publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2018-06-26 | Ultrahigh Magnetic Fields Produced by Shearing Carbon Nanotubes | In laboratories, ultrahigh magnetic fields are usually produced with very
large currents through superconducting, resistive or hybrid magnets, which
require extreme conditions, such as low temperature, huge cooling water or tens
of megawatts of power. In this work we report that when single walled carbon
nanotubes (SWN... | 1806.09891v1 |
2018-06-27 | Slip Detection: Analysis and Calibration of Univariate Tactile Signals | The existence of tactile afferents sensitive to slip-related mechanical
transients in the human hand augments the robustness of grasping through
secondary force modulation protocols. Despite this knowledge and the fact that
tactile-based slip detection has been researched for decades, robust slip
detection is still not... | 1806.10451v1 |
2018-06-27 | Electron-hole tunneling revealed by quantum oscillations in the nodal-line semimetal HfSiS | We report a study of quantum oscillations in the high-field
magneto-resistance of the nodal-line semimetal HfSiS. In the presence of a
magnetic field up to 31 T parallel to the c-axis, we observe quantum
oscillations originating both from orbits of individual electron and hole
pockets, and from magnetic breakdown betwe... | 1806.10592v1 |
2018-06-28 | Bloch surface waves at the telecommunication wavelength with Lithium Niobate as top layer for integrated optics | Lithium niobate (LN) based devices are widely used in integrated and
nonlinear optics. This material is robust and resistive to high temperatures,
which makes the LN-based devices table, but challenging to fabricate. In this
work we report on the design, manufacturing and characterization of engineered
dielectric media... | 1806.11142v1 |
2018-11-06 | Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers | We have developed low-dispersion (1480 l/mm), resonance-free, diffraction
gratings made of dielectric materials resistant to femtosecond laser damage
$(SiO_{2}/HfO_{2})$. A 14 cm diameter sample was fabricated resulting in a mean
diffraction efficiency of 99.1% at {\lambda} = 810 nm with 0.4% uniformity
using equipment... | 1811.03091v1 |
2018-11-13 | Fermi- to non-Fermi-liquid crossover and Kondo transition in two-dimensional Cu$_{2/3}$V$_{1/3}$V$_2$S$_4$ | By means of a specific heat ($C$) and electrical resistivity ($\varrho$)
study, we give evidence of a pronounced Fermi liquid (FL) behavior with sizable
mass renormalization, $m^{\ast}/m = 30$, up to unusually high temperatures
$\sim$70 K in the layered system Cu$_{2/3}$V$_{1/3}$V$_2$S$_4$. At low
temperature, a marked... | 1811.05431v1 |
2019-05-09 | A lower bound to the thermal diffusivity of insulators | It has been known for decades that thermal conductivity of insulating
crystals becomes proportional to the inverse of temperature when the latter is
comparable to or higher than the Debye temperature. This behavior has been
understood as resulting from Umklapp scattering among phonons. We put under
scrutiny the magnitu... | 1905.03551v3 |
2019-05-19 | Unraveling the Effect of Electron-Electron Interaction on Electronic Transport in High-Mobility Stannate Films | Contrary to the common belief that electron-electron interaction (EEI) should
be negligible in s-orbital-based conductors, we demonstrated that the EEI
effect could play a significant role on electronic transport leading to the
misinterpretation of the Hall data. We show that the EEI effect is primarily
responsible for... | 1905.07810v1 |
2019-05-30 | Molecular Beam Epitaxy Growth of Antiferromagnetic Kagome Metal FeSn | FeSn is a room-temperature antiferromagnet expected to host Dirac fermions in
its electronic structure. The interplay of magnetic degree of freedom and the
Dirac fermions makes FeSn an attractive platform for spintronics and electronic
devices. While stabilization of thin film FeSn is needed for the development of
such... | 1905.13073v1 |
2019-09-20 | Pressure-tunable large anomalous Hall effect of the ferromagnetic kagome-lattice Weyl semimetal Co3Sn2S2 | We investigate the pressure evolution of the anomalous Hall effect in
magnetic topological semimetal Co3Sn2S2 in diamond anvil cells with pressures
up to 44.9-50.9 GPa. No evident trace of structural phase transition is
detected through synchrotron x-ray diffraction over the measured pressure range
of 0.2-50.9 GPa. We ... | 1909.09382v1 |
2019-09-22 | Robust pseudogap across the magnetic field driven superconductor to insulator-like transition in strongly disordered NbN films | We investigate the magnetic field evolution of the superconducting state in a
strongly disordered NbN thin film which exhibits a magnetic field tuned
superconductor to insulator-like transition, employing low temperature scanning
tunneling spectroscopy (STS). Transport measurements of the sample reveals a
characteristi... | 1909.10071v1 |
2020-03-04 | High-Performance Atomically-Thin Room-Temperature NO2 Sensor | The development of room-temperature sensing devices for detecting small
concentrations of molecular species is imperative for a wide range of low-power
sensor applications. We demonstrate a room-temperature, highly sensitive,
selective, and reversible chemical sensor based on a monolayer of the
transition metal dichalc... | 2003.01909v2 |
2020-03-17 | Measurement of the heat flux normalised spin Seebeck coefficient of thin films as a function of temperature | The spin Seebeck effect (SSE) has generated interest in the thermoelectric
and magnetic communities for potential high efficiency energy harvesting
applications, and spintronic communities as a source of pure spin current. To
understand the underlying mechanisms requires characterisation of potential
materials across a... | 2003.07925v1 |
2020-03-25 | Dualism of the 4f electrons and high-temperature antiferromagnetism of the heavy-fermion compound YbCoC$_{2}$ | We report on the first study of the noncentrosymmetric ternary carbide
YbCoC$_{2}$. Our magnetization, specific heat, resistivity and neutron
diffraction measurements consistently show that the system behaves as a
heavy-fermion compound, displaying an amplitude-modulated magnetic structure
below the N\'eel temperature ... | 2003.11601v1 |
2014-08-13 | Crossover from charge order to strain glass in phase separated manganite thin films: Impact of thermal cycling and substrate induced strain | The magnetic and magnetotransport properties of single crystalline
La1-x-yPryCaxMnO3 (x=0.42, y=0.40) thin films (~140 nm) deposited on (110)
oriented LaAlO3 and SrTiO3 substrates exhibit a crossover from the high
temperature antiferromagnetic-charge ordered insulator (AFM-COI) phase (T>TN)
to strain glass (T<Tg). At i... | 1408.2966v1 |
2014-08-14 | Anomalous diffusion and Griffiths effects near the many-body localization transition | We explore the high-temperature dynamics of the disordered, one-dimensional
XXZ model near the many-body localization (MBL) transition, focusing on the
delocalized (i.e., "metallic") phase. In the vicinity of the transition, we
find that this phase has the following properties: (i) Local magnetization
fluctuations rela... | 1408.3413v2 |
2014-08-19 | Bipolar switching in an orthogonal spin transfer spin valve device | We demonstrate current-induced bipolar switching in in-plane magnetized
spin-valve devices that incorporate a perpendicularly magnetized spin
polarizing layer. Further, hysteretic transitions into a state with
intermediate resistance occur at high currents, again for both current
polarities. These transitions are shown... | 1408.4494v1 |
2017-01-19 | Comparative study of LaNiO$_3$/LaAlO$_3$ heterostructures grown by pulsed laser deposition and oxide molecular beam epitaxy | Variations in growth conditions associated with different deposition
techniques can greatly affect the phase stability and defect structure of
complex oxide heterostructures. We synthesized superlattices of the
paramagnetic metal LaNiO3 and the large band gap insulator LaAlO3 by atomic
layer-by-layer molecular beam epi... | 1701.05366v1 |
2017-01-23 | Sonication-assisted synthesis of semiconducting atomic crystals of germanium monoselenide: An isostructural and isoelectronic analog of black phosphorous | Monochalcogenides of germanium (or tin) are considered as stable
isoelectronic and isostructural analogue of black phosphorous. Their
two-dimensional (2D) forms have been just predicted to shown strong
thickness-dependent physical properties, and even indirect to direct band gap
crossover at the monolayer limit. Here, ... | 1701.06285v2 |
2017-03-18 | Analytical expressions for thermophysical properties of solid and liquid tungsten relevant for fusion applications | The status of the literature is reviewed for several thermophysical
properties of pure solid and liquid tungsten which constitute input for the
modelling of intense plasma-surface interaction phenomena that are important
for fusion applications. Reliable experimental data are analyzed for the latent
heat of fusion, the... | 1703.06302v4 |
2017-03-28 | Thermoelectric La-doped SrTiO3 epitaxial layers with single-crystal quality: from nanometer to micrometer and mosaicity effects | High-quality thermoelectric LaxSr1-xTiO3 (LSTO) layers (here with x = 0.2),
with thicknesses ranging from 20 nm to 700 nm, have been epitaxially grown on
SrTiO3(001) substrates by enhanced solid-source oxide molecular-beam epitaxy.
All films are atomically flat (with rms roughness < 0.2 nm), with low mosaicity
(<0.1{\d... | 1703.09451v1 |
2018-10-01 | Evolution of magnetic properties in the vicinity of the Verwey transition in Fe3O4 thin films | We have systematically studied the evolution of magnetic properties,
especially the coercivity and the remanence ratio in the vicinity of the Verwey
transition temperature (TV ), of high-quality epitaxial Fe3O4 thin films grown
on MgO (001), MgAl2O4 (MAO) (001), and SrTiO3 (STO) (001) substrates. We
observed rapid chan... | 1810.00538v1 |
2018-10-16 | Effect of Graded Bias Voltage on the Microstructure of arc-PVD CrN Films and its Response in Electrochemical & Mechanical Behavior | The effect of graded or constant bias voltages (-40 V, -80 V and -40/60/80 V)
on size grain and surface defects of arc PVD deposited CrN films was
investigated. Corrosion resistance evaluated using electrochemical impedance
spectroscopy (EIS) and potentiodynamic curves (Tafel) and the mechanical
behavior evaluated by m... | 1810.07293v1 |
2018-10-30 | Theory of the Strange Metal Sr$_3$Ru$_2$O$_7$ | The bilayer perovskite Sr$_3$Ru$_2$O$_7$ has been widely studied as a
canonical strange metal. It exhibits $T$-linear resistivity and a $T\log(1/T)$
electronic specific heat in a field-tuned quantum critical fan. Criticality is
known to occur in `hot' Fermi pockets with a high density of states close to
the Fermi energ... | 1810.12945v2 |
2019-02-08 | Magnetic tunnel junctions based on ferroelectric Hf0.5Zr0.5O2 tunnel barriers | A ferroelectric tunnel barrier in between two ferromagnetic electrodes
(multiferroic tunnel junction, MFTJ), is one of the most promising concepts for
future microelectronic devices. In parallel, Hafnia based ferroelectrics are
showing great potential for device miniaturization down to the nanoscale. Here
we utilize fe... | 1902.08021v1 |
2019-02-27 | Tunable light-emission through the range 1.8-3.2 eV and p-type conductivity at room temperature for nitride semiconductors, Ca(Mg1-xZnx)2N2 (x=0-1) | The ternary nitride CaZn2N2, composed only of earth-abundant elements, is a
novel semiconductor with a band gap of 1.8 eV. First-principles calculations
predict that continuous Mg substitution at the Zn site will change the optical
band gap in a wide range from ~3.3 eV to ~1.9 eV for Ca(Mg1-xZnx)2N2 (x = 0-1).
In this ... | 1902.10495v1 |
2019-07-09 | Modulation of crystal and electronic structures in topological insulators by rare-earth doping | We study magnetotransport in a rare earth doped topological insulator,
Sm0.1Sb1.9Te3 single crystals, under magnetic fields up to 14 T. It is found
that that the crystals exhibit Shubnikov de Haas oscillations in their
magneto-transport behaviour at low temperatures and high magnetic fields. The
SdH oscillations result... | 1907.03930v2 |
2019-07-22 | Development and characterization of six-gap glass MRPCs and feasibility study of a PET device | The Multigap Resistive Plate Chambers (MRPCs) provide excellent timing as
well as position resolutions at relatively low cost. Therefore, they can be
used in medical imaging applications such as PET where precise timing is a
crucial parameter of measurement. We have designed and fabricated several
six-gap glass MRPCs a... | 1907.09379v1 |
2020-02-24 | Miniature capacitive Faraday force magnetometer for magnetization measurements at low temperatures and high magnetic fields | A Faraday force magnetometer is presented for measurements of magnetization
at temperatures down to 100~mK and in magnetic fields up to 14~T. The specimen
is mounted on a flexible cantilever forming a force-sensing capacitor in
combination with a fixed back plate. Two different cantilever designs are
presented. A torsi... | 2002.10168v1 |
2020-02-24 | Silicon Vertex & Tracking Detectors for the Compact Linear Collider | CLIC is a proposed linear $e^+e^-$ collider with center-of-mass energies of
up to 3 TeV. Its main objectives are precise top quark, Higgs boson and Beyond
Standard Model physics. In addition to spatial resolutions of a few micrometers
and a very low material budget, the vertex and tracking detectors also require
timing... | 2002.10169v1 |
2020-02-27 | Non-trivial quantum magnetotransport oscillations in pure and robust topological $α$-Sn films | We report experimental evidence of topological Dirac fermion charge carriers
in pure and robust $\alpha$-Sn films grown on InSb substrates. This evidence
was acquired using standard macroscopic four-point contact resistance
measurements, conducted on uncapped films with a significantly reduced bulk
mobility. We analyze... | 2002.12248v2 |
2020-04-20 | Structural and transport properties of La$_{1-x}$Sr$_x$Co$_{1-y}$Nb$_y$O$_3$ thin films | We present the structural and transport properties of
La$_{1-x}$Sr$_x$Co$_{1-y}$Nb$_y$O$_3$ ($y=$ 0.1 and $x=$ 0; $y=$ 0.15 and $x=$
0.3) thin films grown on (001) orientated single crystalline ceramic substrates
to investigate the effect of lattice induced compressive and tensile strain.
The high resolution x-ray diff... | 2004.09162v1 |
2020-04-29 | Raman spectroscopy of ion irradiated SiC: chemical defects, strain, annealing, and oxidation | Raman spectroscopy has been used to identify defective bonding in neon and
silicon ion irradiated single crystals of 6H-SiC. Observable differences exist
in the C-C bonding region corresponding to different defect structures for neon
and silicon ion implantations. Raman spectra of ion irradiated SiC show less
tensile s... | 2004.14335v3 |
2020-09-01 | Molecular beam epitaxy of the half-Heusler antiferromagnet CuMnSb | We report growth of CuMnSb thin films by molecular beam epitaxy on InAs(001)
substrates. The CuMnSb layers are compressively strained ($0.6~\text{%}$) due
to lattice mismatch. The thin films have a $\omega$ full width half max of
$7.7^{''}$ according to high resolution X-ray diffraction, and a root mean
square roughnes... | 2009.00342v1 |
2020-09-24 | Magneto-transport properties of tellurium under extreme conditions | This study investigates the transport properties of a chiral elemental
semiconductor tellurium (Te) under magnetic fields and pressure. Application of
hydrostatic pressure reduces the resistivity of Te, while its temperature
dependence remains semiconducting up to 4 GPa, contrary to recent theoretical
and experimental ... | 2009.11511v1 |
2022-02-01 | Prominent electron-hole asymmetry in thermoelectric transport of LaCoO$_3$ | We have measured the electrical resistivity and the thermopower of the
electron-doped perovskite cobaltites LaCo$_{1-y}$Te$_y$O$_3$. In contrast to
the hole-doped systems such as metallic ferromagnets La$_{1-x}M_x$CoO$_3$ ($M$
= Ca, Sr, Ba), the electron-doped samples show an insulating behavior even in a
heavily doped... | 2202.00166v1 |
2022-02-11 | Temperature control of diffusive memristor hysteresis and artificial neuron spiking | Memristive devices are promising elements for energy-efficient neuromorphic
computing and future artificial intelligence systems. For diffusive memristors,
the device state switching occurs because of the sequential formation and
disappearance of conduction pillars between device terminals due to the drift
and diffusio... | 2202.05571v1 |
2007-10-07 | Mapping the Spatial Distribution of Charge Carriers in LaAlO3/SrTiO3 Heterostructures | At the interface between complex insulating oxides, novel phases with
interesting properties may occur, such as the metallic state reported in the
LaAlO3/SrTiO3 system. While this state has been predicted and reported to be
confined at the interface, some works indicate a much broader spatial
extension, thereby questio... | 0710.1395v2 |
2014-01-05 | Electron-hole pairing in graphene-GaAs heterostructures | Vertical heterostructures combining different layered materials offer novel
opportunities for applications and fundamental studies of collective behavior
driven by inter-layer Coulomb coupling. Here we report heterostructures
comprising a single-layer (or bilayer) graphene carrying a fluid of massless
(massive) chiral ... | 1401.0902v1 |
2017-04-17 | Mesoscopic quantum effects in a bad metal, hydrogen-doped vanadium dioxide | The standard treatment of quantum corrections to semiclassical electronic
conduction assumes that charge carriers propagate many wavelengths between
scattering events, and succeeds in explaining multiple phenomena (weak
localization magnetoresistance (WLMR), universal conductance fluctuations,
Aharonov-Bohm oscillation... | 1704.05080v1 |
2017-04-19 | Epitaxy and Structural Properties of (V,Bi,Sb)$_2$Te$_3$ Layers Exhibiting the Quantum Anomalous Hall Effect | The influence of Sb content, substrate type and cap layers on the quantum
anomalous Hall effect observed in V-doped (Bi,Sb)$_2$Te$_3$ magnetic
topological insulators is investigated. Thin layers showing excellent
quantization are reproducibly deposited by molecular beam epitaxy at growth
conditions effecting a compromi... | 1704.05677v2 |
2017-04-24 | Electronic properties and the nature of metal-insulator transition in NdNiO3 prepared at ambient oxygen pressure | We report the electronic properties of the NdNiO3, prepared at the ambient
oxygen pressure condition. The metal-insulator transition temperature is
observed at 192 K, but the low temperature state is found to be less insulating
compared to the NdNiO3 prepared at high oxygen pressure. The electric
resistivity, Seebeck c... | 1704.07143v1 |
2017-05-15 | The role of the coherence length for the establishment of global phase coherence in three-dimensional arrays of ultra-thin quasi-one-dimensional superconducting Pb and NbN nanowires | We have fabricated 5 nm ultra-thin NbN nanowires that form a dense and
regular array in the linear channels of mesoporous SBA-15 silica substrates.
Bulk NbN is a well-known classical superconductor with Tc of 16 K. We show
that, by being incorporated into this nanostructure, the composite material
exhibits typical quas... | 1705.05097v1 |
2017-05-30 | High-pressure structural, elastic, and thermodynamic properties of zircon-type HoPO4 and TmPO4 | Zircon-type HoPO4 and TmPO4 have been studied by single-crystal x-ray
diffraction and ab initio calculations. We report information on the influence
of pressure on the crystal structure, and on the elastic and thermodynamic
properties. The equation of state for both compounds is accurately determined.
We have also obta... | 1705.10721v1 |
2017-07-06 | RF-quantum capacitance of the topological insulator Bi2Se3 in the bulk depleted regime for field-effect transistors | A Metal-dielectric-topological insulator capacitor device based on
hBN-encapsulated CVD grown Bi2Se3 is realized and investigated in the radio
frequency regime. The RF quantum capacitance and device resistance are
extracted for frequencies as a high as 10 GHz, and studied as a function of the
applied gate voltage. The ... | 1707.01657v2 |
2017-07-29 | Experimental study of extrinsic spin Hall effect in CuPt alloy | We have experimentally studied the effects on the spin Hall angle due to
systematic addition of Pt into the light metal Cu. We perform spin torque
ferromagnetic resonance measurements on Py/CuPt bilayer and find that as the Pt
concentration increases, the spin Hall angle of CuPt alloy increases. Moreover,
only 28% Pt i... | 1707.09525v1 |
2017-08-17 | Enhanced superconductivity and anisotropy of FeTe0.6Se0.4 single crystals with Li-NH3 intercalation | We report a systematic study of anisotropy resistivity, magnetoresistance and
Hall effect of Li0.32(NH3)yFe2Te1.2Se0.8 single crystals. When compared to the
parent compound FeTe0.6Se0.4, the Li-NH3 intercalation not only increases the
superconducting transition temperature, but also enhances the electronic
anisotropy i... | 1708.05310v2 |
2017-08-30 | Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities | We present measurements of the Spin Hall Effect (SHE) in AuW and AuTa alloys
for a large range of W or Ta concentrations by combining experiments on lateral
spin valves and Ferromagnetic-Resonance/spin pumping technique. The main result
is the identification of a large enhancement of the Spin Hall Angle (SHA) by
the si... | 1708.09214v1 |
2018-08-17 | Magnetic and structural properties of Co$_2$MnSi based Heusler compound | The influence of antisite disorder occupancies on the magnetic properties of
the half-metallic Co$_2$MnSi compound was studied by experimental techniques
and first-principles calculations. The neutron diffraction studies show almost
identical amount of Mn and Co disorders of 6.5\% and 7.6\%, which was found to
be in go... | 1808.05743v3 |
2018-08-21 | Superconductivity at 215 K in lanthanum hydride at high pressures | We synthesized lanthanum hydride (LaHx) by laser heating of lanthanum in
hydrogen atmosphere at pressure P = 170 GPa. The sample shows a superconducting
step at 209 K and 170 GPa and temperature dependence of resistance. By
releasing the pressure to 150 GPa, the superconducting transition temperature
Tc increases to 21... | 1808.07039v1 |
2019-03-25 | Simulations of CMOS pixel sensors with a small collection electrode, improved for a faster charge collection and increased radiation tolerance | CMOS pixel sensors with a small collection electrode combine the advantages
of a small sensor capacitance with the advantages of a fully monolithic design.
The small sensor capacitance results in a large ratio of signal-to-noise and a
low analogue power consumption, while the monolithic design reduces the
material budg... | 1903.10190v2 |
2019-03-28 | PtSe2 grown directly on polymer foil for use as a robust piezoresistive sensor | Robust strain gauges are fabricated by growing PtSe2 layers directly on top
of flexible polyimide foils. These PtSe2 layers are grown by low-temperature,
thermally-assisted conversion of predeposited Pt layers. Under applied flexure
the PtSe2 layers show a decrease in electrical resistance signifying a negative
gauge f... | 1903.11894v1 |
2019-08-09 | Doping-dependent competition between superconductivity and polycrystalline charge density waves | From systematic analysis of the high pulsed magnetic field resistance data of
La$_{2-x}$Sr$_x$CuO$_{4}$ thin films, we extract an experimental phase diagram
for several doping values ranging from the very underdoped to the very
overdoped regimes. Our analysis highlights a competition between charge density
waves and su... | 1908.03408v3 |
2019-08-12 | Exchange Bias and Quantum Anomalous Hall Effect in the MnBi2Te4-CrI3 Heterostructure | The layered antiferromagnetic MnBi2Te4 films have been proposed to be an
intrinsic quantum anomalous Hall (QAH) insulator with a large gap. To realize
this proposal, it is crucial to open a magnetic gap of surface states. However,
recent experiments have observed gapless surface states, indicating the absence
of out-of... | 1908.04322v2 |
2019-08-13 | Evolution of structure and magnetism across the metal-insulator transition in the pyrochlore iridate $($Nd$_{1-x}$Ca$_x)_2$Ir$_2$O$_7$ | We report on the evolution of the thermal metal-insulator transition in
polycrystalline samples of Nd$_2$Ir$_2$O$_7$ upon hole-doping via substitution
of Ca$^{2+}$ for Nd$^{3+}$. Ca substitution mediates a filling-controlled
Mott-like transition with minimal resolvable structural changes and without
altering site symme... | 1908.04874v1 |
2019-12-11 | Non-quadratic transverse magnetoresistance of the nodal line Dirac semimetal InBi | The transverse magnetoresistance of a nodal line Dirac semi-metal InBi has
been studied. It is found that the magnetoresistance is not quadratic. In the
region of small magnetic fields $ B\lesssim 0.1$~T, it is characterized by high
curvature, in the region of medium magnetic fields it is described by the sum
of linear... | 1912.05321v1 |
2021-01-14 | Superconducting critical temperature in the extended diffusive SYK model | Models for strongly interacting fermions in disordered clusters forming an
array, with electron hopping between sites, reproduce the linear dependence on
temperature of the resistivity, typical of the strange metal phase of High
Temperature Superconducting materials (Extended Sachdev-Ye-Kitaev (SYK)
models). Our hydrod... | 2101.05627v4 |
2021-01-22 | A Robust Coherent Single-Photon Interface for Moderate- NA Optics Based on SiV Center in Nanodiamonds and a Plasmonic Bullseye Antenna | Coherent exchange of single photons is at the heart of applied Quantum
Optics. The negatively-charged silicon vacancy center in diamond is among most
promising sources for coherent single photons. Its large Debye-Waller factor,
short lifetime and extraordinary spectral stability is unique in the field of
solid-state si... | 2101.09223v2 |
2011-04-06 | Improved tunneling magnetoresistance at low temperature in manganite junctions grown by molecular beam epitaxy | We report resistance versus magnetic field measurements for a
La0.65Sr0.35MnO3/SrTiO3/La0.65Sr0.35MnO3 tunnel junction grown by
molecular-beam epitaxy, that show a large field window of extremely high
tunneling magnetoresistance (TMR) at low temperature. Scanning the in-plane
applied field orientation through 360^/circ... | 1104.1072v1 |
2011-04-07 | Electrostatic Control of the Evolution from Superconductor to Insulator in Ultrathin Films of Yttrium Barium Copper Oxide | The electrical transport properties of ultrathin YBCO films have been
modified using an electric double layer transistor configuration employing an
ionic liquid. The films were grown on SrTiO3 substrates using high pressure
oxygen sputtering. A clear evolution from superconductor to insulator was
observed in nominally ... | 1104.1357v1 |
2011-04-07 | Interference effects in phtalocyanine controlled by H-H tautomerization: a potential two-terminal unimolecular electronic switch | We investigate the electrical transport properties of two hydrogen tautomer
configurations of phthalocyanine (H2Pc) connected to cumulene and gold leads.
Hydrogen tautomerization affects the electronic state of H2Pc by switching the
character of molecular orbitals with the same symmetry close to the Fermi
level. The ne... | 1104.1441v2 |
2012-03-07 | Hall helps Ohm: some corrections to negative-U centers approach to transport properties of YBa$_2$Cu$_3$O$_x$ and La$_{2-x}$Sr$_x$CuO$_4$ | For broad oxygen and strontium doping ranges, temperature dependences
(T-dependences) of the normal state resistivity \rho(T) of YBa_2Cu_3O_x (YBCO)
and La_(2-x)Sr_xCuO_4 (LSCO) are calculated and compared to experiments. Holes
transport was taken in the \tau-approximation, where \tau(T,\epsilon) is due to
acoustic pho... | 1203.1579v1 |
2012-03-29 | Fermi level tuning and a large activation gap achieved in the topological insulator Bi_{2}Te_{2}Se by Sn doping | We report the effect of Sn doping on the transport properties of the
topological insulator Bi_{2}Te_{2}Se studied in a series of
Bi_{2-x}Sn_{x}Te_{2}Se crystals with 0 \leq x \leq 0.02. The undoped
stoichiometric compound (x = 0) shows an n-type metallic behavior with its
Fermi level pinned to the conduction band. In t... | 1203.6411v1 |
2015-04-14 | Pressure Induced Enhancement of Superconductivity in LaRu2P2 | To explore new superconductors beyond the copper-based and iron-based systems
is very important. The Ru element locates just below the Fe in the periodic
table and behaves like the Fe in many ways. One of the common thread to induce
high temperature superconductivity is to introduce moderate correlation into
the system... | 1504.03652v1 |
2015-04-16 | Electron mobility in InxGa1-xN channel HEMTs | In this letter, we report on the theoretical investigations of electron
mobility in practically viable designs of InxGa1-xN channel high electron
mobility transistors (HEMT). Carriers in such devices are expected to exhibit a
higher velocity and hence higher cut-off frequencies (fT) for highly scaled
architectures. We ... | 1504.04336v1 |
2015-06-01 | Topological stability versus thermal agitation in a metastable magnetic skyrmion lattice | Topologically stable matters can have a long lifetime, even if
thermodynamically costly, when the thermal agitation is sufficiently low. A
magnetic skyrmion lattice (SkL) represents a unique form of long-range magnetic
order that is topologically stable, and therefore, a long-lived, metastable SkL
can form. Experimenta... | 1506.00363v2 |
2015-07-02 | Wavelength tuning and stabilization of microring-based filters using silicon in-resonator photoconductive heaters | We demonstrate that n-doped resistive heaters in silicon waveguides show
photoconductive effects with high responsivities. These photoconductive
heaters, integrated into microring resonator (MRR)-based filters, were used to
automatically tune and stabilize the filter's resonance wavelength to the input
laser's waveleng... | 1507.00686v2 |
2015-07-18 | Addressing the Challenges of Using Ferromagnetic Electrodes in the Molecular Spintronics Devices | Ferromagnetic electrodes chemically bonded with thiol functionalized
molecules can produce novel molecular spintronics devices. However, major
challenges lie in developing Ferromagnetic electrodes based commercially viable
device fabrication scheme that consider the susceptibility of ferromagnetic
electrodes to oxidati... | 1507.05146v1 |
2015-07-26 | Topological Phase Transition in Single Crystals of $(Cd_{1-x} Zn_x)_3 As_2$ | Single crystals of $(Cd_{1-x} Zn_x)_3 As_2$ were synthesized from
high-temperature solutions and characterized in terms of their structural and
electrical properties. Based on the measurements of resistivity and Hall
signals, we revealed a chemical-doping-controlled transition from a three
dimensional Dirac semimetal t... | 1507.07169v1 |
2016-09-08 | Collective Dynamics and Strong Pinning near the Onset of Charge Order in La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_{4}$ | The dynamics of charge-ordered states is one of the key issues in underdoped
cuprate high-temperature superconductors, but static short-range charge-order
(CO) domains have been detected in almost all cuprates. We probe the dynamics
across the CO (and structural) transition in
La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_{4}$ ... | 1609.02591v3 |
2016-09-21 | Change-over of carrier type and magneto-transport property in Cu doped Bi2Te3 Topological Insulators | Structural, resistivity, thermoelectric power and magneto-transport
properties of Cu doped Bi2Te3 topological insulators have been investigated.
The occurrence of the tuning of charge carriers from n type to p type by Cu
doping at Te sites of Bi2Te3 is observed both from Hall effect and
thermoelectric power measurement... | 1609.06542v1 |
2016-09-26 | Anisotropic heat conduction in silicon nanowire network revealed by Raman scattering | Anisotropic nanomaterials possess interesting thermal transport properties
because they allow orientation of heat fluxes along preferential directions due
to a high ratio (up to three orders of magnitude) between their in-plane and
cross-plane thermal conductivities. Among different techniques allowing thermal
conducti... | 1609.08133v3 |
2016-09-27 | Lifshitz Transitions in the Ferromagnetic Superconductor UCoGe | We present high field magnetoresistance, Hall effect and thermopower
measurements in the Ising-type ferromagnetic superconductor UCoGe. Magnetic
field is applied along the easy magnetization $c$ axis of the orthorhombic
crystal. In the different experimental probes we observed five successive
anomalies at $H \approx 4$... | 1609.08466v1 |
2018-07-07 | Oxygen Potential Transition in Mixed Conducting Oxide Electrolyte | It is generally assumed that oxygen potential in a thin oxide electrolyte
follows a linear distribution between electrodes. Jacobsen and Mogensen have
shown, however, that this is not the case for thin zirconia membranes in solid
oxide electrochemical cells. Here we demonstrate that there is a ubiquitous
oxygen potenti... | 1807.02704v1 |
2018-07-31 | Visible absorbing TiO2 thin films by physical deposition methods | Titanium dioxide is one of the most widely used wide bandgap materials.
However, the TiO2 deposited on a substrate is not always transparent leading to
a loss in efficiency of the device, especially, the photo response. Herein, we
show that atomic layer deposition (ALD) and sputtered TiO2 thin films can be
highly absor... | 1807.11748v1 |
2018-12-03 | Anomalous scalings of the cuprate strange metals from nonlinear electrodynamics | We examine transport in a holographic model which describes, through a
nonlinear gauge field sector, generic nonlinear interactions between the charge
carriers. Scaling exponents are introduced by using geometries which are
nonrelativistic and hyperscaling-violating in the infrared. In the dilute
charge limit in which ... | 1812.01040v2 |
2018-12-17 | PNADIS: An automated Peierls-Nabarro Analyzer for DISlocation core structure and slip resistance | Dislocation is one of the most critical and fundamental crystal defects that
dominate the mechanical behavior of crystalline solids, however, a quantitative
determination of its character and property in experiments is quite challenging
and limited so far. In this paper, a fully automated Peierls-Nabarro (P-N)
analyzer... | 1812.06630v1 |
2019-01-23 | Stacking of nanocrystalline graphene for Nano-Electro-Mechanical (NEM) actuator applications | Graphene nano-electro-mechanical switches are promising components due to
their excellent switching performance such as low pull-in voltage and low
contact resistance. Mass fabrication with an appropriate counter electrode
remains challenging. In this work, we report the stacking of nanocrystalline
graphene (NCG) with ... | 1901.07754v1 |
2019-06-10 | Successive Symmetry Breaking in a Jeff = 3/2 Quartet in the Spin-Orbit Coupled Insulator Ba2MgReO6 | We report on the cubic double perovskite Ba2MgReO6 containing Re6+ ions with
the 5d1 electron configuration. Resistivity, magnetization, and heat capacity
measurements using single crystals show that the compound is a Mott insulator
with a magnetic transition at Tm = 18 K, which is accompanied by a weak
ferromagnetic m... | 1906.03802v1 |
2019-10-07 | Ultrasound homogenises suspensions of hydrophobic particles | Hydrophobic particles inherently resist being suspended. Hydrophobic
particles might be regarded as tiny solid particles surrounded by a thin
gaseous shell. It has been hypothesised that hydrophobic particles act as
cavitation nuclei. This cavitation behaviour would explain the translation
speeds observed when hydropho... | 1910.02714v2 |
2019-10-19 | Wafer-size VO2 film prepared by water-vapor oxidant | The growth of wafer-scale and uniform monoclinic VO2 film was a challenge if
considering the multivalent vanadium atom and the various phase structures of
VO2 compound. Directly oxidizing metallic vanadium film in oxygen gas seemed to
be an easy way, while the oxidation parameters were extremely sensitive due to
the cr... | 1910.08776v3 |
2019-10-28 | Hikami-Larkin-Nagaoka (HLN) Fitting of Magneto Transport of Bi2Se3 Single Crystal in Different Magnetic Field Ranges | We report the detailed study of structural micro-structuraland high magnetic
field magneto transport propertiesof Bi2Se3single crystal. Bi2Se3 single
crystal is grown through conventional solid-state reaction route via the
self-flux method. Rietveld analysis on Powder X-ray Diffraction showed that the
studied Bi2Se3 cr... | 1910.12438v1 |
2019-11-06 | Microscopic charging and in-gap states in superconducting granular aluminum | Following the emergence of superconducting granular aluminum (grAl) as a
material for high-impedance quantum circuits, future development hinges on a
microscopic understanding of its phase diagram, and whether the
superconductor-to-insulator transition (SIT) is driven by disorder or charging
effects. Beyond fundamental... | 1911.02312v2 |
2019-11-14 | GFET Asymmetric Transfer Response Analysis through Access Region Resistances | Graphene-based devices are planned to augment the functionality of Si and
III-V based technology in radio-frequency (RF) electronics. The expectations in
designing graphene {field-effect} transistors (GFETs) with enhanced RF
performance have attracted significant experimental efforts, mainly
concentrated on achieving h... | 1911.06360v1 |
2020-01-30 | Extreme Fermi surface smearing in a maximally disordered concentrated solid solution | We show that the Fermi surface can survive the presence of extreme
compositional disorder in the equiatomic alloy
Ni$_{0.25}$Fe$_{0.25}$Co$_{0.25}$Cr$_{0.25}$. Our high-resolution Compton
scattering experiments reveal a Fermi surface which is smeared across a
significant fraction of the Brillouin zone (up to 40\% of $\... | 2001.11416v1 |
2020-05-12 | Superconductivity in Hydrogenated Graphites | We report transport and magnetization measurements on graphitic materials
that have been hydrogenated after being treated with octane. The
temperature-dependent electrical resistivity shows anomalies manifested as
re-entrant insulator-metal transitions. Below 50 K, the magnetoresistance data
shows both antiferromagneti... | 2005.05876v1 |
2020-07-02 | Drone swarms in fire suppression activities | Recent huge technological development of Unmanned Aerial Vehicles (UAVs) can
provide breakthrough means of fighting wildland fires. We propose an innovative
forest firefighting system based on the use of a swarm of hundreds of UAVs able
to generate a continuous flow of extinguishing liquid on the fire front,
simulating... | 2007.00883v2 |
2020-07-29 | Energy Transfer to a Stable Donor Suppresses Degradation in Organic Solar Cells | Despite many advances towards improving the stability of organic photovoltaic
devices, environmental degradation under ambient conditions remains a
challenging obstacle for future application. Particularly conventional systems
employing fullerene derivatives are prone to oxidise under illumination,
limiting their appli... | 2007.14651v1 |
2020-10-13 | Strong anisotropy of electron-phonon interaction in NbP probed by magnetoacoustic quantum oscillations | In this study, we report on the observation of de Haas-van Alphen-type
quantum oscillations (QO) in the ultrasound velocity of NbP as well as `giant
QO' in the ultrasound attenuation in pulsed magnetic fields. The difference of
the QO amplitude for different acoustic modes reveals a strong anisotropy of
the effective d... | 2010.06530v2 |
2020-10-13 | Stacking-engineered ferroelectricity in bilayer boron nitride | 2D ferroelectrics with robust polarization down to atomic thicknesses provide
novel building blocks for functional heterostructures. Experimental reports,
however, remain scarce because of the requirement of a layered polar crystal.
Here, we demonstrate a rational design approach to engineering 2D
ferroelectrics from a... | 2010.06600v2 |
2020-10-16 | Visualizing half-metallic bulk band structure with multiple Weyl cones of the Heusler ferromagnet | Using a well-focused soft X-ray synchrotron radiation beam, angle-resolved
photoelectron spectroscopy was applied to a full-Heusler-type Co$_2$MnGe alloy
to elucidate its bulk band structure. A large parabolic band at the Brillouin
zone center and several bands that cross the Fermi level near the Brillouin
zone boundar... | 2010.08415v1 |
2020-10-27 | Superconductivity and Fermi Surface Nesting in the Candidate Dirac Semimetal NbC | We report the synthesis of single-crystal NbC, a transition metal carbide
with various unusual properties. Transport, magnetic susceptibility, and
specific heat measurements demonstrate that NbC is a conventional
superconductor with a superconducting transition temperature ($T_c$) of 11.5 K.
Our theoretical calculation... | 2010.14259v2 |
2020-11-02 | Phase field predictions of microscopic fracture and R-curve behaviour of fibre-reinforced composites | We present a computational framework to explore the effect of microstructure
and constituent properties upon the fracture toughness of fibre-reinforced
polymer composites. To capture microscopic matrix cracking and fibre-matrix
debonding, the framework couples the phase field fracture method and a cohesive
zone model i... | 2011.00779v1 |
2020-11-10 | Rebound suppression of a droplet impact on a supersolvophobic surface by a small amount of polymer additives | A small amount of polymer dissolved in a droplet suppresses droplet rebound
when it impinges on a supersolvophobic surface. This work investigates
impacting dynamics of a droplet of dilute polymer solution depending on the
molecular weight and the concentration of the polymer by using multi-body
dissipative particle dy... | 2011.05086v1 |
2020-12-03 | Optical and Hidden Transport Properties of BaFe$_{1.91}$Ni$_{0.09}$As$_{2}$ Film | Optical spectroscopy was used to study the electrodynamics and hidden
transport properties of a BaFe$_{1.91}$Ni$_{0.09}$As$_{2}$ thin superconducting
film. We analyzed the normal state data using a Drude-Lorentz model with two
Drude components: one narrow ($D_1$) and another broad one ($D_2$). In the
superconducting st... | 2012.01962v1 |
2020-12-08 | Phonon modes contribution in thermal rectification in graphene-C3B junction: A molecular dynamics study | In this work using non-equilibrium molecular dynamics simulation we implement
a series of simulation under positive and negative temperature gradient in
order to investigate the thermal rectification in the graphene C3B junction
GCB. The dependence of thermal rectification on temperature difference between
the hot and ... | 2012.04363v1 |
2021-04-14 | Lack of Fusion in Additive Manufacturing: Defect or Asset? | Rapid cooling rates and stochastic interactions between the heat source and
feedstock in additive manufacturing (AM) result in strong anisotropy and
process-induced defects deteriorating the tensile ductility and fatigue
resistance of printed parts. We show that by deliberately introducing a high
density of lack of fus... | 2104.07014v1 |
2021-04-21 | Electrically detected paramagnetic resonance in Ag-paint coated DPPH | We describe a simple experimental method to detect electron paramagnetic
resonance (EPR) in polycrystalline 2,2-diphenyl-1-picrylhydrazyl (DPPH) sample,
the standard g-marker for EPR spectroscopy, without using a cavity resonator or
a prefabricated waveguide. It is shown that microwave(MW) current injected into
a layer... | 2104.10794v1 |
2021-05-26 | Theoretical study for 3D quantum Hall effect in a periodic electron system | The exsitance of three-dimensional Hall effect (3DQHE) due to spontaneous
Fermi surface instabilities in strong magnetic field was proposed decades ago,
and has stimulated recent progress in experiments. The reports in recent
experiments show that the Hall plateaus and vanishing transverse
magneto-resistivities (TMRs) ... | 2105.12461v2 |
2021-06-09 | The extended diffusive Sachdev-Ye-Kitaev model as a sort of "strange metal" | The 0+1-d Sachdev-Ye-Kitaev (SYK) fermionic model attracts nowadays a wide
spread interest of the Condensed Matter community, as a benchmark toy model for
strong electron correlation and non Fermi Liquid behavior. It is exactly
solvable in the infrared limit and reproduces the linear dependence of the
resistivity on te... | 2106.05383v2 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.