publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2024-03-20 | The influence of hydrogen on the electronic structure in transition metallic glasses | We investigate the influence of hydrogen on the electronic structure of a
binary transition metallic glass of V$_{80}$Zr$_{20}$. We examine the
hybridization between the hydrogen and metal atoms with the aid of hard x-ray
photoelectron spectroscopy. Combined with ab initio density functional theory,
we are able to show... | 2403.13371v1 |
2024-04-07 | Morphological stability of electrostrictive thin films | A large electric field is typically present in anodic or passive oxide films.
Stresses induced by such a large electric field are critical in understanding
the breakdown mechanism of thin oxide films and improving their corrosion
resistance. In this work, we consider electromechanical coupling through the
electrostrict... | 2404.05093v1 |
2024-04-11 | Respective Roles of Electron-Phonon and Electron-Electron Interactions in the Transport and Quasiparticle Properties of SrVO$_3$ | The spectral and transport properties of strongly correlated metals, such as
SrVO$_3$ (SVO), are widely attributed to electron-electron ($e$-$e$)
interactions, with lattice vibrations (phonons) playing a secondary role. Here,
using first-principles electron-phonon ($e$-ph) and dynamical mean field theory
calculations, ... | 2404.07772v1 |
2024-04-16 | Strain-dependent Insulating State and Kondo Effect in Epitaxial SrIrO$_{3}$ Films | The large spin-orbit coupling in iridium oxides plays a significant role in
driving novel physical behaviors, including emergent phenomena in the films and
heterostructures of perovskite and Ruddlesden-Popper iridates. In this work, we
study the role of epitaxial strain on the electronic behavior of thin SrIrO$_3$
film... | 2404.10909v1 |
2024-04-24 | Low thermal boundary resistance at bonded GaN/diamond interface by controlling ultrathin heterogeneous amorphous layer | Thermal boundary resistance (TBR) in semiconductor-on-diamond structure
bottlenecks efficient heat dissipation in electronic devices. In this study, to
reduce the TBR between GaN and diamond, surface-activated bonding with a hybrid
SiOx-Ar ion source was applied to achieve an ultrathin interfacial layer. The
simultaneo... | 2404.15738v1 |
2024-05-03 | Local insulator-to-superconductor transition in amorphous InO$_x$ films modulated by e-beam irradiation | We present a novel method enabling precise post-fabrication modulation of the
electrical resistance in micrometer-scale regions of amorphous indium oxide
(a-InO$_x$) films. By subjecting initially insulating films to an electron beam
at room temperature, we demonstrate that the exposed region of the films
becomes super... | 2405.02276v1 |
2024-05-27 | Resistance Distribution of Decoherent Quantum Hall-Superconductor Edges | We study the probability distribution of the resistance, or equivalently the
charge transmission, of a decoherent quantum Hall-superconductor edge, with the
decoherence coming from metallic puddles along the edge. Such metallic puddles
may originate from magnetic vortex cores or other superconductivity suppressing
pert... | 2405.17550v1 |
2017-12-13 | Magnetotransport in a model of a disordered strange metal | Despite much theoretical effort, there is no complete theory of the 'strange'
metal state of the high temperature superconductors, and its
linear-in-temperature, $T$, resistivity. Recent experiments showing an
unexpected linear-in-field, $B$, magnetoresistivity have deepened the puzzle.
We propose a simple model of iti... | 1712.05026v3 |
2018-10-05 | Static and Dynamic Signatures of Anisotropic Electronic Phase Separation in La2/3Ca1/3MnO3 Thin Films under Anisotropic Strain | The electronic phase separation (EPS) of optimally doped La2/3Ca1/3MnO3
(LCMO) thin films under various degrees of anisotropic strain is investigated
by static magnetotransport and dynamic relaxation measurements. Three LCMO
films were grown simultaneously on (001) NdGaO3 (NGO) substrates by pulsed
laser deposition, an... | 1810.02516v1 |
2023-07-13 | Hydrodynamic magnetotransport in two-dimensional electron systems with macroscopic obstacles | In high-quality conductors, the hydrodynamic regime of electron transport has
been recently realized. In this work we theoretically investigate
magnetotransport of a viscous electron fluid in samples with
electron-impermeable obstacles. We use the two approaches to describe the fluid
flow. The first one is based on the... | 2307.06705v2 |
2023-11-13 | Pruning random resistive memory for optimizing analogue AI | The rapid advancement of artificial intelligence (AI) has been marked by the
large language models exhibiting human-like intelligence. However, these models
also present unprecedented challenges to energy consumption and environmental
sustainability. One promising solution is to revisit analogue computing, a
technique ... | 2311.07164v1 |
2022-06-09 | Identification of High-Dielectric Constant Compounds from Statistical Design | The discovery of high-dielectric materials is crucial to increasing the
efficiency of electronic devices and batteries. Here, we report three
previously unexplored materials with very high dielectric constants (69 $<$
$\epsilon$ $<$ 101) and large band gaps (2.9$<$ $E_{\text{g}}$(eV) $<$ 5.5)
obtained by screening mate... | 2206.04750v1 |
1997-10-23 | Stripes, Non-Fermi-Liquid Behavior, and Two-Component Transport in the High-Tc Cuprates | Non-Fermi-liquid features of the high-Tc cuprates, and specifically the
systematic behavior of the resistivity, Hall constant, and thermoelectric
power, are shown to result from an electronic structure based on "large-U" and
"small-U" orbitals, and the resulting striped structure. | 9710254v1 |
1998-12-03 | Anomalous Magnetothermal Resistance of High-Tc Superconductors: Anomalous Cyclotron Orbits at a Dirac Point | I derive equations of motion for quasiparticles near the nodes in the d-wave
gap of high Tc superconductors. Previous versions have not properly taken into
account the spatial dependence of the gap parameter phase. The results are
compatible with magnetothermal conductivity measurements in the superconducting
phase by ... | 9812063v1 |
1999-05-18 | On Anisotropic Transport in High Landau Levels | We would like to point out that: (i) according to the edge-bulk transport
models for the quantum Hall regime, the direction of low bulk conductance is
actually perpendicular to that expected naively; and (ii) the values of
experimental "high resistance" peaks correspond to value of bulk conductance
$\approx 1 e^{2}/h$. | 9905237v1 |
2001-11-03 | Stability of antiferromagnetism at high magnetic fields in Mn3Si | We report low temperature measurements of the specific heat, resistivity and
magnetisation of the itinerant antiferromagnet Mn3Si. The unprecedented
stability of the magnetic state to high magnetic field up to 14 T inferred from
the invariance of these bulk properties is incompatible with itinerant
magnetism expected o... | 0111048v1 |
2003-11-12 | The Driving Force of Superconducting Transition in High Temperature Superconductors | We show that both the kinetic energy and the exchange energy of the t-J model
can be read off from the optical data. We show that the optical data indicates
that the superconducting transition in high temperature superconductors is
kinetic energy driven and the exchange energy resist the transition. We also
show that k... | 0311282v1 |
2009-04-10 | Linear in temperature resistivity of scalar fermions: application to high Tc cuprates | no longer applicable | 0904.1746v4 |
2024-01-06 | The 4-adic complexity of quaternary sequences with low autocorrelation and high linear complexity | Recently, Jiang et al. proposed several new classes of quaternary sequences
with low autocorrelation and high linear complexity by using the inverse Gray
mapping (JAMC, \textbf{69} (2023): 689--706). In this paper, we estimate the
4-adic complexity of these quaternary sequences. Our results show that these
sequences ha... | 2401.03204v1 |
2020-08-27 | Modeling cross-field demagnetization of superconducting stacks and bulks for up to 100 tapes and 2 million cycles | Superconducting stacks and bulks can act as very strong magnets (more than 17
T), but they lose their magnetization in the presence of alternating (or
ripple) transverse magnetic fields, due to the dynamic magneto-resistance. This
demagnetization is a major concern for applications requiring high run times,
such as mot... | 2008.12006v2 |
2021-03-07 | 130 mA/mm $β$-Ga$_2$O$_3$ MESFET with Low-Temperature MOVPE-Regrown Ohmic Contacts | We report on the demonstration of metalorganic vapor phase epitaxy-regrown
(MOVPE) ohmic contacts in an all MOVPE-grown $\beta$-Ga$_2$O$_3$
metal-semiconductor field effect transistor (MESFET). The low-temperature
(600$^{\circ}$C) heavy (n$^{+}$) Si-doped regrown layers exhibit extremely high
conductivity with sheet re... | 2103.04275v2 |
2010-08-31 | Uniaxial linear resistivity of superconducting La(1.905)Ba(0.095)CuO(4) induced by an external magnetic field | We present an experimental study of the anisotropic resistivity of
superconducting La(2-x)Ba(x)CuO(4) with x=0.095 and transition temperature
Tc=32 K. In a magnetic field perpendicular to the CuO(2) layers, H(perp), we
observe that the resistivity perpendicular to the layers, \rho(perp), becomes
finite at a temperature... | 1009.0031v4 |
2014-07-03 | Phonon-limited resistivity of graphene by first-principle calculations: electron-phonon interactions, strain-induced gauge field and Boltzmann equation | Electron-phonon coupling in graphene is extensively modeled and simulated
from first principles. We find that using an accurate model for the
polarizations of the acoustic phonon modes is crucial to obtain correct
numerical results. The interactions between electrons and acoustic phonon
modes, the gauge field and defor... | 1407.0830v2 |
2015-08-10 | Fracture resistance of zigzag single walled carbon nanotubes | Brittle fracture is one of the important failure modes of Single-Walled
Carbon Nanotube (SWNT) due to mechanical loading. In this paper, the fracture
resistance of zigzag SWNTs with preexisting defects is calculated using
fracture mechanics concepts based on atomistic simulations. The problem of
unstable crack growth a... | 1508.02129v1 |
2015-11-23 | CPP Magnetoresistance of Magnetic Multilayers: A critical review | We present a comprehensive review of data and analysis of Giant (G)
Magnetoresistance (MR) with Current-flow Perpendicular-to-layer-Planes (CPP-MR)
of magnetic multilayers [F/N]n (n = number of repeats) with alternating
nanoscale layers of ferromagnetic (F) and non-magnetic (N) metals. GMR, a large
change in resistance... | 1511.07387v1 |
2016-07-01 | Size-dependence of nanosecond-scale spin-torque switching in perpendicularly magnetized tunnel junctions | We time-resolve the spin-transfer-torque-induced switching in perpendicularly
magnetized tunnel junctions of diameters from 50 to 250 nm in the thermally
activated regime. When the field and the spin-torque concur to favor the P to
AP transition, the reversal yields monotonic resistance ramps that can be
interpreted as... | 1607.00260v1 |
2018-03-08 | Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe$_{1-y}$Co$_y$Ge films | Epitaxial films of the B20-structure alloy Fe$_{1-y}$Co$_y$Ge were grown by
molecular beam epitaxy on Si (111) substrates. The magnetization varied
smoothly from the bulk-like values of one Bohr magneton per Fe atom for FeGe to
zero for non-magnetic CoGe. The chiral lattice structure leads to a
Dzyaloshinskii-Moriya in... | 1803.03281v2 |
2020-07-09 | Physical properties revealed by transport measurements on superconducting Nd$_{0.8}$Sr$_{0.2}$NiO$_{2}$ thin films | The newly found superconductivity in infinite-layer nickelate superconducting
films has attracted much attention, because their crystalline and electronic
structures are similar to high-$T_c$ cuprate superconductors. The upper
critical field can provide much information on superconductivity, but detailed
experimental d... | 2007.04884v2 |
2020-11-11 | Interface controlled thermal properties of ultra-thin chalcogenide-based phase change memory devices | Phase change memory (PCM) is a rapidly growing technology that not only
offers advancements in storage-class memories but also enables in-memory data
storage and processing towards overcoming the von Neumann bottleneck. In PCMs,
the primary mechanism for data storage is thermal excitation. However, there is
a limited b... | 2011.05492v1 |
2022-03-22 | Effect of ECAP and heat treatment on mechanical properties, stress relaxation behavior and corrosion resistance of a 321-type austenitic steel with increased delta-ferrite content | Hot rolled commercial metastable austenitic steel 0.8C-18Cr-10Ni-0.1Ti
(Russian industrial name 08X18H10T, analog 321L) with strongly elongated thin
delta-ferrite particles in its microstructure was the object of investigations.
The lengths of these delta-particles were up to 500 mkm, the thickness was 10
mkm. The form... | 2203.12102v1 |
2022-10-18 | Sensing Remote Bulk Defects Through Resistance Noise in a Large Area Graphene Field Effect Transistor | Substrate plays a crucial role in determining transport and low frequency
noise behavior of graphene field effect devices. Typically, heavily dope
Si/SiO$_2$ substrate is used to fabricate these devices for efficient gating.
Trapping-detrapping processes closed to the graphene/substrate interface are
the dominant sourc... | 2210.09851v1 |
2023-11-24 | Multi-tap Resistive Sensing and FEM Modeling enables Shape and Force Estimation in Soft Robots | We address the challenge of reliable and accurate proprioception in soft
robots, specifically those with tight packaging constraints and relying only on
internally embedded sensors. While various sensing approaches with single
sensors have been tried, often with a constant curvature assumption, we look
into sensing loc... | 2311.14566v1 |
2024-04-05 | Direct Electrical Detection of Spin Chemical Potential Due to Spin Hall Effect in $β$-Tungsten and Platinum Using a Pair of Ferromagnetic and Normal Metal Voltage probes | The phenomenon of Spin Hall Effect (SHE) generates a pure spin current
transverse to an applied current in materials with strong spin-orbit coupling,
although not detectable through conventional electrical measurement. An
intuitive Hall effect like measurement configuration is implemented to directly
measure pure spin ... | 2404.03934v1 |
2013-02-11 | Feedback from Winds and Supernovae in Massive Stellar Clusters. I: Hydrodynamics | We use 3D hydrodynamical models to investigate the effects of massive star
feedback from winds and supernovae on inhomogeneous molecular material left
over from the formation of a massive stellar cluster. We simulate the
interaction of the mechanical energy input from a cluster with 3 O-stars into a
giant molecular clo... | 1302.2443v1 |
2016-12-22 | Insight into the Role of Oxygen in Phase-Change Material GeTe | Oxygen is widely used to tune the performance of chalcogenide phase-change
materials in the usage of phase-Change random access memory (PCRAM) which is
considered as the most promising next-generation non-volatile memory. However,
the microscopic role of oxygen in the write-erase process, i.e., the reversible
phase tra... | 1612.07467v1 |
2013-12-20 | Lessons from a Large-Scale Assessment: Results from Conceptual Inventories | We report the conceptual inventory results of a large-scale assessment
project at a large university. We studied an attempt at introducing materials
and instructional methods informed by physics education research (PER-informed
materials) into a department where most instruction has been traditional and a
significant n... | 1312.6000v1 |
2017-11-19 | Elastomeric focusing enables application of hydraulic principles to solid materials in order to create micromechanical actuators with giant displacements | A continuing challenge in material science is how to create active materials
in which shape changes or displacements can be generated electrically or
thermally. Here we borrow principles from hydraulics, in particular that
confined geometries can be used to focus expansion into large displacements, to
create solid mate... | 1711.07102v1 |
2020-04-29 | Superconducting Materials for Microwave Kinetic Inductance Detectors | The superconducting materials that make up an MKID have a significant effect
on its performance. The $T_\textrm{c}$ and normal state resistivity
$\rho_\textrm{N}$ of the film determine the penetration depth $\lambda$ and
therefore how much kinetic inductance it has. The ratio of kinetic inductance
to total inductance (... | 2004.14576v1 |
2018-12-20 | Dynamics of Fluid Driven Autonomous Materials: Interconnected Fluid Filled Cavities to Realize Autonomous Materials | The study of elastic structures embedded with fluid-filled cavities received
considerable attention in fields such as autonomous materials, sensors,
actuators, and smart systems. This work studies an elastic beam embedded with a
set of fluid-filled bladders, similar to a honeycomb structure, which are
interconnected vi... | 1812.08717v2 |
2019-01-14 | Anomalous relation between in-plane and out-of-plane stiffnesses in 2D networked materials | For thin networked materials, which are spatial discrete structures
constructed by continuum components, a paradox on the effective thickness
defined by the in-plane and out-of-plane stiffnesses is found, i.e. the
effective thickness is not a constant but varies with loading modes. To reveal
the mechanism underneath th... | 1901.04203v1 |
2019-10-16 | Stumbling Through the Research Wilderness, Standard Methods to Shine Light on Electrically Conductive Nanocomposites for Future Health-Care Monitoring | Electrically conductive nanocomposites are an exciting ever expanding area of
research that has yielded many new technologies for wearable health devices.
Acting as strain sensing materials, they have paved the way towards real time
medical diagnostic tools that may very well lead to a golden age of healthcare.
Current... | 1910.07249v1 |
2022-04-11 | Electron transport in the single-layer semiconductor | Two-dimensional (2D) materials are a new class of materials with interesting
physical properties and applications ranging from nanoelectronics to sensing
and photonics. In addition to graphene, the most studied 2D material,
monolayers of other layered materials such as semiconducting dichalcogenides
MoS2 or WSe2 are ga... | 2204.04850v1 |
2022-12-15 | Physics-Informed Neural Networks for Material Model Calibration from Full-Field Displacement Data | The identification of material parameters occurring in constitutive models
has a wide range of applications in practice. One of these applications is the
monitoring and assessment of the actual condition of infrastructure buildings,
as the material parameters directly reflect the resistance of the structures to
externa... | 2212.07723v2 |
2022-07-15 | Screening 0D materials for 2D nanoelectronics applications | As nanoelectronic devices based on two-dimensional (2D) materials are moving
towards maturity, optimization of the properties of the active 2D material must
be accompanied by equal attention to optimizing the properties of and the
interfaces to the other materials around it, such as electrodes, gate
dielectrics, and th... | 2207.07364v1 |
2015-08-07 | Pressure Effects on Superconducting Properties of the BiS2-Based Superconductor Bi2(O,F)S2 | Pressure effects on a recently discovered BiS2-based superconductor
Bi2(O,F)S2 (Tc = 5.1 K) were examined via two different methods; high pressure
resistivity measurement and high pressure annealing. The effects of these two
methods on the superconducting properties of Bi2(O,F)S2 were significantly
different although i... | 1508.01656v1 |
2018-09-11 | Atomic positions independent descriptor for machine learning of material properties | The high-throughput screening of periodic inorganic solids using machine
learning methods requires atomic positions to encode structural and
compositional details into appropriate material descriptors. These atomic
positions are not available {\it a priori} for new materials which severely
limits exploration of novel m... | 1809.03960v2 |
2019-01-14 | Materials discovery and properties prediction in thermal transport via materials informatics: a mini-review | There has been an increasing demand for materials with special thermal
properties, whereas experimental discovery is high-cost and time-consuming. The
emerging discipline `Materials Informatics' is an effective approach that can
accelerate materials development by combining material science and big data
technique. Rece... | 1901.04133v1 |
2024-02-07 | Are LLMs Ready for Real-World Materials Discovery? | Large Language Models (LLMs) create exciting possibilities for powerful
language processing tools to accelerate research in materials science. While
LLMs have great potential to accelerate materials understanding and discovery,
they currently fall short in being practical materials science tools. In this
position paper... | 2402.05200v1 |
1997-11-19 | Inter-Band Pairing Theory of Superconductivity | A model for high temperature superconductors based on the idea of Cooper
pairs comprised of electrons from different bands is studied. We propose that
the two bands relevant for the cuprates are comprised of Cu dx2-y2, dz2, planar
O psigma, and apical O pz orbitals. Along the diagonal, kx=ky in the Brillouin
zone, the ... | 9711170v2 |
2001-02-01 | The electronic state of vortices in YBa2Cu3Oy investigated by complex surface impedance measurement | The electromagnetic response to microwaves in the mixed state of
YBa2Cu3Oy(YBCO) was measured in order to investigate the electronic state
inside and outside the vortex core. The magnetic-field dependence of the
complex surface impedance at low temperatures was in good agreement with a
general vortex dynamics descripti... | 0102021v2 |
2010-06-23 | Physical properties of FeSe$_{0.5}$Te$_{0.5}$ single crystals grown under different conditions | We report on structural, magnetic, conductivity, and thermodynamic studies of
FeSe$_{0.5}$Te$_{0.5}$ single crystals grown by self-flux and Bridgman methods.
The samples were prepared from starting materials of different purity at
various temperatures and cooling rates. The lowest values of the susceptibility
in the no... | 1006.4453v2 |
2011-01-25 | Extreme 54Cr-rich nano-oxides in the CI chondrite Orgueil -Implication for a late supernova injection into the Solar System | Systematic variations in 54Cr/52Cr ratios between meteorite classes (Qin et
al., 2010a; Trinquier et al., 2007) point to large scale spatial and/or
temporal isotopic heterogeneity in the solar protoplanetary disk. Two
explanations for these variations have been proposed, with important
implications for the formation of... | 1101.4949v1 |
2011-12-02 | Surviving the hole I: Spatially resolved chemistry around Sgr A* | The interstellar region within the few central parsecs around the
super-massive black hole, Sgr A* at the very Galactic center is composed by a
number of overlapping molecular structures which are subject to one of the most
hostile physical environments in the Galaxy. We present high resolution
(4"x3"~0.16x0.11 pc) int... | 1112.0566v1 |
2012-09-17 | Transport, Thermal, and Magnetic Properties of the Narrow-Gap Semiconductor CrSb2 | Resistivity, Hall effect, Seebeck coefficient, thermal conductivity, heat
capacity, and magnetic susceptibility data are reported for CrSb2 single
crystals. In spite of some unusual features in electrical transport and Hall
measurements below 100 K, only one phase transition is found in the temperature
range from 2 to ... | 1209.3676v2 |
2013-11-13 | Thermodynamic and transport properties of single crystalline RCo$_{2}$Ge$_{2}$ (R = Y, La-Nd, Sm-Tm) | Single crystals of RCo$_{2}$Ge$_{2}$ (R = Y, La-Nd, Sm-Tm) were grown using a
self-flux method and were characterized by room-temperature powder x-ray
diffraction; anisotropic, temperature and field dependent magnetization;
temperature and field dependent, in-plane resistivity; and specific heat
measurements. In this s... | 1311.3321v1 |
2014-07-19 | Ferromagnetic cluster spin-glass behavior in PrRhSn3 | We report the synthesis, structure, and magnetic and transport properties of
a new ternary intermetallic compound PrRhSn3 which crystallizes in LaRuSn3-type
cubic structure (space group Pm-3n). At low applied fields the dc magnetic
susceptibility exhibits a sharp anomaly below 6~K with an irreversible behavior
in zero ... | 1407.5201v1 |
2015-10-01 | Are quantum spin Hall edge modes more resilient to disorder, sample geometry and inelastic scattering than quantum Hall edge modes? | On the surface of 2D Topological insulators occur 1D quantum spin Hall(QSH)
edge modes with Dirac like dispersion. Unlike quantum Hall(QH) edge modes which
occur at high magnetic fields in 2DEGs, the occurrence of QSH edge modes is
because of spin-orbit scattering in the bulk of the material. These QSH edge
modes are s... | 1510.00105v2 |
2015-10-06 | Conservative regularization of compressible flow and ideal magnetohydrodynamics | Ideal systems like MHD and Euler flow may develop singularities in vorticity
(w = curl v). Viscosity and resistivity are dissipative regularizations. We
propose a minimal, local, conservative, nonlinear, dispersive regularization of
compressible flow and ideal MHD, in analogy with the KdV regularization of the
1D Hopf ... | 1510.01606v2 |
2015-10-20 | Photoconversion in the HIT solar cells: Theory vs experiment | We obtain theoretical expressions for the photocurrent in the Heterojunction
solar cells with Intrinsic Thin layer (HIT cells). Our calculations take into
account tunneling of electrons and holes through wide-bandgap layers of
$\alpha$-Si:H or $\alpha$-SiC:H. We introduce the criteria, under which
tunneling does not le... | 1510.06007v2 |
2016-01-16 | Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal | Weyl semimetals provide the realization of Weyl fermions in solid-state
physics. Among all the physical phenomena that are enabled by Weyl semimetals,
the chiral anomaly is the most unusual one. Here, we report signatures of the
chiral anomaly in the magneto-transport measurements on the first Weyl
semimetal TaAs. We s... | 1601.04208v2 |
2016-08-15 | Physical properties of single crystalline $R$Mg$_{2}$Cu$_{9}$ ($R$ = Y, Ce-Nd, Gd-Dy, Yb) and the search for in-plane magnetic anisotropy in hexagonal systems | Single crystals of $R$Mg$_{2}$Cu$_{9}$ ($R$=Y, Ce-Nd, Gd-Dy, Yb) were grown
using a high-temperature solution growth technique and were characterized by
measurements of room-temperature x-ray diffraction, temperature-dependent
specific heat and temperature-, field-dependent resistivity and anisotropic
magnetization. YM... | 1608.04310v1 |
2017-06-19 | Chronic neural probe for simultaneous recording of single-unit, multi-unit, and local field potential activity from multiple brain sites | Drug resistant focal epilepsy can be treated by resecting the epileptic focus
requiring a precise focus localization using stereoelectroencephalography
(SEEG) probes. As commercial SEEG probes offer only a limited spatial
resolution, probes of higher channel count and design freedom enabling the
incorporation of macro ... | 1706.05899v1 |
2017-06-29 | Effects of Incomplete Ionization on Beta - Ga2O3 Power Devices: Unintentional Donor with Energy 110 meV | Understanding the origin of unintentional doping in Ga2O3 is key to
increasing breakdown voltages of Ga2O3 based power devices. Therefore,
transport and capacitance spectroscopy studies have been performed to better
understand the origin of unintentional doping in Ga2O3. Previously unobserved
unintentional donors in co... | 1706.09960v2 |
2018-01-24 | Superconductivity in the vicinity of a ferroelectric quantum phase transition | Superconductivity has been observed in doped SrTiO$_3$ at charge-carrier
densities below 10$^{18}$ cm$^{-3}$, where the density of states at the Fermi
level of the itinerant electrons is several orders of magnitude lower than that
of conventional metals. In terms of the Bardeen-Cooper-Schrieffer description,
this impli... | 1801.08121v2 |
2018-03-01 | Conductance relaxation in GeBiTe - slow thermalization in an open quantum system | This work describes the microstructure and transport properties of GeBiTe
films with emphasis on their out-of-equilibrium behavior.
Persistent-photoconductivity (PPC), previously studied in the phase-change
compound GeSbTe is also quite prominent in this system. Much weaker PPC
response is observed in the pure GeTe com... | 1803.00564v1 |
2018-04-12 | Bulk and surface characterization of In$_2$O$_3$(001) single crystals | A comprehensive bulk and surface investigation of high-quality
In$_2$O$_3$(001) single crystals is reported. The transparent-yellow,
cube-shaped single crystals were grown using the flux method. Inductively
coupled plasma mass spectrometry (ICP-MS) reveals small residues of Pb, Mg, and
Pt in the crystals. Four-point-pr... | 1804.04478v1 |
2018-04-19 | Modelling massive-star feedback with Monte Carlo radiation hydrodynamics: photoionization and radiation pressure in a turbulent cloud | We simulate a self-gravitating, turbulent cloud of 1000 Msol with
photoionization and radiation pressure feedback from a 34 Msol star. We use a
detailed Monte Carlo radiative transfer scheme alongside the hydrodynamics to
compute photoionization and thermal equilibrium with dust grains and multiple
atomic species. Usin... | 1804.07309v1 |
2016-06-06 | Origin and magnitude of 'designer' spin-orbit interaction in graphene on semiconducting transition metal dichalcogenides | We use a combination of experimental techniques to demonstrate a general
occurrence of spin-orbit interaction (SOI) in graphene on transition metal
dichalcogenide (TMD) substrates. Our measurements indicate that SOI is
ultra-strong and extremely robust, despite it being merely
interfacially-induced, with neither graphe... | 1606.01789v1 |
2019-02-14 | Quantum magnetic imaging of iron biomineralisation in teeth of the chiton Acanthopleura hirtosa | Iron biomineralisation is critical for life. Nature capitalises on the
physical attributes of iron biominerals for a variety of functional, structural
and sensory applications. Although magnetism is an integral property of iron
biominerals, the role it plays in their nano-assembly remains a fundamental,
unanswered ques... | 1902.09637v2 |
2019-05-24 | Interference measurements of non-Abelian e/4 & Abelian e/2 quasiparticle braiding | The quantum Hall states at filling factors $\nu=5/2$ and $7/2$ are expected
to have Abelian charge $e/2$ quasiparticles and non-Abelian charge $e/4$
quasiparticles. The non-Abelian statistics of the latter has been predicted to
display a striking interferometric signature, the even-odd effect. By measuring
resistance o... | 1905.10248v5 |
2020-03-21 | Fluctuation dynamo in a weakly collisional plasma | The turbulent amplification of cosmic magnetic fields depends upon the
material properties of the host plasma. In many hot, dilute astrophysical
systems, such as the intracluster medium (ICM) of galaxy clusters, the rarity
of particle--particle collisions allows departures from local thermodynamic
equilibrium. These de... | 2003.09760v2 |
2020-09-30 | OMC-1 dust polarisation in ALMA Band 7: Diagnosing grain alignment mechanisms in the vicinity of Orion Source I | We present ALMA Band 7 polarisation observations of the OMC-1 region of the
Orion molecular cloud. We find that the polarisation pattern observed in the
region is likely to have been significantly altered by the radiation field of
the $>10^{4}$ L$_{\odot}$ high-mass protostar Orion Source I. In the
protostar's opticall... | 2009.14758v2 |
2016-03-22 | Strongly Anisotropic Thermal and Electrical Conductivities of Self-assembled Silver Nanowire Network | Heat dissipation issues are the emerging challenges in the field of flexible
electronics. Thermal management of flexible electronics creates a demand for
flexible materials with highly anisotropic thermal conductivity, which work as
heat spreaders to remove excess heat in the in-plane direction and as heat
shields to p... | 1603.06845v1 |
2017-05-18 | Superconductivity and charge carrier localization in ultrathin $\mathbf{{La_{1.85}Sr_{0.15}CuO_4}/{La_2CuO_4}}$ bilayers | $\mathrm{La_{1.85}Sr_{0.15}CuO_4}$/$\mathrm{La_2CuO_4}$ (LSCO15/LCO) bilayers
with a precisely controlled thickness of N unit cells (UCs) of the former and M
UCs of the latter ([LSCO15\_N/LCO\_M]) were grown on (001)-oriented {\slao}
(SLAO) substrates with pulsed laser deposition (PLD). X-ray diffraction and
reciprocal... | 1705.06587v1 |
2017-07-18 | Extremely large magnetoresistance and Kohler's rule in PdSn4: a complete study of thermodynamic, transport and band structure properties | The recently discovered material PtSn$_4$ is known to exhibit extremely large
magnetoresistance (XMR) that also manifests Dirac arc nodes on the surface.
PdSn$_4$ is isostructure to PtSn$_4$ with same electron count. We report on the
physical properties of high quality single crystals of PdSn$_4$ including
specific hea... | 1707.05706v2 |
2019-03-19 | Pressure-induced superconductivity in layered pnictogen diselenide NdO$_{0.8}$F$_{0.2}$Sb$_{1-x}$Bi$_x$Se$_2$ (x = 0.3 and 0.7) | Polycrystalline samples of layered pnictogen diselenide NdO0.8F0.2Sb1-xBixSe2
(x = 0 to 0.8) were successfully synthesized by solid-state reactions.
Electrical resistivity in the synthesized samples was systematically decreased
with an increase in Bi content x. Crystal structure analysis using synchrotron
X-ray diffrac... | 1903.07791v3 |
2015-06-18 | Evolution of electronic states in n-type copper oxide superconductor via electric double layer gating | Since the discovery of n-type copper oxide superconductors, the evolution of
electron- and hole-bands and its relation to the superconductivity have been
seen as a key factor in unveiling the mechanism of high-Tc superconductors. So
far, the occurrence of electrons and holes in n-type copper oxides has been
achieved by... | 1506.05727v1 |
2019-01-08 | Thermal bridging of graphene nanosheets via covalent molecular junctions. a Non-Equilibrium Green Functions Density Functional Tight-Binding study | Despite the uniquely high thermal conductivity of graphene is well known, the
exploitation of graphene into thermally conductive nanomaterials and devices is
limited by the inefficiency of thermal contacts between the individual
nanosheets. A fascinating yet experimentally challenging route to enhance
thermal conductan... | 1901.02396v2 |
2019-01-09 | Printing surface charge as a new paradigm to program droplet transport | Directed, long-range and self-propelled transport of droplets on solid
surfaces, especially on water repellent surfaces, is crucial for many
applications from water harvesting to bio-analytical devices. One appealing
strategy to achieve the preferential transport is to passively control the
surface wetting gradients, t... | 1901.02612v1 |
2019-11-06 | Absence of superconductivity in bulk Nd$_{1-x}$Sr$_x$NiO$_2$ | Recently superconductivity at 9 - 15 K was discovered in an infinite-layer
nickelate (Nd$_{0.8}$Sr$_{0.2}$NiO$_2$ films), which has received enormous
attention. Since the $Ni^{1+}$ ionic state in NdNiO$_2$ may have the $3d^9$
outer-shell electronic orbit which resembles that of the cuprates, it is very
curious to know ... | 1911.02420v3 |
2019-11-12 | Absence of Superconductivity in Nd$_{0.8}$Sr$_{0.2}$NiO$_x$ Thin Films without Chemical Reduction | The recently reported superconductivity 9-15 K in Nd0.8Sr0.2NiO2/SrTiO3
heterostructures that were fabricated by a soft-chemical topotactic reduction
approach based on precursor Nd0.8Sr0.2NiO3 thin films deposited on SrTiO3
substrates, has excited an immediate surge of research interest. To explore an
alternative physi... | 1911.04662v2 |
2019-11-19 | Multi-GMR sensors controlled by additive dipolar coupling | Vertical packaging of multiple Giant Magnetoresistance (multi-GMR) stacks is
a very interesting noise reduction strategy for local magnetic sensor
measurements, which has not been reported experimentally so far. Here, we have
fabricated multi-GMR sensors (up to 12 repetitions) keeping good GMR ratio,
linearity and low ... | 1911.08592v1 |
2020-07-30 | The effect of structural and magnetic disorder on the 3$d$-5$d$ exchange interactions of La$_{2-x}$Ca$_{x}$CoIrO$_{6}$ | The delicate balance between spin-orbit coupling, Coulomb repulsion and
crystalline electric field interactions observed in Ir-based oxides is usually
manifested as exotic magnetic behavior. Here we investigate the evolution of
the exchange coupling between Co and Ir for partial La substitution by Ca in
La$_{2}$CoIrO$_... | 2007.15318v1 |
2020-09-30 | A model for atomic precision p-type doping with diborane on Si(100)-2$\times$1 | Diborane (B$_2$H$_6$) is a promising molecular precursor for atomic precision
p-type doping of silicon that has recently been experimentally demonstrated [T.
{\v{S}}kere{\v{n}}, \textit{et al.,} Nature Electronics (2020)]. We use density
functional theory (DFT) calculations to determine the reaction pathway for
diboran... | 2010.00129v1 |
2020-10-26 | Solubility limit of Ge Dopants in AlGaN: a Chemical and Microstructural Investigation down to the Nanoscale | Attaining low resistivity AlGaN layers is the keystone to improve the
efficiency of light emitting devices in the ultraviolet spectral range. Here,
we present a microstructural analysis of Ge-doped AlGaN samples with Al mole
fraction from x=0 to 1, and nominal doping level in the range of 1E20 cm-3,
together with the m... | 2010.13577v1 |
2020-10-26 | Domain Wall-Magnetic Tunnel Junction Spin Orbit Torque Devices and Circuits for In-Memory Computing | There are pressing problems with traditional computing, especially for
accomplishing data-intensive and real-time tasks, that motivate the development
of in-memory computing devices to both store information and perform
computation. Magnetic tunnel junction (MTJ) memory elements can be used for
computation by manipulat... | 2010.13879v1 |
2020-12-30 | Cooperation in a fluid swarm of fuel-free micro-swimmers | Cooperation is vital for the survival of a swarm$^1$. Large scale cooperation
allows murmuring starlings to outmaneuver preying falcons$^2$, shoaling
sardines to outsmart sea lions$^3$, and homo sapiens to outlive their
Pleistocene peers$^4$. On the micron-scale, bacterial colonies show excellent
resilience thanks to t... | 2012.15087v1 |
2021-02-09 | Evidence for multiband superconductivity and charge density waves in Ni-doped ZrTe$_2$ | We carried out a comprehensive study of the electronic, magnetic, and
thermodynamic properties of Ni-doped ZrTe$_2$. High quality
Ni$_{0.04}$ZrTe$_{1.89}$ single crystals show a possible coexistence of charge
density waves (CDW, T$_{CDW}\approx287$\,K) with superconductivity (T$_c\approx
4.1$\,K), which we report here ... | 2102.04812v3 |
2021-02-18 | $f$-electron hybridised metallic Fermi surface in magnetic field-induced metallic YbB$_{12}$ | The nature of the Fermi surface observed in the recently discovered family of
unconventional insulators starting with SmB$_6$ and subsequently YbB$_{12}$ is
a subject of intense inquiry. Here we shed light on this question by comparing
quantum oscillations between the high magnetic field-induced metallic regime in
YbB$... | 2102.09545v2 |
2021-05-18 | Microwave response of a metallic superconductor subject to a high-voltage gate electrode | Processes that lead to the critical-current suppression and change of
impedance of a superconductor under the application of an external voltage is
an active area of research, especially due to various possible technological
applications. In particular, field-effect transistors and radiation detectors
have been develop... | 2105.08322v4 |
2021-05-24 | A new ideality factor for perovskite solar cells and an analytical theory for their impedance spectroscopy response | Impedance spectroscopy (IS) is a relatively straightforward experimental
technique that is commonly used to obtain information about the physical and
chemical characteristics of photovoltaic devices. However, the non-standard
physical behaviour of perovskite solar cells (PSC), which are heavily
influenced by the motion... | 2105.11226v1 |
2021-05-27 | Van der Waals interaction affects wrinkle formation in two-dimensional materials | Nonlinear mechanics of solids is an exciting field that encompasses both
beautiful mathematics, such as the emergence of instabilities and the formation
of complex patterns, as well as multiple applications. Two-dimensional crystals
and van der Waals (vdW) heterostructures allow revisiting this field on the
atomic leve... | 2105.13229v1 |
2021-08-04 | System Modelling of Very Low Earth Orbit Satellites for Earth Observation | The operation of satellites in very low Earth orbit (VLEO) has been linked to
a variety of benefits to both the spacecraft platform and mission design.
Critically, for Earth observation (EO) missions a reduction in altitude can
enable smaller and less powerful payloads to achieve the same performance as
larger instrume... | 2108.01945v2 |
2021-09-10 | One-Dimensional Luttinger Liquids in a Two-Dimensional Moiré Lattice | The Luttinger liquid (LL) model of one-dimensional (1D) electronic systems
provides a powerful tool for understanding strongly correlated physics
including phenomena such as spin-charge separation. Substantial theoretical
efforts have attempted to extend the LL phenomenology to two dimensions (2D),
especially in models... | 2109.04637v3 |
2021-09-16 | MEAM parameterization for cyclic and tensile deformations of Gold-Silver core-shell systems | Gold-Silver (Au-Ag) core-shell nanostructures are gaining importance in
stretchable electronics where high tensile and fatigue resistance is of
paramount importance. This work proposes the parameterization of a modified
embedded atomic model (MEAM) interatomic potential through density functional
theory (DFT) calculati... | 2109.08196v2 |
2021-10-08 | Synthesis and study of ScN thin films | To contemplate an alternative approach for the minimization of diffusion at
high temperature depositions, present findings impart viability of
room-temperature deposited reactively sputtered ScN thin film samples. The
adopted room temperature route endows precise control over the $R_{N_2}$ flow
for a methodical structu... | 2110.04008v1 |
2021-12-28 | Highly sensitive fire alarm system based on cellulose paper with low temperature response and wireless signal conversion | Highly sensitive smart sensors for early fire detection with remote warning
capabilities are urgently required to improve the fire safety of combustible
materials in diverse applications. The highly-sensitive fire alarm can detect
fire situation within a short time quickly when a fire disaster is about to
occur, which ... | 2201.05442v1 |
2022-10-24 | Anomalous Hall effect and two-dimensional Fermi surfaces in the charge-density-wave state of kagome metal RbV$_3$Sb$_5$ | AV$_3$Sb$_5$ (A=Cs, K, Rb) are recently discovered superconducting systems
($T_{\rm c}\sim0.9-2.5$ K) in which the vanadium atoms adopt the kagome
structure. Intriguingly, these systems enter a charge-density-wave (CDW) phase
($T_{\rm CDW}\sim80-100$ K), and further evidence shows that the time-reversal
symmetry is bro... | 2210.13250v2 |
2022-11-17 | An effective anisotropic visco-plastic model dedicated to high contrast ductile laminated microstructures: Application to lath martensite substructure | In particular types of layer- or lamellar-like microstructures such as
pearlite and lath martensite, plastic slip occurs favorably in directions
parallel to inter-lamellar boundaries. This may be due to the interplay between
morphology and crystallographic orientation or, more generally, due to
constraints imposed on t... | 2211.09754v1 |
2022-11-19 | Density-tuned effective metal-insulator transitions in 2D semiconductor layers: Anderson localization or Wigner crystallization | Electrons (or holes) confined in 2D semiconductor layers have served as model
systems for studying disorder and interaction effects for almost 50 years. In
particular, strong disorder drives the metallic 2D carriers into a strongly
localized Anderson insulator (AI) at low densities whereas pristine 2D
electrons in the ... | 2211.10673v2 |
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