 2301.04377v1 |
2023-04-25 | Simulations of Magnetization Reversal in FM/AFM Bilayers With THz Frequency Pulses | It is widely known that antiferromagnets (AFMs) display a high frequency
response in the terahertz (THz) range, which opens up the possibility for
ultrafast control of their magnetization for next generation data storage and
processing applications. However, because the magnetization of the different
sublattices cancel... | 2304.12969v1 |
2023-05-24 | A new class of carbon stabilized austenitic steels resistant to hydrogen embrittlement | High strength steels are susceptible to H-induced failure, which is typically
caused by the presence of diffusible H in the microstructure. The diffusivity
of H in austenitic steels with fcc crystal structure is slow. The austenitic
steels are hence preferred for applications in the hydrogen-containing
atmospheres. How... | 2305.15290v3 |
2023-06-17 | Pseudogap behavior in charge density wave kagome material ScV$_6$Sn$_6$ revealed by magnetotransport measurements | Over the last few years, significant attention has been devoted to studying
the kagome materials AV$_3$Sb$_5$ (A = K, Rb, Cs) due to their unconventional
superconductivity and charge density wave (CDW) ordering. Recently
ScV$_6$Sn$_6$ was found to host a CDW below $\approx$90K, and, like
AV$_3$Sb$_5$, it contains a kag... | 2306.10230v1 |
2023-07-12 | Monolithic Selenium/Silicon Tandem Solar Cells | Selenium is experiencing renewed interest as a promising candidate for the
wide bandgap photoabsorber in tandem solar cells. However, despite the
potential of selenium-based tandems to surpass the theoretical efficiency limit
of single junction devices, such a device has never been demonstrated. In this
study, we prese... | 2307.05996v1 |
2023-10-09 | Colossal c-axis response and lack of rotational symmetry breaking within the kagome plane of the CsV$_3$Sb$_5$ superconductor | The kagome materials AV4$_3$Sb$_5$ (A = K, Rb, Cs) host an intriguing
interplay between unconventional superconductivity and charge-density-waves.
Here, we investigate CsV$_3$Sb$_5$ by combining high-resolution
thermal-expansion, heat-capacity and electrical resistance under strain
measurements. We directly unveil that... | 2310.06102v1 |
2023-10-15 | Parabolic Vector Focus Wave Modes | Weber-type parabolic beams have a transverse intensity profile, which is
parabolically-shaped and can be flexibly controlled. On the other hand, this
type of beams belongs to the family of the so-called nondiffracting beams and
have properties, promising for applications where the shape of the beam is of
an importance.... | 2310.09896v1 |
2023-11-09 | Single-Atom Control of Arsenic Incorporation in Silicon for High-Yield Artificial Lattice Fabrication | Artificial lattices constructed from individual dopant atoms within a
semiconductor crystal hold promise to provide novel materials with tailored
electronic, magnetic, and optical properties. These custom engineered lattices
are anticipated to enable new, fundamental discoveries in condensed matter
physics and lead to ... | 2311.05752v1 |
2023-11-26 | Quantum oscillations in kagome metals (Ti, Zr, Hf)V6Sn6 at Van Hove filling | Kagome materials have recently drawn great attention due to the interplay
between nontrivial band topology, electron correlations, and Van Hove
singularities related many-body orders. Here we report three new vanadium-based
kagome metals, TiV6Sn6, ZrV6Sn6, and HfV6Sn6, and conduct a comprehensive
investigation of their... | 2311.15239v2 |
2023-12-14 | Long-Range Structural Order in a Hidden Phase of Ruddlesden-Popper Bilayer Nickelate La$_3$Ni$_2$O$_7$ | The recent discovery of superconductivity in Ruddlesden-Popper bilayer
nickelate, specifically La$_3$Ni$_2$O$_7$, has generated significant interest
in the exploration of high-temperature superconductivity within this material
family. In this study, we present the crystallographic and electrical
resistivity properties ... | 2312.09200v2 |
2024-03-11 | Active Control of Bound States in the Continuum in Toroidal Metasurfaces | The remarkable properties of toroidal metasurfaces, featuring ultrahigh-Q
bound states in the continuum (BIC) resonances and nonradiating anapole modes,
have garnered significant attention. The active manipulation of toroidal
resonance characteristics offers substantial potential for advancing tunable
metasurfaces. Our... | 2403.06345v1 |
2024-04-11 | Hydrogen Trapping and Embrittlement in Metals -- A Review | Hydrogen embrittlement in metals (HE) is a serious challenge for the use of
high strength materials in engineering practice and a major barrier to the use
of hydrogen for global decarbonization. Here we describe the factors and
variables that determine HE susceptibility and provide an overview of the
latest understandi... | 2404.07736v1 |
1999-07-23 | Unconventional one-magnon scattering resistivity in half metals | Low-temperature resistivity of half-metals is investigated. To date it has
been discussed that the one-magnon scattering process in half-metals is
irrelevant for low-temperature resistivity, due to the fully spin-polarized
electronic structure at the ground state. If one takes into account the
non-rigid-band behavior o... | 9907363v2 |
2002-05-27 | Superconductivity of epsilon-Fe: complete resistive transition | Last year, iron was reported to become superconducting at temperatures below
2K and pressures between 15 and 30 GPa. The evidence presented was a weak
resistivity drop, suppressed by a magnetic field above 0.2 T, and a small
Meissner signal. However, a compelling demonstration, such as the occurrence of
zero resistance... | 0205557v1 |
2002-06-08 | Diffusion theory of spin injection through resistive contacts | Insertion of a resistive contact between a ferromagnetic metal and a
semiconductor microstructure is of critical importance for achieving efficient
spin injection into a semiconductor. However, the equations of the diffusion
theory are rather cumbersome for the junctions including such contacts. A
technique based on de... | 0206129v2 |
2002-08-13 | Resistance of multilayers with long length scale interfacial roughness | The resistance of multilayers with interface roughness on a length scale
which is large compared to the atomic spacing is computed in several cases via
the Boltzmann equation. This type of roughness is common in magnetic
multilayers. When the electronic mean free paths are small compared to the
layer thicknesses, the c... | 0208251v1 |
2004-02-13 | Superconducting Properties under Magnetic Field in Na$_{0.35}$CoO$_{2}{\cdot}1.3$H$_{2}$O Single Crystal | We report the in-plane resistivity and magnetic susceptibility of the layered
cobalt oxide Na$_{0.35}$CoO$_{2}{\cdot}1.3$H$_{2}$O single crystal. The
temperature dependence of the resistivity shows metallic behavior from room
temperature to the superconducting transition temperature $T_{c}$ of 4.5 K.
Sharp resistive tr... | 0402355v1 |
2004-03-22 | Electrical Transport Across an Individual Magnetic Domain Wall in (Ga,Mn)As Microdevices | Recent studies demonstrate that an individual magnetic domain wall (DW) can
be trapped and reproducibly positioned within multiterminal (Ga,Mn)As
microdevices. The electrical resistance obtained from such measurements is
found to be measurably altered by the presence of this single entity. To
elucidate these observatio... | 0403547v1 |
2004-07-30 | Occurrence of Hysteresis like behavior of resistance of $Sb_2 Te_3$ film in heating-cooling cycle | Experimental observations of a peculiar behavior observed on heating and
cooling ${\rm Sb_2Te_3}$ films at different heating and cooling rate are
detailed. The film regained its original resistance, forming a closed loop, on
the completion of the heating-cooling cycle which was reproducible for
identical conditions of ... | 0407796v1 |
2004-08-03 | Non-Gaussian Resistance Fluctuations in Disordered Materials | We study the distribution of resistance fluctuations of conducting thin films
with different levels of internal disorder. The film is modeled as a resistor
network in a steady state determined by the competition between two biased
processes, breaking and recovery of the elementary resistors. The fluctuations
of the fil... | 0408057v1 |
2007-02-26 | Nonpolar resistance switching of metal/binary-transition-metal oxides/metal sandwiches: homogeneous/inhomogeneous transition of current distribution | Exotic features of a metal/oxide/metal (MOM) sandwich, which will be the
basis for a drastically innovative nonvolatile memory device, is brought to
light from a physical point of view. Here the insulator is one of the
ubiquitous and classic binary-transition-metal oxides (TMO), such as Fe2O3,
NiO, and CoO. The sandwic... | 0702564v1 |
2007-11-02 | Effects of Ferromagnetic Magnetic Ordering and Phase Transition on the Resistivity of Spin Current | It has been shown experimentally a long time ago that the magnetic ordering
causes an anomalous behavior of the electron resistivity in ferromagnetic
crystals. Phenomenological explanations based on the interaction between
itinerant electron spins and lattice spins have been suggested to explain these
observations. We ... | 0711.0298v1 |
2008-01-29 | Temperature Dependence of the Spin Resistivity in Ferromagnetic Thin Films | The magnetic phase transition is experimentally known to give rise to an
anomalous temperature-dependence of the electron resistivity in ferromagnetic
crystals. Phenomenological theories based on the interaction between itinerant
electron spins and lattice spins have been suggested to explain these
observations. In thi... | 0801.4444v1 |
2008-02-19 | Advanced resistivity model for arbitrary magnetization orientation applied to a series of compressive- to tensile-strained (Ga,Mn)As layers | The longitudinal and transverse resistivities of differently strained
(Ga,Mn)As layers are theoretically and experimentally studied as a function of
the magnetization orientation. The strain in the series of (Ga,Mn)As layers is
gradually varied from compressive to tensile using (In,Ga)As templates with
different In con... | 0802.2635v1 |
2008-07-28 | Current induced resistance change of magnetic tunnel junctions with ultra-thin MgO tunnel barriers | Ultra-thin magnetic tunnel junctions with low resistive MgO tunnel barriers
are prepared to examine their stability under large current stress. The devices
show magnetoresistance ratios of up to 110 % and an area resistance product of
down to 4.4 ohm micrometer squared. If a large current is applied, a reversible
resis... | 0807.4422v1 |
2009-05-15 | First-principles analysis of spin-disorder resistivity of Fe and Ni | Spin-disorder resistivity of Fe and Ni and its temperature dependence are
analyzed using noncollinear density functional calculations within the
supercell method. Different models of thermal spin disorder are considered,
including the mean-field approximation and the nearest-neighbor Heisenberg
model. Spin-disorder res... | 0905.2606v1 |
2009-06-04 | Resistivity of Graphene Nanoribbon Interconnects | Graphene nanoribbon interconnects are fabricated, and the extracted
resistivity is compared to that of Cu. It is found that the average resistivity
at a given line-width (18nm<W<52nm) is about 3X that of a Cu wire, whereas the
best GNR has a resistivity comparable to that of Cu. The conductivity is found
to be limited ... | 0906.0924v1 |
2009-08-17 | Unipolar Resistance Switching in Amorphous High-k dielectrics Based on Correlated Barrier Hopping Theory | We have proposed a kind of nonvolatile resistive switching memory based on
amorphous LaLuO3, which has already been established as a promising candidate
of high-k gate dielectric employed in transistors. Well-developed unipolar
switching behaviors in amorphous LaLuO3 make it suited for not only logic but
memory applica... | 0908.2379v2 |
2010-05-21 | Highly anisotropic resistivities in the double-exchange model for strained manganites | The highly anisotropic resistivities in strained manganites are theoretically
studied using the two-orbital double-exchange model. At the nanoscale, the
anisotropic double-exchange and Jahn-Teller distortions are found to be
responsible for the robust anisotropic resistivities observed here via Monte
Carlo simulations.... | 1005.3865v1 |
2010-06-28 | Random barrier double-well model for resistive switching in tunnel barriers | The resistive switching phenomenon in MgO-based tunnel junctions is
attributed to the effect of charged defects inside the barrier. The presence of
electron traps in the MgO barrier, that can be filled and emptied, locally
modifies the conductance of the barrier and leads to the resistive switching
effects. A double-we... | 1006.5329v2 |
2010-12-08 | Measuring sheet resistance of CIGS solar cell's window layer by spatially resolved electroluminescence imaging | A spatially resolved electroluminescence (EL) imaging experiment is developed
to measure the local sheet resistance of the window layer, directly on the
completed CIGS cell. Our method can be applied to the EL imaging studies that
are made in fundamental studies as well as in in-line process inspection (1-3).
The EL ex... | 1012.1693v1 |
2011-02-11 | Pressure cycle of superconducting Cs0.8Fe2Se2: a transport study | We report measurements of the temperature and pressure dependence of the
electrical resistivity of single crystalline iron-based chalcogenide
Cs0.8Fe2Se2. In this material superconductivity Tc~30K develops from a normal
state with extremely large resistivity. At ambient pressure a large "hump" in
the resistivity is obs... | 1102.2464v2 |
2011-12-06 | Tunable resistivity of individual magnetic domain walls | Despite the relevance of current-induced magnetic domain wall (DW) motion for
new spintronics applications, the exact details of the current-domain wall
interaction are not yet understood. A property intimately related to this
interaction is the intrinsic DW resistivity. Here, we investigate
experimentally how the resi... | 1112.1239v1 |
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