publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2010-03-12 | Electronic phase diagram of NdFe1-xRhxAsO | We report on the electrical resistivity, thermoelectric power and electronic
phase diagram of rhodium-doped NdFeAsO. Rhodium doping suppresses the
structural phase transition and spin density wave observed in the undoped
material, and superconductivity emerges at x close to 0.05, despite the
distortion of FeAs4 tetrahe... | 1003.2528v1 |
2010-06-02 | Emergence of current branches in a series array of negative differential resistance circuit elements | We study a series array of nonlinear electrical circuit elements that possess
negative differential resistance and find that \emph{heterogeneity} in the
element properties leads to the presence of multiple branches in
current-voltage curves and a non-uniform distribution of voltages across the
elements. An inhomogeneit... | 1006.0434v1 |
2010-10-08 | On giant piezoresistance effects in silicon nanowires and microwires | The giant piezoresistance (PZR) previously reported in silicon nanowires is
experimentally investigated in a large number of surface depleted silicon nano-
and micro-structures. The resistance is shown to vary strongly with time due to
electron and hole trapping at the sample surfaces. Importantly, this time
varying re... | 1010.1633v1 |
2011-03-08 | Electric--field effect on electron-doped infinite-layer Sr$_{0.88}$La$_{0.12}$CuO$_{2+x}$ thin films | We have used the electric--field effect to modulate the resistivity of the
surface of underdoped Sr$_{0.88}$La$_{0.12}$CuO$_{2+x}$ thin films, allowing
opposite modifications of the electron and hole density in the CuO$_2$ planes,
an original situation with respect to conventional chemical doping in
electron-doped mate... | 1103.1548v2 |
2011-03-17 | Structure-related transport properties of A-site ordered perovskite Sr3ErMn4-xGaxO10.5-d | We report x-ray diffraction, resistivity, thermopower, and magnetization of
Sr3ErMn4-xGaxO10.5-d, in which A-site ordered tetragonal phase appears above
x=1, and reveal that the system exhibits typical properties seen in the
antiferromagnetic insulator with Mn3+. We succeed in preparing both A-site
ordered and disorder... | 1103.3342v1 |
2011-08-19 | Hydrostatic pressure study of paramagnetic-ferromagnetic phase transition in (Ga,Mn)As | The effect of hydrostatic pressure on the paramagnetic - ferromagnetic phase
transition has been studied in (Ga,Mn)As. The variation of the Curie
temperature (TC) with pressure was monitored by two transport methods: (1) -
measurement of zero field resistivity versus temperature {\rho}(T), (2) -
dependence on temperatu... | 1108.3960v1 |
2011-09-26 | Anomalous Hall effect in the Co-based Heusler compounds Co$_{2}$FeSi and Co$_{2}$FeAl | The anomalous Hall effect (AHE) in the Heusler compounds Co$_{2}$FeSi and
Co$_{2}$FeAl is studied in dependence of the annealing temperature to achieve a
general comprehension of its origin. We have demonstrated that the crystal
quality affected by annealing processes is a significant control parameter to
tune the elec... | 1109.5498v1 |
2011-10-22 | Anomalous negative differential thermal resistance in a momentum-conserving lattice | A two-segment Fermi-Pasta-Ulam lattices has been investigated by using
nonequilibrium molecular dynamics. Here we present an anomalous negative
differential thermal resistance (NDTR) that have not been reported in
Frenkel-Kontorova and \phi_4 lattices up to the present. The NDTR disappears at
low temperature region. Th... | 1110.4942v1 |
2011-12-09 | Temperature Coefficient of Resistivity in Amorphous Semiconductors | By invoking the microscopic response method in conjunction with a reasonable
set of approximations, we obtain new explicit expressions for the electrical
conductivity and temperature coefficient of resistivity (TCR) in amorphous
semiconductors, especially a-Si:H and a-Ge:H. The predicted TCR for n-doped
a-Si:H and a-Ge... | 1112.2169v2 |
2012-08-19 | Interplay between sheet resistance increase and magnetotransport properties in ${\rm LaAlO_3}/{\rm SrTiO_3}$ | We find that the sheet resistance ($R_s$) of patterned samples of ${\rm
LaAlO_3}/{\rm SrTiO_3}$ with a length scale of several microns may increase
significantly at low temperatures in connection with driving electrical
currents and applying in-plane magnetic fields. As the samples are warmed up,
$R_s$ recovers to its ... | 1208.3837v1 |
2012-09-24 | Observation of linear-polarization-sensitivity in the microwave-radiation-induced magnetoresistance oscillations | In the quasi two-dimensional GaAs/AlGaAs system, we investigate the effect of
rotating \textit{in-situ} the electric field of linearly polarized microwaves
relative to the current, on the microwave-radiation-induced magneto-resistance
oscillations. We find that the frequency and the phase of the photo-excited
magneto-r... | 1209.5135v1 |
2012-10-09 | Thermopower as sensitive probe of electronic nematicity in iron pnictides | We study the in-plane anisotropy of the thermoelectric power and electrical
resistivity on detwinned single crystals of isovalent substituted
EuFe$_{2}$(As$_{1-x}$P$_{x}$)$_2$. Compared to the resistivity anisotropy the
thermopower anisotropy is more pronounced and clearly visible already at
temperatures much above the... | 1210.2634v2 |
2012-10-29 | Anomalous Energy Transport across Topological Insulator Superconductor Junctions | We study the nonequilibrium energy transport across a topological
insulator/superconductor junction, by deriving an interfacial heat current
formula through scattering wave approach. Several anomalous thermal properties
are uncovered, such as thermal energy's Klein tunneling, asymmetric Kapitza
resistance and negative ... | 1210.7551v2 |
2012-10-29 | Resistance Switching Induced by Electric Field and Light Illumination in Device of FTO/CeO2/Electrolyte/FTO | A heterojunction-like device consisting of FTO/CeO2/electrolyte/FTO is
established with distinct transport performance, where FTO denotes F-doped
transparent conducting glass, and the electrolyte is LiI and I2 in
acetonitrile. The resistive switching behavior is observed, being induced
through applying sufficient negat... | 1210.7558v2 |
2012-11-06 | Angular dependence of the Hall effect of lsmo films | We find that the Hall effect resistivity ($\rho_{xy}$) of thin films of
\lsmo\ varies as a function of the angle $\theta$ between the applied magnetic
field and the film normal as $\rho_{xy}=a\cos \theta + b\cos 3\theta$, where
$|b|$ increases with increasing temperature and decreases with increasing
magnetic field. We... | 1211.1160v1 |
2013-09-25 | Magnetic and transport properties of Mn2CoAl oriented thin films | The structure, magnetic and transport properties of thin films of the Heusler
ferrimagnet Mn_{2}CoAl have been investigated for properties related to spin
gapless semiconductors. Oriented films were grown by molecular beam epitaxy on
GaAs substrates and the structure was found to transform from tetragonal to
cubic for ... | 1309.6660v1 |
2014-02-15 | Ferromagnetism and transport properties of the Kondo system Ce4Sb1.5Ge1.5 | Ferromagnetic ordering with a small magnetic moment is found below 14 K from
SQUID measurements for the compound Ce4Sb1.5Ge1.5. The transport
characteristics of a number of Ce4Sb3-xTx (T = Ge, Si, Sn, Pb, Al) systems were
measured at room temperature, Ce4Sb1.5Ge1.5 demonstrating the highest Seebeck
coefficient. Its tra... | 1402.3667v2 |
2014-02-20 | Transverse ultrasonic anomaly in La1/3Sr2/3MnO3 | The charge ordering (CO) transition in polycrystalline La1/3Sr2/3MnO3 has
been studied by measuring the resistivity, magnetization and transverse
ultrasonic velocity. At about 235K, a conspicuous increase in resistivity was
observed, while the magnetization shows a cusp structure, corresponding to an
antiferromagnetic ... | 1402.4857v2 |
2014-03-01 | Anomalies of transport properties in antiferromagnetic YbMn2Sb2 compound | The low-temperature transport properties (resistivity, thermal conductivity,
thermoelectric power) are experimentally investigated for the compound
YbMn2Sb2. Large Seebeck coefficient and nearly linear temperature dependence of
resistivity are obtained. The thermal conductivity is large and has mainly
phonon origin. Ap... | 1403.0077v2 |
2014-05-23 | Photovoltaic performance of n-type SnS active layer in ITO/PEDOT:PSS/SnS/Al structure | The present paper discusses the influence of Tin Sulphide's grain size on the
performance of ITO/PEDOT:PSS/SnS/Al structured solar cells fabricated by
thermal evaporation. The grain sizes were maintained in the range of 11-18~nm
by controlling the thickness of SnS films. While the open circuit voltage (Voc)
was found t... | 1405.6013v1 |
2014-07-29 | Proximity coupling of granular film with ferroelectric substrate and giant electro-resistance effect | We study electron transport in granular film placed above the ferroelectric
substrate. We show that the conductivity of granular film strongly depends on
the ferroelectric state due to screening effects which modify the Coulomb
blockade in granular film. In particular, the electric current in granular film
is controlle... | 1407.7719v2 |
2014-10-28 | Tunable Solid State and Flexible Graphene Electronics | We demonstrate tunable solid state and flexible graphene field effect devices
(FEDs) fabricated using a poly(methylmethacrylate) (PMMA) and lithium fluoride
(LiF) composite dielectric. Increasing the concentration of LiF in the
composite dielectric reduces the operating gate voltages significantly from 10
V to 1 V requ... | 1410.7563v1 |
2015-12-29 | Scaling like behaviour of resistivity observed in LaNiO_3 thin films grown on SrTiO_3 substrate by pulsed laser deposition | We discuss the origin of the temperature dependence of resistivity observed
in highly oriented LaNiO_3 thin films (of thickness d) grown on SrTiO_3
substrate by a pulsed laser deposition technique. All the experimental data are
found to collapse into a single universal curve [T/T_{sf}(d)]^{3/2} for the
entire temperatu... | 1512.08812v1 |
2016-02-22 | Exchange magnon induced resistance asymmetry in permalloy spin-Hall oscillators | We investigate magnetization dynamics in a spin-Hall oscillator using a
direct current measurement as well as conventional microwave spectrum analysis.
When the current applies an anti-damping spin-transfer torque, we observe a
change in resistance which we ascribe to the excitation of incoherent exchange
magnons. A si... | 1602.06710v1 |
2016-06-16 | Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case | In this paper we show that the widely accepted method of the determination of
Curie temperature (TC) in (Ga,Mn)As samples, based on the position of the peak
in the temperature derivative of the resistivity,completely fails in the case
of non-metallic and low-TC unannealed samples. In this case we propose an
alternative... | 1606.05132v1 |
2016-10-04 | Hidden Fermi-liquid charge transport in the antiferromagnetic phase of the electron-doped cuprates | Systematic analysis of the planar resistivity, Hall effect and cotangent of
the Hall angle for the electron-doped cuprates reveals underlying Fermi-liquid
behavior even deep in the antiferromagnetic part of the phase diagram. The
transport scattering rate exhibits a quadratic temperature dependence, and is
nearly indep... | 1610.01181v1 |
2018-02-06 | Exploring the energy landscape of resistive switching in antiferromagnetic Sr(3)Ir(2)O(7) | We study the resistive switching triggered by an applied electrical bias in
antiferromagnetic Mott insulator Sr(3)Ir(2)O(7). The switching was previously
associated with an electric-field driven structural transition. Here we use
time-resolved measurements of the switching to probe the energy barrier
associated with th... | 1802.01923v1 |
2018-01-13 | Electrochemical and mechanical behaviors of dissimilar friction stir welding between 5086 and 6061 aluminum alloy | The electrochemical behavior and mechanical properties of friction stir
welded AA5086 and AA6061 Al alloys were investigated. Micro-hardness
measurements and tensile tests showed that the heat-affected zone (HAZ) in
AA6061 had minimum hardness value (i.e., 88 HV) and served as failure site in
the dissimilar weld. Corro... | 1802.03460v1 |
2018-02-21 | Gate-tunable memristors from monolayer MoS2 | We report here gate-tunable memristors based on monolayer MoS2 grown by
chemical vapor deposition (CVD). These memristors are fabricated in a
field-effect geometry with the channel consisting of polycrystalline MoS2 films
with grain sizes of 3-5 um. The device characteristics show switching ratios up
to 500, with the r... | 1802.07785v1 |
2018-06-11 | Low-temperature resistance in metals without inversion Center | The well known quadratic low-temperature dependence of resistance in ordinary
metals habitually serves as the criterium of applicability of the Landau Fermi
liquid theory to the description of electron liquid in concrete material. Such
a type of behavior is determined by momentum relaxation due to the
electron-electron... | 1806.03952v3 |
2019-02-24 | Half-Metallic Ferromagnets and Spin Gapless Semiconductors | A brief review of experimental and theoretical studies of half-metallic
ferromagnets (HMF) and spin gapless semiconductors (SGS) is given. The data on
resistivity and magnetoresistivity are presented. An important role of
non-quasiparticle states owing to electron-magnon scattering in transport
properties is discussed.... | 1902.08972v1 |
2007-10-09 | The approach to a superconductor-to-Bose-insulator transition in disordered films | Through a detailed study of scaling near the magnetic field-tuned
superconductor-to-insulator transition in strongly disordered films, we find
that results for a variety of materials can be collapsed onto a single phase
diagram. The data display two clear branches, one with weak disorder and an
intervening metallic pha... | 0710.1822v1 |
2019-04-26 | Semiconductor to metal transition for Ni doped CdO thin films | In the present investigation resistivity Vs temperature measurements have
been performed for solgel prepared pure and Ni doped CdO (NDO) thin films. The
semiconducting behavior i.e. negative temperature coefficient of resistivity
(TCR) of pure CdO thin film through-out the whole temperature range can be
attributed main... | 1904.11683v1 |
2012-03-02 | Oxygen-vacancy-mediated Negative Differential Resistance in La and Mg co-substituted BiFeO3 Thin Film | The conductive characteristics of Bi0.9La0.1Fe0.96Mg0.04O3(BLFM) thin film
are investigated at various temperatures and a negative differential resistance
(NDR) is observed in the thin film, where a leakage current peak occurs upon
application of a downward electric field above 80 oC. The origin of the NDR
behavior is ... | 1203.0458v1 |
2015-06-01 | Soft-mask fabrication of gallium arsenide nanomembranes for integrated quantum photonics | We report on the fabrication of quantum photonic integrated circuits based on
suspended GaAs membranes. The fabrication process consists of a single
lithographic step followed by inductively-coupled-plasma dry etching through an
electron-beam-resist mask and wet etching of a sacrificial layer. This method
does not requ... | 1506.00376v1 |
2015-06-11 | Three-dimensional continuum dislocation theory | A three-dimensional continuum dislocation theory for single crystals
containing curved dislocations is proposed. A set of governing equations and
boundary conditions is derived for the true placement, plastic slips, and loop
functions in equilibrium that minimize the free energy of crystal among all
admissible function... | 1506.03570v1 |
2015-07-16 | Operation of graphene quantum Hall resistance standard in a cryogen-free table-top system | We demonstrate quantum Hall resistance measurements with metrological
accuracy in a small cryogen-free system operating at a temperature of around
3.8K and magnetic fields below 5T. Operating this system requires little
experimental knowledge or laboratory infrastructure, thereby greatly advancing
the proliferation of ... | 1507.04601v1 |
2019-01-15 | Effect of thermal history on magnetism in UCoGa | Single crystals of UCoGa have been grown in different conditions and
subsequently annealed in order to provide a collection of samples representing
various quality as to concentration of lattice defects. The different sample
quality "grades" have been characterized by values of residual electrical
resistivity. Correlat... | 1901.04806v2 |
2019-11-12 | Effect of Interfacial Thermal Resistance in Thermal Cloak | When heat transfers through interface between two different materials, it
will encounter an interfacial thermal resistance (ITR) that makes the
temperature discontinuous. This effect has been totally neglected so far in the
research of thermal cloak, in particular when the thermal cloak is built with
multilayer structu... | 1911.05098v2 |
2020-07-02 | Current distribution in metallic multilayers from resistance measurements | The in-plane current profile within multilayers of generic structure
Ta/Pt/(CoNi)/Pt/Ta is investigated. A large set of samples where the thickness
of each layer is systematically varied was grown, followed by the measurement
of the sheet resistance of each sample. The data are analyzed by a series of
increasingly elab... | 2007.00990v1 |
2021-07-09 | Transport and relaxation of current-generated nonequilibrium phonons from nonlocal electronic measurements | We study phonons generated by current in a Pt nanowire, by measuring
resistance of another nanowire separated from the first one by an insulating
spacer. For thin spacers, the resistance varies almost linearly with current at
cryogenic temperatures, while an additional quadratic contribution emerges for
thicker spacers... | 2107.04634v1 |
2022-05-27 | Adhesive Transfer operates during Galling | In order to reduce cobalt within the primary circuit of pressurised water
reactors (PWRs), wear-resistant steels are being researched and developed. In
particular interest is the understanding of galling mechanisms, an adhesive
wear mechanism which is particularly prevalent in PWR valves. Here we show that
large shear ... | 2205.14231v2 |
2022-07-12 | Multiscale Modeling of Semimetal Contact to Two-Dimensional Transition Metal Dichalcogenide Semiconductor | A multiscale simulation approach is developed to simulate the contact
transport properties between semimetal to a monolayer two-dimensional (2D)
transition metal dichalcogenide (TMDC) semiconductor. The results elucidate the
mechanisms for low contact resistance between semimetal and TMDC semiconductor
contacts from a ... | 2207.05781v1 |
2023-05-09 | Thermo-electric history effects and resistive switching in epitaxial thin film of Mott insulator V2O3 | We report interesting thermo-electric history effects associated with an
electric field-induced first order phase transition from Mott-insulator to the
metallic state in the epitaxial thin film of V2O3. This phase transition
results in tuneable resistive switching in V2O3. These findings are promising
for novel technol... | 2305.05190v1 |
2023-11-20 | First principles residual resistivity using locally self-consistent multiple scattering method | The locally self-consistent multiple scattering (LSMS) method can perform
efficient first-principles calculations of systems with large number of atoms.
In this work, we combine the Kubo-Greenwood equation with LSMS, enabling us to
calculate first-principles residual resistivity of large systems. This has been
implemen... | 2311.12134v1 |
2024-02-29 | Current-induced sliding motion in a helimagnet MnAu$_2$ | We have found a signature of current-induced sliding motion in a helimagnet
MnAu$_2$ thin film. In the helimagnetic state with a uniform chirality,
differential resistivity shows an abrupt change at a threshold bias current.
Judging from the similarity to the canonical charge/spin density wave systems,
we have ascribed... | 2403.00167v1 |
2005-09-21 | Effect of iron-doping on spin-state transition and ferromagnetism in Pr$_{0.5}$Ca$_{0.5}$CoO$_{3-δ}$ cobalt oxides | Resistivity and dc magnetization measurements were performed for the
polycrystalline Pr$_{0.5}$Ca$_{0.5}$Co$_{1-x}$Fe$_{x}$O$_{3-\delta}$ ($x$ = 0,
0.05, 0.10 and 0.15) samples. The as-fabricated samples exhibit ferromagnetic
(FM) transition and the transition temperature increases with increasing the
iron doping level... | 0509533v1 |
2008-01-08 | Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor | Despite twenty years of research, the phase diagram of high transition-
temperature superconductors remains enigmatic. A central issue is the origin of
the differences in the physical properties of these copper oxides doped to
opposite sides of the superconducting region. In the overdoped regime, the
material behaves a... | 0801.1281v1 |
2015-11-16 | Accurate Measurements of Cross-plane Thermal Conductivity of Thin Films by Dual-Frequency Time-Domain Thermoreflectance (TDTR) | Accurate measurements of the cross-plane thermal conductivity {\Lambda}_cross
of a high-thermal-conductivity thin film on a low-thermal-conductivity
({\Lambda}_s) substrate (e.g., {\Lambda}_cross/{\Lambda}_s>20) are challenging,
due to the low thermal resistance of the thin film compared to that of the
substrate. In pr... | 1511.04852v2 |
2015-12-04 | 2D layered transport properties from topological insulator Bi$_2$Se$_3$ single crystals and micro flakes | Low-field magnetotransport measurements of topological insulators such as
Bi$_2$Se$_3$ are important for revealing the nature of topological surface
states by quantum corrections to the conductivity, such as
weak-antilocalization. Recently, a rich variety of high-field magnetotransport
properties in the regime of high ... | 1512.01442v2 |
2015-12-22 | Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe | The coexistence and competition between superconductivity and electronic
orders, such as spin or charge density waves, have been a central issue in high
transition-temperature (${T_{\rm c}}$) superconductors. Unlike other iron-based
superconductors, FeSe exhibits nematic ordering without magnetism whose
relationship wi... | 1512.06951v1 |
2016-06-06 | Comeback of epitaxial graphene for electronics: large-area growth of bilayer-free graphene on SiC | We present a new fabrication method for epitaxial graphene on SiC which
enables the growth of ultra-smooth defect- and bilayer-free graphene sheets
with an unprecedented reproducibility, a necessary prerequisite for wafer-scale
fabrication of high quality graphene-based electronic devices. The inherent but
unfavorable ... | 1606.01709v1 |
2018-06-01 | Amplifier for scanning tunneling microscopy at MHz frequencies | Conventional scanning tunneling microscopy (STM) is limited to a bandwidth of
circa 1kHz around DC. Here, we develop, build and test a novel amplifier
circuit capable of measuring the tunneling current in the MHz regime while
simultaneously performing conventional STM measurements. This is achieved with
an amplifier ci... | 1806.00374v1 |
2019-09-27 | Distinctive Thermoelectric Properties of Supersaturated Si-Ge-P Compounds: Achieving Figure of Merit ZT > 3.6 | The efficiency of energy conversion in thermoelectric generators (TEGs) is
directly proportional to electrical conductivity and Seebeck coefficient while
inversely to thermal conductivity. The challenge is to optimize these
interdependent parameters simultaneously. In this work, the problem is
addressed with a novel ap... | 1909.12476v1 |
2019-02-27 | Learning nonlinear level sets for dimensionality reduction in function approximation | We developed a Nonlinear Level-set Learning (NLL) method for dimensionality
reduction in high-dimensional function approximation with small data. This work
is motivated by a variety of design tasks in real-world engineering
applications, where practitioners would replace their computationally intensive
physical models ... | 1902.10652v3 |
2015-06-29 | Bilayer Insulator Tunnel Barriers for Graphene-Based Vertical Hot-electron Transistors | Vertical graphene-based device concepts that rely on quantum mechanical
tunneling are intensely being discussed in literature for applications in
electronics and optoelectronics. In this work, the carrier transport mechanisms
in semiconductor-insulator-graphene (SIG) capacitors are investigated with
respect to their su... | 1506.08721v2 |
2019-01-05 | Transmission lines and resonators based on quantum Hall plasmonics: electromagnetic field, attenuation and coupling to qubits | Quantum Hall edge states have some characteristic features that can prove
useful to measure and control solid state qubits. For example, their high
voltage to current ratio and their dissipationless nature can be exploited to
manufacture low-loss microwave transmission lines and resonators with a
characteristic impedan... | 1901.01455v1 |
2020-01-16 | Anisotropic character of the metal-to-metal transition in Pr4Ni$_3$O$_{10}$ | As a member of the Ruddlesden-Popper Ln$_{n+1}$Ni$_n$O$_{3n+1}$ series
rare-earth-nickelates, the Pr4Ni$_3$O$_{10}$ consists of infinite
quasi-two-dimensional perovskite-like Ni-O based layers. Although a
metal-to-metal phase transition at Tpt = 157 K has been revealed by previous
studies, a comprehensive study of phys... | 2001.05916v2 |
2020-06-08 | 200 mm Sensor Development Using Bonded Wafers | Sensors fabricated from high resistivity, float zone, silicon material have
been the basis of vertex detectors and trackers for the last 30 years. The
areas of these devices have increased from a few square cm to $\> 200\ m^2$ for
the existing CMS tracker. High Luminosity Large Hadron Collider (HL-LHC), CMS
and ATLAS t... | 2006.04888v2 |
2021-02-11 | High-Mobility p-Channel Wide Bandgap Transistors Based on h-BN/Diamond Heterostructures | Field-effect transistors made of wide-bandgap semiconductors can operate at
high voltages, temperatures and frequencies with low energy losses, and have
been of increasing importance in power and high-frequency electronics. However,
the poor performance of p-channel transistors compared with that of n-channel
transisto... | 2102.05982v2 |
2021-03-30 | High-Tc superconductivity in clathrate calcium hydride CaH6 | Recent discovery of superconductive rare earth/actinide superhydrides has
ushered in a new era of superconductivity research at high pressures. This
distinct type of clathrate metal hydrides was first proposed for
alkaline-earth-metal hydride CaH6 that, however, has long eluded experimental
synthesis, impeding an under... | 2103.16282v3 |
2022-12-28 | Superconductivity Observed in Tantalum Polyhydride at High Pressure | We report experimental discovery of tantalum polyhydride superconductor. It
was synthesized at high pressure and high temperature conditions using diamond
anvil cell combined with in-situ high pressure laser heating techniques. The
superconductivity was investigated via resistance measurements at pressures.
The highest... | 2212.13739v3 |
2024-02-19 | Cross talk of a large-scale depleted monolithic active pixel sensor (DMAPS) in 180 nm CMOS technology | Monolithic pixel detectors combine readout electronics and sensor in a single
entity of silicon, which simplifies the production procedure and lowers the
material budget compared to conventional hybrid pixel detector concepts.
Benefiting from the advances in commercial CMOS processes towards large biasing
voltage capab... | 2402.12153v1 |
2019-02-08 | Investigating Short-term and Long-term Binder Performance of High-RAP Mixtures Containing Waste Cooking Oil | The environmental and economic benefits of recycling asphalt pavements have
received much attention in recent years. Because of the increase in the cost of
raw materials and energy carriers, the reuse of large portions of reclaimed
asphalt pavement (RAP) is critical in reducing both the cost and environmental
footprint... | 1905.13701v1 |
2016-03-12 | Complex structures of dense lithium: electronic origin | Lithium - the lightest alkali metal - exhibits unexpected structures and
electronic behaviour at high pressures. As the heavier alkalis, Li is bcc at
ambient pressure and transforms first to fcc (at 7.5 GPa). The post-fcc
high-pressure form Li-cI16 (at 40-60 GPa) is similar to Na-cI16 and related to
more complex struct... | 1603.03926v1 |
2019-03-28 | High spin-polarization in the low Curie temperature complex itinerant ferromagnet EuTi$_{1-x}$Nb$_x$O$_3$ | The physical systems with ferromagnetism and "bad" metallicity hosting
unusual transport properties are playgrounds of novel quantum phenomena.
Recently EuTi$_{1-x}$Nb$_x$O$_3$ emerged as a ferromagnetic system where
non-trivial temperature dependent transport properties are observed due to
coexistence and competition ... | 1903.12022v1 |
2011-04-22 | Can nothing be a superconductor and a superfluid? | A superconductor is a material that conducts electric current with no
resistance. Superconductivity and magnetism are known to be antagonistic
phenomena: superconductors expel weak external magnetic field (the Meissner
effect) while a sufficiently strong magnetic field, in general, destroys
superconductivity. In a seem... | 1104.4404v1 |
2019-06-14 | Tunneling Magnetoresistance and Spin-Dependent Diode Performance in Fully Epitaxial Magnetic Tunnel Junctions with Rock-salt Type ZnO/MgO | We fabricate fully epitaxial Fe/ZnO/MgO/Fe magnetic tunnel junctions (MTJs)
with a bilayer tunnel barrier, in which ZnO has a metastable rock-salt crystal
structure. We observe a high magnetoresistance ratio up to 96% at room
temperature (RT) and find that these MTJs have asymmetric current-voltage
characteristics, and... | 1906.05981v1 |
2020-11-24 | Inkjet printed circuits with two-dimensional semiconductor inks for high-performance electronics | Air-stable semiconducting inks suitable for complementary logic are key to
create low-power printed integrated circuits (ICs). High-performance printable
electronic inks with two-dimensional materials have the potential to enable the
next generation of high performance, low-cost printed digital electronics. Here
we dem... | 2011.12359v1 |
2020-11-26 | A two-dimensional electron gas based on a 5s oxide with high room-temperature mobility and strain sensitivity | The coupling of optical and electronic degrees of freedom together with
quantum confinement in low-dimensional electron systems is particularly
interesting for achieving exotic functionalities in strongly correlated oxide
electronics. Recently, high room-temperature mobility has been achieved for a
large bandgap transp... | 2011.13106v2 |
2021-06-17 | Quasi-solid-state sodium-ion hybrid capacitors enabled by UiO-66@PVDF-HFP multifunctional separators: selective charge transfer and high safety | The practical application of sodium-ion hybrid capacitors is limited by their
low energy densities resulted from the kinetics mismatch between cathodes and
anodes, and the fire safety related to the flammable electrolyte-separator
system. Hence, we report a rational design of metal-organic frameworks (MOFs,
UiO-66) mod... | 2106.09654v1 |
2021-12-13 | Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5 | High-entropy-alloy (HEA) superconductors are a new class of disordered
superconductors. In this study, we investigate the robustness of
superconducting states in HEA-type metal telluride (MTe; M = Ag, In, Sn, Pb,
Bi) under high pressure. PbTe exhibits a structural transition from a NaCl-type
to an orthorhombic Pnma str... | 2112.06461v1 |
2022-12-12 | Robust superconductivity and fragile magnetism induced by the strong Cu impurity scattering in the high-pressure phase of FeSe | Superconductivity in FeSe is strongly enhanced under applied pressure and it
is proposed to emerge from anomalously coupled structural and magnetic phases.
Small impurities inside the Fe plane can strongly disrupt the pair formation in
FeSe at ambient pressure and can also reveal the interplay between normal and
superc... | 2212.06128v1 |
2023-01-30 | Semimetal-Monolayer Transition Metal Dichalcogenides Photodetectors for Wafer-Scale Ultraviolet Photonics | Atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDs),
such as MoS$_2$, are promising candidates for nanoscale photonics because of
strong-light matter interactions. However, Fermi level pinning due to
metal-induced gap (MIGS) states at the metals-monolayer MoS$_2$ interface
limits the applicatio... | 2301.12635v1 |
2023-04-13 | Self-doping effect in confined copper selenide semiconducting quantum dots for efficient photoelectrocatalytic oxygen evolution | Self-doping can not only suppress the photogenerated charge recombination of
semiconducting quantum dots by self-introducing trapping states within the
bandgap, but also provide high-density catalytic active sites as the
consequence of abundant non-saturated bonds associated with the defects. Here,
we successfully prep... | 2304.06422v1 |
2009-12-15 | Kondo effect and absence of quantum interference effects in the charge transport of cobalt doped iron pyrite | The Hall effect and resistivity of the carrier doped magnetic semiconductor
Fe$_{1-x}$Co$_x$S$_2$ were measured for $0\le x \le 0.16$, temperatures between
0.05 and 300 K, and fields of up to 9 T. Our Hall data indicate electron charge
carriers with a density of only 10 to 30% of the Co density of our crystals.
Despite... | 0912.2980v1 |
2022-01-04 | Superior effect of edge relative to basal plane functionalization of graphene in enhancing polymer-graphene nanocomposite thermal conductivity-A combined molecular dynamics and Greens functions study | To achieve high thermal conductivity (k) of polymer graphene nanocomposites,
it is critically important to achieve efficient thermal coupling between
graphene and its surrounding polymers through effective functionalization
schemes. In this work, we demonstrate that edge-functionalization of graphene
nanoplatelets (GnP... | 2201.01011v1 |
2008-11-14 | Electronic transport in ferromagnetic alloys and the Slater-Pauling Curve | Experimental measurements of the residual resistivity $\rho(x)$ of the binary
alloy system Fe$_{1-x}$Cr$_x$ have shown an anomalous concentration dependence
which deviates significantly from Nordheim's rule. In the low ($x < 10%$) Cr
concentration regime the resistivity has been found to increase linearly with
$x$ unti... | 0811.2303v1 |
2020-12-11 | Improving fretting corrosion resistance of CoCrMo alloy with TiSiN and ZrN coatings for orthopedic applications | Total hip replacement is the most effective treatment for late stage
osteoarthritis. However, adverse local tissue reactions (ALTRs) associated with
fretting corrosion have been observed in patients with modular total hip
implants. The purpose of this study is to increase the fretting corrosion
resistance of the CoCrMo... | 2012.06614v1 |
2018-03-06 | Approach combining the Rietveld method and pairs distribution function analysis to study crystalline materials under high-pressure and/or temperature: Application to rhombohedral Bi2Te3 phase | An approach combining the Rietveld method and pairs distribution function
analysis to study crystalline materials under high pressure or temperature was
early proposed by us, and in this study, it was applied to investigate de
effect of high pressure on the rhombohedral Bi2Te3 phase. The refined
structural parameters o... | 1803.02479v1 |
2021-01-30 | Fast drying of high-alumina MgO-bonded refractory castables | Refractory producers face many challenges in terms of producing
MgO-containing castables due to the high likelihood of magnesia to hydrate in
contact with water, resulting in Mg(OH)2 generation. The expansive feature of
this transformation affects the performance of such refractories, as (i) if
this hydrated phase is n... | 2102.00217v1 |
2022-03-14 | Revisiting stress-corrosion cracking and hydrogen embrittlement in 7xxx-Al alloys at the near-atomic-scale | Hydrogen embrittlement (HE) affects all major high-strength structural
materials and as such is a major impediment to lightweighting e.g. vehicles and
help reduce carbon-emissions and reach net-zero. The high-strength 7xxx series
aluminium alloys can fulfil the need for light, high strength materials, and
are already e... | 2203.07058v1 |
2022-04-06 | First principles investigation of anionic redox in bisulfate lithium battery cathodes | The search for an alternative high-voltage polyanionic cathode material for
Li-ion batteries is vital to improve the energy densities beyond the
state-of-the-art, where sulfate frameworks form an important class of
high-voltage cathode materials due to the strong inductive effect of the
S$^{6+}$ ion. Here, we have inve... | 2204.02673v1 |
2012-09-07 | Phase relations in K_xFe_{2-y}Se_2 and the structure of superconducting K_xFe_2Se_2 via high-resolution synchrotron diffraction | Superconductivity in iron selenides has experienced a rapid growth, but not
without major inconsistencies in the reported properties. For
alkali-intercalated iron selenides, even the structure of the superconducting
phase is a subject of debate, in part because the onset of superconductivity is
affected much more delic... | 1209.1650v1 |
2015-04-10 | Esaki diodes in van der Waals heterojunctions with broken-gap energy band alignment | Van der Waals (vdW) heterojunctions composed of 2-dimensional (2D) layered
materials are emerging as a solid-state materials family that exhibit novel
physics phenomena that can power high performance electronic and photonic
applications. Here, we present the first demonstration of an important building
block in vdW so... | 1504.02810v5 |
2018-12-01 | Extrinsic n-type semiconductor transition in ZrSe2 with the metallic character through hafnium substitution | Two dimensional layered materials exhibit versatile electronic properties in
their different phases. The intrinsic electronic properties of these materials
can be modulated through doping or intercalation. In this study, we
investigated the electronic properties of Hf doped ZrSe2 single crystals using
angle-resolved ph... | 1812.00157v2 |
2021-05-19 | Synthesis and properties of free-standing monolayer amorphous carbon | Bulk amorphous materials have been studied extensively and are widely used,
yet their atomic arrangement remains an open issue. Although they are generally
believed to be Zachariasen continuous random networks, recent experimental
evidence favours the competing crystallite model in the case of amorphous
silicon. In two... | 2105.08926v1 |
2021-07-08 | Synergistic effect of workfunction and acoustic impedance mismatch for improved thermoelectric performance in GeTe/WC composite | The preparation of composite materials is promising for concurrent
optimization of electrical and thermal transport properties to realize an
improved thermoelectric (TE) performance. We report the effect of work function
and acoustic impedance mismatch (AIM) on the TE properties of
(1-z)Ge0.87Mn0.05Sb0.08Te/(z)WC compo... | 2107.03803v2 |
2022-09-09 | Asymmetrical contact scaling and measurements in MoS2 FETs | Two-dimensional (2D) materials have great potential for use in future
electronics due to their atomically thin nature which withstands short channel
effects and thus enables better scalability. Device scaling is the process of
reducing all device dimensions to achieve higher device density in a certain
chip area. For 2... | 2209.04144v2 |
2023-05-12 | Disorder and cavity evolution in single-crystalline Ge during implantation of Sb ions monitored in-situ by spectroscopic ellipsometry | Ion implantation has been a key technology for the controlled surface
modification of materials in microelectronics and generally, for tribology,
biocompatibility, corrosion resistance and many more. To form shallow junctions
in Ge is a challenging task. In this work the formation and accumulation of
shallow damage pro... | 2305.07635v1 |
2006-03-08 | Colossal Magnetoresistance Observed in Monte Carlo Simulations of the One- and Two-Orbital Models for Manganites | The one- and two-orbital double-exchange models for manganites are studied
using Monte Carlo computational techniques in the presence of a robust
electron-phonon coupling (but neglecting the antiferromagnetic exchange $J_{\rm
AF}$ between the localized spins). The focus in this effort is on the analysis
of charge trans... | 0603221v1 |
2017-11-02 | Non-equilibrium character of resistive switching and negative differential resistance in Ga-doped Cr2O3 system | We have synthesized Ga-doped Cr2O3 system with compositions Cr1.45Ga0.55O3
and Cr1.17Ga0.83O3 by chemical co-precipitation route and post annealing at
800^C. The samples have been stabilized in rhombohedral crystal structure with
space group R3C. The present work focuses on the study of non-linear
current-voltage (I-V)... | 1711.00687v1 |
2020-04-24 | Graphene-Polyurethane Coatings for Deformable Conductors and Electromagnetic Interference Shielding | Electrically conductive, polymeric materials that maintain their conductivity
even when under significant mechanical deformation are needed for actuator
electrodes, conformable electromagnetic shielding, stretchable tactile sensors
and flexible energy storage. The challenge for these materials is that the
percolated, e... | 2004.11613v1 |
2016-03-20 | Three-dimensional resistivity switching between correlated electronic states in 1T-TaS2 | Recent demonstrations of controlled switching between different ordered
macroscopic states by impulsive electromagnetic perturbations in complex
materials have opened some fundamental questions on the mechanisms responsible
for such remarkable behavior. Here we experimentally address the question of
whether two-dimensi... | 1603.06214v1 |
2019-12-17 | Antiferromagnetic CuMnAs: Ab initio description of finite temperature magnetism and resistivity | Noncollinear magnetic moments in antiferromagnets (AFM) lead to a complex
behavior of electrical transport, even to a decreasing resistivity due to an
increasing temperature. Proper treatment of such phenomena is required for
understanding AFM systems at finite temperatures; however first-principles
description of thes... | 1912.08025v4 |
2020-12-30 | Non-thermal light-assisted resistance collapse in a V$_2$O$_3$-based Mott-insulator device | The insulator-to-metal transition in Mott insulators is the key mechanism for
a novel class of electronic devices, belonging to the Mottronics family.
Intense research efforts are currently devoted to the development of specific
control protocols, usually based on the application of voltage, strain,
pressure and light ... | 2012.15255v2 |
2023-06-07 | Slip Resistance Test Apparatus of Synthetic Rubber Trackpad on Photovoltaic Surface | The increasing development of the solar energy industry in many countries has
led to a rising frequency of human and robot presence in this area. To ensure
occupational safety, various protective equipment, including rubber material,
is commonly used for slip resistance while moving on the surface of solar PV
panels. T... | 2306.10032v1 |
2023-08-14 | Temperature-dependent $f$-electron evolution in CeCoIn$_5$ via a comparative infrared study with LaCoIn$_5$ | We investigated CeCoIn$_5$ and LaCoIn$_5$ single crystals, which have the
same HoCoGa$_5$-type tetragonal crystal structure, using infrared spectroscopy.
However, while CeCoIn$_5$ has 4$f$ electrons, LaCoIn$_5$ does not. By comparing
these two material systems, we extracted the temperature-dependent electronic
evolutio... | 2308.06881v1 |
2024-02-01 | Mott resistive switching initiated by topological defects | Resistive switching is the fundamental process that triggers the sudden
change of the electrical properties in solid-state devices under the action of
intense electric fields. Despite its relevance for information processing,
ultrafast electronics, neuromorphic devices, resistive memories and
brain-inspired computation... | 2402.00747v1 |
2024-05-14 | A new ferromagnetic semiconductor system of Eu$_{1-x}$Sr$_x$AgP $(x = 0.0-0.6)$ compounds: Crystallographic, magnetic, and magneto-resistive properties | Adjusting chemical pressure through doping is a highly effective method for
customizing the chemical and physical properties of materials, along with their
respective phase diagrams, thereby uncovering novel quantum phenomena. Here, we
successfully synthesized Sr-doped Eu$_{1-x}$Sr$_x$AgP $(x = 0.0-0.6)$ and
conducted ... | 2405.08357v1 |
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