publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2012-04-16 | Complementary Resistive Switching in Tantalum Oxide-Based Resistive Memory Devices | Complementary resistive switches (CRS) are considered as a potential solution
for the sneak path problem in large-scale integration of passive crossbar
resistive memory arrays. A typical CRS is composed of two bipolar memory cells
that are connected anti-serially. Here we report a tantalum-oxide based
resistive memory ... | 1204.3515v2 |
2014-03-16 | InGaN/GaN Tunnel Junctions For Hole Injection in GaN Light Emitting Diodes | InGaN/GaN tunnel junction contacts were grown on top of an InGaN/GaN blue
(450 nm) light emitting diode wafer using plasma assisted molecular beam
epitaxy. The tunnel junction contacts enable low spreading resistance n-GaN top
contact layer thereby requiring less top metal contact coverage on the surface.
A voltage dro... | 1403.3932v1 |
2014-12-01 | Resistivity minimum in strongly phase separated manganite thin films: impact of intrinsic and extrinsic perturbations | The origin of the resistivity minimum observed in strongly phase separated
manganites has been investigated in single crystalline thin films of LPCMO
(x~0.42, y~0.40). The antiferromagnetic/charge ordered insulator
(AFM/COI)-ferromagnetic metal (FMM) phase transition, coupled with the colossal
hysteresis between the fi... | 1412.0418v1 |
2015-01-05 | Reversed anisotropy of the in-plane resistivity in the antiferromagnetic phase of iron tellurides | We systematically investigated the anisotropic in-plane resistivity of the
iron telluride including three kinds of impurity atoms: excess Fe, Se
substituted for Te, and Cu substituted for Fe. Sizable resistivity anisotropy
was found in the magneto-structurally ordered phase whereas the sign is
opposite ($\rho_a$ $>$ $\... | 1501.00774v1 |
2015-05-21 | Resistance minimum and electrical conduction mechanism in polycrystalline CoFeB thin films | The temperature dependent resistance $R$($T$) of polycrystalline
ferromagnetic CoFeB thin films of varying thickness are analyzed considering
various electrical scattering processes. We observe a resistance minimum in
$R$($T$) curves below $\simeq$ 29 K, which can be explained as an effect of
intergranular Coulomb inte... | 1505.05711v2 |
2015-10-29 | Magneto-transport behaviour of Bi2Se3-xTex: Role of disorder | Magnetoresistance and Hall resistance measurements have been carried out in
fastcooled single crystals of Bi2Se3-xTex (x: 0 to 2) in 4 to 300 K temperature
range, under magnetic fields up to 15 T. The variation of resistivity with
temperature that points to a metallic behaviour in Bi2Se3, shows an upturn at
low tempera... | 1510.08561v1 |
2015-12-10 | Mini array of quantum Hall devices based on epitaxial graphene | Series connection of four quantum Hall effect (QHE) devices based on
epitaxial graphene films was studied for realization of a quantum resistance
standard with an up-scaled value. The tested devices showed quantum Hall
plateaux RH,2 at filling factor i = 2 starting from relatively low magnetic
field (between 4 T and 5 ... | 1512.03163v2 |
2016-01-04 | Making Consistent Contacts to Graphene: Effect of Architecture and Growth Induced Defects | The effect of contact architecture, graphene defect density and
metal-semiconductor work function difference on resistivity of metal-graphene
contacts have been investigated. An architecture with metal on the bottom of
graphene is found to yield resistivities that are lower, by a factor of 4, and
most consistent as com... | 1601.00429v1 |
2016-06-13 | Effect of interstitial impurities on the field dependent microwave surface resistance of niobium | Previous work has demonstrated that the radio frequency surface resistance of
niobium resonators is dramatically reduced when nitrogen impurities are
dissolved as interstitial in the material. The origin of this effect is
attributed to the lowering of the Mattis and Bardeen surface resistance
contribution with increasi... | 1606.04174v1 |
2016-10-18 | Dichotomy between in-plane magnetic susceptibility and resistivity anisotropies in extremely strained $BaFe_{2}As_{2}$ | The in-plane resistivity and uniform magnetic susceptibility anisotropies of
$BaFe_{2}As_{2}$ are obtained with a new method, in which a large
symmetry-breaking uniaxial strain is applied using a substrate with a very
anisotropic thermal expansion. The resistivity anisotropy and its corresponding
elastoresistivity exhi... | 1610.05575v2 |
2016-12-15 | Reaction-Drift Model for Switching Transients in Pr$_{0.7}$Ca$_{0.3}$MnO$_3$ Based Resistive RAM | Earlier, the DC hole-current modeling of PCMO RRAM by drift-diffusion (DD)
including self-heating (SH) in TCAD (but without ionic transport) was able to
explain the experimentally observed SCLC characteristics, prior to resistive
switching. Further, transient analysis using DD+SH model was able to reproduce
the experim... | 1612.05293v2 |
2018-06-20 | Domain wall resistance in CoFeB-based heterostructures with interface Dzyaloshinskii-Moriya interaction | We have studied the domain wall resistance in W/Ta/CoFeB/MgO
heterostructures. The Ta layer thickness is varied to control the type of
domain walls via changes in the interfacial Dzyaloshinskii Moriya interaction.
We find a nearly constant domain wall resistance against the Ta layer
thickness. Adding contributions from... | 1806.07750v1 |
2019-02-12 | Designing multi-level resistance states for multi-bit storage using half doped manganites | Designing nonvolatile multi-level resistive devices is the necessity of time
to go beyond traditional one-bit storage systems, thus enhancing the storage
density. Here, we explore the electronic phase competition scenario to design
multi-level resistance states using a half doped CE-type charge ordered
insulating bulk ... | 1902.04377v1 |
2019-03-02 | On the origin of the anomalous peak in the resistivity of TiSe$_2$ | Resistivity measurements of TiSe$_2$ typically show only a weak change in
gradient at the charge density wave transition at $T_{CDW}\approx$ 200~K, but
more prominently feature a broad peak at a lower $T_{peak}\sim$ 165~K, which
has remained poorly understood despite decades of research on the material.
Here we present... | 1903.00756v1 |
2012-06-13 | Modelling of Current Percolation Channels in Emerging Resistive Switching Elements | Metallic oxides encased within Metal-Insulator-Metal (MIM) structures can
demonstrate both unipolar and bipolar switching mechanisms, rendering them the
capability to exhibit a multitude of resistive states and ultimately function
as memory elements. Identifying the vital physical mechanisms behind resistive
switching ... | 1206.2746v1 |
2019-06-07 | Extended Nyquist formula for a resistance subject to a heat flow | The Nyquist formula quantifies the thermal noise driven fluctuations of
voltage across a resistance in equilibrium. We deal here with the case of a
resistance driven out of equilibrium by putting it in contact with two
thermostats at different temperatures. We reach a non-equilibrium steady state
where a heat flux is f... | 1906.02974v2 |
2020-06-22 | Optimal design of a bilayer for the highest thermal resistance: A lesson learned from the shells of snails from hydrothermal extreme environment | Inspired by the unique design of the shells of snails inhabiting the deep-sea
hydrothermal environment, here we theoretically study the temperature response
of a bilayer to an external thermal impulse. A semi-analytical solution to the
temperature field in the bilayer is obtained, allowing us to assess the peak
tempera... | 2006.11987v1 |
2020-11-01 | Reduction of interfacial thermal resistance of overlapped graphene by bonding carbon chains | Exploring the mechanism of interfacial thermal transport and reducing the
interfacial thermal resistance is of great importance for thermal management
and modulation. Herein, the interfacial thermal resistance between overlapped
graphene nanoribbons is largely reduced by adding bonded carbon chains by
performing molecu... | 2011.00494v1 |
2021-04-15 | Origins of anisotropic transport in electrically-switchable antiferromagnet $\mathrm{Fe_1/3NbS_2}$ | Recent experiments on the antiferromagnetic intercalated transition metal
dichalcogenide $\mathrm{Fe_{1/3}NbS_2}$ have demonstrated reversible
resistivity switching by application of orthogonal current pulses below its
magnetic ordering temperature, making $\mathrm{Fe_{1/3}NbS_2}$ promising for
spintronics applications... | 2104.07591v1 |
2021-08-01 | First-principles study on the electrical resistivity in zirconium dichalcogenides with multi-valley bands: mode-resolved analysis of electron-phonon scattering | Based on the first-principles calculations, we study the electron-phonon
scattering effect on the resistivity in the zirconium dichalcogenides,
$\text{Zr}_{}\text{S}_{2}$ and $\text{Zr}_{}\text{Se}_{2}$, whose electronic
band structures possess multiple valleys at conduction band minimum. The
computed resistivity exhib... | 2108.00474v1 |
2024-02-15 | What can we learn from nonequilibrium response of a strange metal? | We critically address the recent experiment [Science 382, 907 (2023)] on
nonequilibrium transport and noise in a strange metal YbRh2Si2 patterned into
the nanowire shape. In the long device, resistivity, differential resistance
and current noise data seem to be consistent allowing us to extract
electron-phonon coupling... | 2402.09946v1 |
2023-07-27 | Reduced stress propagation leads to increased mechanical failure resistance in auxetic materials | Materials with negative Poisson ratio have the counter-intuitive property of
expanding laterally when they are stretched longitudinally. They are
accordingly termed auxetic, from the Greek auxesis meaning to increase.
Experimental studies have demonstrated auxetic materials to have superior
material properties, compare... | 2307.14914v2 |
2014-11-28 | Signature of high Tc around 25K in higher quality heavily boron-doped diamond | Diamond has outstanding physical properties: the hardest known material, a
wide band gap, the highest thermal conductivity, and a very high Debye
temperature. In 2004, Ekimov et al. discovered that heavily boron-doped
(B-doped) diamond becomes a superconductor around 4 K. Our group successfully
controlled the boron con... | 1411.7752v1 |
2019-08-21 | Fatigue-resistant high-performance elastocaloric materials via additive manufacturing | Elastocaloric cooling, which exploits the latent heat released and absorbed
as stress-induced phase transformations are reversibly cycled in shape memory
alloys, has recently emerged as a frontrunner in non-vapor-compression cooling
technologies. The intrinsically high thermodynamic efficiency of elastocaloric
material... | 1908.07900v1 |
2019-07-31 | Quantum oscillations in diamond field effect transistors with a h-BN gate dielectric | Diamond has attracted attention as a next-generation semiconductor because of
its various exceptional properties such as a wide bandgap and high breakdown
electric field. Diamond field effect transistors, for example, have been
extensively investigated for high-power and high-frequency electronic
applications. The qual... | 1907.13500v2 |
2021-12-08 | High-Mg Calcite Nanoparticles Within a Low-Mg Calcite Matrix via Spinodal Decomposition: A Widespread Phenomenon in Biomineralization | During the process of biomineralization, organisms utilize various
biostrategies to enhance the mechanical durability of their skeletons. In this
work, we establish that the presence of high-Mg nanoparticles embedded within
lower Mg calcite matrices is a widespread strategy utilized by various
organisms from different ... | 2112.04141v1 |
2022-08-11 | Superconductivity above 80 K in polyhydrides of hafnium | Studies on polyhydrides are attracting growing attentions recently due to
their potential high temperature superconductivity (SC). We here report the
discovery of SC in hafnium polyhydrides at high pressures. The hafnium
superhydrides are synthesized at high pressure and high temperature conditions
using diamond anvil ... | 2208.05816v2 |
2001-05-16 | Superconducting properties of well-shaped MgB2 single crystal | We report measurements of the transport and the magnetic properties of
high-quality, sub-millimeter-sized MgB2 single crystals with clear
hexagonal-plate shapes. The low-field magnetization and the magnetic hysteresis
curves show the vortex pinning of these crystals to be very weak. The Debye
temperature of $\Theta_{D}... | 0105330v7 |
2003-09-24 | Quantum Effects in Thermal Conductivity of Solid Krypton - Methane Solutions | The dynamic interaction of a quantum rotor with its crystalline environment
has been studied by measurement of the thermal conductivity of solid
Kr1_c(CH4)_c solutions at c = 0.05-0.75 in the temperature region from 2 up to
40K. The thermal resistance of the solutions was mainly determined by the
resonance scattering o... | 0309542v1 |
2005-05-19 | Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9 | We have performed both in-plane resistivity, Hall effect and specific heat
measurements on the thermoelectric cobalt oxide Ca$_{3}$Co$_{4}$O$_{9}$. Four
distinct transport regimes are found as a function of temperature,
corresponding to a low temperature insulating one up to $T_{min}\approx $63 K,
a strongly correlated... | 0505464v1 |
2005-10-03 | New Misfit-Layered Cobalt Oxide (CaOH)1.14CoO2 | We found a new cobalt oxide (CaOH)1.14CoO2 by utilizing the high-pressure
technique. X-ray and electron diffraction studies revealed that the compound
has layer structure which consists of CdI2-type CoO2 layers and rock-salt-type
double CaOH atomic layers. The two subcells have incommensurate periodicity
along the a-ax... | 0510031v1 |
2007-09-12 | The Hot-Spot Phenomenon and its Countermeasures in Bipolar Power Transistors by Analytical Electro-Thermal Simulation | This communication deals with a theoretical study of the hot spot onset (HSO)
in cellular bipolar power transistors. This well-known phenomenon consists of a
current crowding within few cells occurring for high power conditions, which
significantly decreases the forward safe operating area (FSOA) of the device.
The stu... | 0709.1831v1 |
2007-09-14 | An inhomogeneous Josephson phase in thin-film and High-Tc superconductors | In many cases inhomogeneities are known to exist near the metal (or
superconductor)-insulator transition, as follows from well-known domain-wall
arguments. If the conducting regions are large enough (i.e. when the T=0
superconducting gap is much larger than the single-electron level spacing), and
if they have supercond... | 0709.2321v1 |
2009-03-18 | Two-dimensional electrochemical model for mixed conductors: a study of ceria | A two-dimensional small bias model has been developed for a patterned metal
current collector $|$ mixed oxygen ion and electronic conductor (MIEC) $|$
patterned metal current collector electrochemical cell in a symmetric gas
environment. Specifically, we compute the electrochemical potential
distributions of oxygen vac... | 0903.3250v1 |
2009-11-11 | The pseudogap behavior in the stoichiometric FeSe superconductor (Tc~9.4 K) | This paper reports the synthesis and superconducting behaviors of the
tetragonal iron-chalcogenide superconductor FeSe. The electrical resistivity
and magnetic moment measurements confirmed its superconductivity with a
$T_c^{zero}$ and $T_c^{mag}$ at 9.4 K under ambient pressure. EPMA indicated
the sample to have a sto... | 0911.2045v2 |
2010-07-22 | Anisotropic fluctuations and quasiparticle excitations in FeSe_0.5Te_0.5 | We present data for the temperature dependence of the magnetic penetration
depth lambda(T), heat capacity C(T), resistivity R(T) and magnetic torque ?tau
for highly homogeneous single crystal samples of Fe1:0Se0:44(4)Te0:56(4).
lambda(T) was measured down to 200mK in zero field. We find lambda(T) follows a
power law la... | 1007.3914v2 |
2010-11-09 | Frustrated Metastable Behavior of Magnetic and Transport Properties in Charge Ordered La1-xCaxMnO3+d Manganites | We have studied the effect of metastable, irreversibility induced by repeated
thermal cycles on the electric transport and magnetization of polycrystalline
samples of La1-xCaxMnO3 (0.48\leq x \leq 0.55) close to charge ordering. With
time and thermal cycling (T<300 K) there is an irreversible transformation of
the low-... | 1011.2179v1 |
2011-05-17 | The metallic transport of (TMTSF)_2X organic conductors close to the superconducting phase | Comparing resistivity data of quasi-one dimensional superconductors
(TMTSF)_2PF_6 and (TMTSF)_2ClO_4 along the least conducting c*-axis and along
the high conductivity a -axis as a function of temperature and pressure, a low
temperature regime is observed in which a unique scattering time governs
transport along both d... | 1105.3323v2 |
2011-11-29 | Towards the Realization of Higher Connectivity in MgB2 Conductors: In-situ or Sintered Ex-situ? | The two most common types of MgB2 conductor fabrication technique - in-situ
and ex-situ - show increasing conflicts concerning the connectivity, an
effective current-carrying cross-sectional area. An in-situ reaction yields a
strong intergrain coupling with a low packing factor, while an ex-situ process
using pre-react... | 1111.6767v2 |
2012-07-25 | Metallic state in La-doped YBa$_2$Cu$_3$O$_y$ thin films with $n$-type charge carriers | We report hole and electron doping in La-doped YBa$_2$Cu$_3$O$_y$(YBCO) thin
films synthesized by pulsed laser deposition technique and subsequent
\emph{in-situ} postannealing in oxygen ambient and vaccum. The $n$-type samples
show a metallic behavior below the Mott limit and a high carrier density of
$\sim2.8$ $\times... | 1207.5914v1 |
2012-11-28 | Photoconductivity effects in mixed-phase BSCCO whiskers | We report on combined photoconductivity and annealing experiments in
whisker-like crystals of the Bi-Sr-Ca-Cu-O (BSCCO) high-Tc superconductor. Both
single-phase Bi2Sr2CaCu2O8+\delta (Bi-2212) samples and crystals of the mixed
phases Bi2Sr2Ca2Cu3O10+x (Bi-2223)/Bi-2212 have been subjected to annealing
treatments at 90{... | 1211.6594v1 |
2013-01-03 | Studies of YBa2Cu3O6+x degradation and surface conductivity properties by Scanning Spreading Resistance Microscopy | Local surface conductivity properties and surface degradation of c-axis
oriented YBa2Cu3O6+x (YBCO) thin films were studied by Scanning Spreading
Resistance Microscopy (SSRM). For the surface degradation studies, the YBCO
surface was cleaned by ion beam etching and the SSRM surface conductivity map
has been subsequentl... | 1301.0397v1 |
2013-02-21 | Electronic transport on carbon nanotube networks: a multiscale computational approach | Carbon nanotube networks are one of the candidate materials to function as
malleable, transparent, conducting films, with the technologically promising
application of being used as flexible electronic displays. Nanotubes disorderly
distributed in a film offers many possible paths for charge carriers to travel
across th... | 1302.5379v1 |
2013-12-05 | Giant topological Hall effect in strained Fe$_{0.7}$Co$_{0.3}$Si epilayers | The coupling of electron spin to real-space magnetic textures leads to a
variety of interesting magnetotransport effects. The skyrmionic spin textures
often found in chiral B20-lattice magnets give rise, via real-space Berry
phases, to the topological Hall effect, but it is typically rather small. Here,
B20-ordered Fe$... | 1312.1722v1 |
2013-12-23 | Signatures of electronic phase separation in the Hall effect of anisotropically strained La0.67Ca0.33MnO3 films | Systematic transport measurements have been performed on a series of
La0.67Ca0.33MnO3 (LCMO) thin films with varying degrees of anisotropic strain.
The strain is induced via epitaxial growth on NdGaO3(001) substrates and varied
by controlling the thermal annealing time. An antiferromagnetic insulating
(AFI) state, poss... | 1312.6670v1 |
2014-04-16 | Origin of High Temperature Oxidation Resistance of Ti-Al-Ta-N Coatings | Alloying Ti-Al-N coatings with Ta has proven to enhance their hardness,
thermal stability, and oxidation resistance. However, especially for
arc-evaporated Ti-Al-Ta-N coatings only limited information on the detailed
influence of the elements on various properties is available. Therefore, we
have developed arc-evaporat... | 1404.4345v1 |
2014-12-02 | Effect of phase separation induced supercooling on magnetotransport properties of epitaxial La5/8-yPryCa3/8MnO3 (y~0.4) thin film | Thin films of La5/8-yPryCa3/8MnO3 (y~0.4) have been grown on single crystal
SrTiO3 (001) by RF sputtering. The structural and surface characterizations
confirm the epitaxial nature of these film. However, the difference between the
rocking curve of the (002) and (110) peaks and the presence of pits/holes in
the step-te... | 1412.0862v1 |
2016-11-09 | Unusual non saturating Giant Magneto-resistance in single crystalline Bi2Te3 topological insulator | We report synthesis, structural details and electrical transport properties
of topological insulator Bi2Te3. The single crystalline specimens of Bi2Te3 are
obtained from high temperature (950C) melt and slow cooling (2C/hour). The
resultant crystals were shiny, one piece (few cm) and of bright silver color.
The Bi2Te3 ... | 1611.02859v2 |
2016-11-28 | Grand Design Spiral Arms in A Young Forming Circumstellar Disk | We study formation and long-term evolution of a circumstellar disk in a
collapsing molecular cloud core using a resistive magnetohydrodynamic
simulation. While the formed circumstellar disk is initially small, it grows as
accretion continues and its radius becomes as large as 200 AUs toward the end
of the Class-I phase... | 1611.09361v2 |
2017-09-27 | Pressure induced spin crossover in disordered α-LiFeO2 | Structural, magnetic and electrical-transport properties of {\alpha}-LiFeO2,
crystallizing in the rock salt structure with random distribution of Li and Fe
ions, have been studied by synchrotron X-ray diffraction, 57Fe M\"ossbauer
spectroscopy and electrical resistance measurements at pressures up to 100 GPa
using diam... | 1709.09680v1 |
2018-03-24 | Ion implantation in nanodiamonds: size effect and energy dependence | Nanoparticles are ubiquitous in nature and are increasingly important for
technology. They are subject to bombardment by ionizing radiation in a diverse
range of environments. In particular, nanodiamonds represent a variety of
nanoparticles of significant fundamental and applied interest. Here we present
a combined exp... | 1803.09081v1 |
2020-09-14 | Memristive control of mutual SHNO synchronization for neuromorphic computing | Synchronization of large spin Hall nano-oscillators (SHNO) arrays is an
appealing approach toward ultra-fast non-conventional computing based on
nanoscale coupled oscillator networks. However, for large arrays, interfacing
to the network, tuning its individual oscillators, their coupling, and
providing built-in memory ... | 2009.06594v1 |
2022-02-09 | Electron-Electron Interaction and Weak Antilocalization Effect in a Transition Metal Dichalcogenide Superconductor | In disordered transition-metal dichalcogenide (TMD) superconductor, both the
strong spin-orbit coupling (SOC) and disorder show remarkable effects on
superconductivity. However, the features of SOC and disorder were rarely
detected directly. Here we report the quantum transport behaviors arising from
the interplay of S... | 2202.04338v1 |
2016-03-21 | Measurement of Characteristic Impedance of Silicon Fiber Sheet based readout strips panel for RPC detector in INO | The India based Neutrino Observatory (INO) is a mega science project of
India, which is going to use near about 30, 000 Resistive Plate Chambers (RPC)
as active detector elements for the study of atmospheric neutrino oscillations.
Each RPC detector will consist of two orthogonally placed readout strips panel
for pickin... | 1603.06334v1 |
2017-04-18 | Extruded Mg based hybrid composite alloys studied by longitudinal impression creep | The creep behaviour of a creep-resistant AE42 magnesium alloy reinforced with
Saffil short fibres and SiC particulates in various combinations has been
examined in the longitudinal direction, i.e., the plane containing random fibre
orientation was parallel to the loading direction, in the temperature range of
175-300 C... | 1704.06563v2 |
2018-08-12 | High-pressure polymorphism of BaFe2Se3 | BaFe2Se3 is a potential superconductor material exhibiting transition at 11 K
and ambient pressure. Here we extended the structural and performed electrical
resistivity measurements on this compound up to 51 GPa and 20 GPa,
respectively, in order to distinguish if the superconductivity in this sample
is intrinsic to th... | 1808.03952v1 |
2019-03-14 | Electric Switching of the Charge-Density-Wave and Normal Metallic Phases in Tantalum Disulfide Thin-Film Devices | We report on switching among three charge-density-wave phases - commensurate,
nearly commensurate, incommensurate - and the high-temperature normal metallic
phase in thin-film 1T-TaS2 devices induced by application of an in-plane
electric field. The electric switching among all phases has been achieved over
a wide temp... | 1903.06050v1 |
2015-06-26 | Negative Differential Resistance in Boron Nitride Graphene Heterostructures: Physical Mechanisms and Size Scaling Analysis | Hexagonal boron nitride (hBN) is drawing increasing attention as an insulator
and substrate material to develop next generation graphene-based electronic
devices. In this paper, we investigate the quantum transport in
heterostructures consisting of a few atomic layers thick hBN film sandwiched
between graphene nanoribb... | 1506.08207v1 |
2015-07-02 | Massive $2$-form field and holographic ferromagnetic phase transition | In this paper, we investigate in some detail the holographic ferromagnetic
phase transition in an AdS${_4}$ black brane background by introducing a
massive 2-form field coupled to the Maxwell field strength in the bulk. In the
two probe limits, one is to neglect the back reaction of the 2-form field to
the background g... | 1507.00546v2 |
2018-12-31 | Growth, Characterization and High Field Magneto-Conductivity of Co0.1Bi2Se3 Topological Insulator | We report the crystal growth as well as transport properties of Co added
Bi2Se3 single crystals. The values of the lattice parameters a and b for Co
added sample were observed to increase as compared to the pure Bi2Se3. The
Raman spectroscopy displayed higher Raman shift of corresponding vibrational
modes for Co0.1Bi2S... | 1812.11713v1 |
2019-11-28 | Low-friction, wear-resistant, and electrically homogeneous multilayer graphene grown by chemical vapor deposition on molybdenum | Chemical vapour deposition (CVD) is a promising method for producing
large-scale graphene (Gr). Nevertheless, microscopic inhomogeneity of Gr grown
on traditional metal substrates such as copper or nickel results in a spatial
variation of Gr properties due to long wrinkles formed when the metal substrate
shrinks during... | 1911.12653v1 |
2021-02-23 | Strain-tuning of nematicity and superconductivity in single crystals of FeSe | Strain is a powerful experimental tool to explore new electronic states and
understand unconventional superconductivity. Here, we investigate the effect of
uniaxial strain on the nematic and superconducting phase of single crystal FeSe
using magnetotransport measurements. We find that the resistivity response to
the st... | 2102.11984v1 |
2021-02-24 | Calibration of manganin pressure gauge for diamond-anvil cells | Pressure calibration for most diamond-anvil cell (DAC) experiments is mainly
based on the ruby scale, which is key to implement this powerful tool for
high-pressure study. However, the ruby scale can often hardly be used for
programmably-controlled DAC devices, especially the piezoelectric-driving
cells, where a contin... | 2102.12125v1 |
2021-03-19 | A Robust nitridation technique for fabrication of disordered superconducting TiN thin films featuring phase slip events | Disorder induced phase slip (PS) events appearing in the current voltage
characteristics (IVCs) are reported for two-dimensional TiN thin films produced
by a robust substrate mediated nitridation technique. Here, high temperature
annealing of Ti/Si3N4 based metal/substrate assembly is the key to produce
majority phase ... | 2103.10751v2 |
2021-07-22 | Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements | Inter-terminal capacitances (ITCs) have major influence on the dynamic
performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is
required in order to perform accurate and predictive compact model simulations
of their dynamic performance. Since commercial SiC MOSFETs are capable of
operating in a w... | 2107.10408v1 |
2021-07-24 | Anomalous Nernst thermopower and giant magnetostriction in microwave synthesized La0.5Sr0.5CoO3 | Ferromagnetic metallic oxides have potential applications in spincaloric
devices which utilize the spin property of charge carriers for interconversion
of heat and electricity through the spin Seebeck or the anomalous Nernst effect
or both. In this work, we synthesized polycrystalline La0.5S0.5CoO3 by
microwave irradia... | 2107.11535v1 |
2022-01-15 | Fabrication and micro-Raman spectroscopy of arrays of copper phthalocyanine molecular-magnet microdisks | Phthalocyanines as organic semiconductors and molecular magnets provide
plenty of industrial or high-tech applications from dyes and pigments up to gas
sensors, molecular electronics, spintronics and quantum computing. Copper
phthalocyanine (CuPc) belongs among the most used phthalocyanines, typically in
the form of po... | 2201.08235v1 |
2022-07-06 | Mechanism of the Resistivity Switching Induced by the Joule Heating in Crystalline NbO$_2$ | Recently the memristive electrical transport properties in NbO$_2$ have
attracted much attention for their promising application to the neuromorphic
computation. At the center of debates is whether the metal-to-insulator
transition (MIT) originates from the structural distortion (Peierls) or the
electron correlation (M... | 2207.02682v2 |
2022-12-13 | Deep multilevel wet etching of fused silica glass microstructures in BOE solution | Fused silica glass is a material of choice for micromechanical, microfluidic,
and optical devices due to its ultimate chemical resistance, optical,
electrical, and mechanical performance. Wet etching in hydrofluoric solutions
especially a buffered oxide etching (BOE) solution is still the key method for
fabricating fus... | 2212.06699v1 |
2023-03-02 | Evolution of complex magnetic phases and metal-insulator transition through Nb substitution in La$_{0.5}$Sr$_{0.5}$Co$_{1-x}$Nb$_x$O$_3$ | We report the evolution of structural, magnetic, transport, and electronic
properties of bulk polycrystalline La$_{0.5}$Sr$_{0.5}$Co$_{1-x}$Nb$_x$O$_3$
($x =$ 0.025--0.25) samples. The Rietveld refinement of the x-ray diffraction
patterns with R$\bar3$c space group reveals that the lattice parameters and
rhombohedral d... | 2303.01108v1 |
2023-10-18 | Electrically-driven amplification of terahertz acoustic waves in graphene | In graphene devices, the electronic drift velocity can easily exceed the
speed of sound in the material at moderate current biases. Under this
condition, the electronic system can efficiently amplify acoustic phonons,
leading to the exponential growth of sound waves in the direction of the
carrier flow. Here, we demons... | 2310.12225v1 |
2024-04-24 | Structural investigation of the quasi-one-dimensional topological insulator Bi$_4$I$_4$ | The bismuth-halide Bi$_4$I$_4$ undergoes a structural transition around
$T_P\sim 300$K, which separates a high-temperature $\beta$ phase ($T>T_P$) from
a low-temperature $\alpha$ phase ($T<T_P$). $\alpha$ and $\beta$ phases are
suggested to host electronic band structures with distinct topological
classifications. Rapi... | 2404.16194v1 |
1998-12-22 | Theory of Colossal Magnetoresistance in Doped Manganites | The exchange interaction of polaronic carriers with localized spins leads to
a ferromagnetic/paramagnetic transition in doped charge-transfer insulators
with strong electron-phonon coupling. The relative strength of the exchange and
electron-phonon interactions determines whether the transition is first or
second order... | 9812355v1 |
1999-02-22 | Hall-effect in LuNi_2B_2C and YNi_2B_2C borocarbides: a comparative study | The Hall effect in LuNi_2B_2C and YNi_2B_2C borocarbides has been
investigated in normal and superconducting mixed states. The Hall resistivity
rho_{xy} for both compounds is negative in the normal as well as in the mixed
state and has no sign reversal below T_c typical for high-T_c superconductors.
In the mixed state ... | 9902299v1 |
2000-07-21 | Effect of γ-irradiation on superconductivity in polycrystalline YBa_{2}Cu_{3}O_{7-δ} | A bulk polycrystalline sample of YBa_{2}Cu_{3}O_{7-\delta} (\delta \approx
0.1) has been irradiated by \gamma-rays with ^{60}Co source. Non-monotonic
behavior of T_c (defined as the temperature at which normal resistance is
halved) with increasing irradiation dose \Phi (up to about 220 MR) is observed:
T_c decreases at... | 0007345v1 |
2004-08-13 | The effect of oxygen stoichiometry on electrical transport and magnetic properties of La0.9Te0.1MnOy | The effect of the variation of oxygen content on structural, magnetic and
transport properties in the electron-doped manganites La0.9Te0.1MnOy has been
investigated. All samples show a rhombohedral structure with the space group .
The Curie temperature decreases and the paramagnetic-ferromagnetic (PM-FM)
transition bec... | 0408302v1 |
2007-09-14 | Crystallography, magnetic susceptibility, heat capacity, and electrical resistivity of heavy fermion LiV$_2$O$_4$ single crystals grown using a self-flux technique | Magnetically pure spinel compound ${\rm LiV_2O_4}$ is a rare $d$-electron
heavy fermion. Measurements on single crystals are needed to clarify the
mechanism for the heavy fermion behavior in the pure material. In addition, it
is known that small concentrations ($< 1$ mol%) of magnetic defects in the
structure strongly ... | 0709.2387v3 |
2009-08-26 | On the strong impact of doping in the triangular antiferromagnet CuCrO2 | Electronic band structure calculations using the augmented spherical wave
method have been performed for CuCrO2. For this antiferromagnetic (T_N = 24 K)
semiconductor crystallizing in the delafossite structure, it is found that the
valence band maximum is mainly due to the t_2g orbitals of Cr^3+ and that spin
polarizat... | 0908.3828v1 |
2009-12-02 | Magnetotransport of La0.70ca0.3-xsrxmno3 (Ag): A Potential Room Temperature Bolometer and Magnetic Sensor | Here we report the optimized magneto-transport properties of polycrystalline
La0.70Ca0.3-xSrxMnO3 and their composites with Ag. The optimization was carried
out by varying the Sr and Ag contents simultaneously to achieve large
temperature coefficient of resistance (TCR) as well as low field
magneto-resistance (MR) at r... | 0912.0347v2 |
2012-08-16 | Gate tunable quantum transport in double layer graphene | We analyze the effect of screening provided by the additional graphene layer
in double layer graphene heterostructures (DLGs) on transport characteristics
of DLG devices in the metallic regime. The effect of gate-tunable charge
density in the additional layer is two-fold: it provides screening of the
long-range potenti... | 1208.3470v2 |
2012-10-20 | Tunable spin reorientation transition and magnetocaloric effect in Sm0.7-xLaxSr0.3MnO3 series | We report electrical resistivity, magnetic and magnetocaloric properties in
Sm0.7-xLaxSr0.3MnO3 series for x= 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.65, and
0.7. All the compounds show second order paramagnetic to ferromagnetic
transition at T = Tc which is tunable anywhere between 83 K and 373 K with a
proper choice of th... | 1210.5595v1 |
2012-11-27 | Anisotropic Impurity-States, Quasiparticle Scattering and Nematic Transport in Underdoped Ca(Fe1-xCox)2As2 | Iron-based high temperature superconductivity develops when the `parent'
antiferromagnetic/orthorhombic phase is suppressed, typically by introduction
of dopant atoms. But their impact on atomic-scale electronic structure, while
in theory quite complex, is unknown experimentally. What is known is that a
strong transpor... | 1211.6454v1 |
2013-05-16 | Different routes to pressure-induced volume collapse transitions in gadolinium and terbium metals | The sudden decrease in molar volume exhibited by most lanthanides under high
pressure is often attributed to changes in the degree of localization of their
4f-electrons. We give evidence, based on electrical resistivity measurements of
dilute Y(Gd) and Y(Tb) alloys to 120 GPa, that the volume collapse transitions
in Gd... | 1305.3852v4 |
2014-04-09 | Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2 | The material termed three-dimensional (3D) Dirac semimetal has attracted
great interests recently, since it is an electronic analogue to two-dimensional
graphene. Starting from this novel phase, various topologically distinct phases
may be obtained, such as topological insulator, Weyl semimetal, quantum spin
Hall insul... | 1404.2557v3 |
2014-04-15 | Formation of a topological non-Fermi liquid in MnSi | Fermi liquid theory provides a remarkably powerful framework for the
description of the conduction electrons in metals and their ordering phenomena,
such as superconductivity, ferromagnetism, and spin- and charge-density-wave
order. A different class of ordering phenomena of great interest concerns spin
configurations ... | 1404.4050v1 |
2014-09-12 | Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator | A three-dimensional (3D) topological insulator (TI) is a quantum state of
matter with a gapped insulating bulk yet a conducting surface hosting
topologically-protected gapless surface states. One of the most distinct
electronic transport signatures predicted for such topological surface states
(TSS) is a well-defined h... | 1409.3778v2 |
2014-12-23 | Magnetic and structural transitions in La$_{0.4}$Na$_{0.6}$Fe$_2$As$_2$ single crystals | La$_{0.4}$Na$_{0.6}$Fe$_2$As$_2$ single crystals have been grown out of an
NaAs flux in an alumina crucible and characterized by measuring magnetic
susceptibility, electrical resistivity, specific heat, as well as single
crystal x-ray and neutron diffraction. La$_{0.4}$Na$_{0.6}$Fe$_2$As$_2$ single
crystals show a stru... | 1412.7447v1 |
2015-01-08 | Structure and bonding in amorphous iron carbide thin films | We investigate the amorphous structure, chemical bonding, and electrical
properties of magnetron sputtered Fe1-xCx (0.21<x<0.72) thin films. X-ray,
electron diffraction and transmission electron microscopy show that the Fe1-xCx
films are amorphous nanocomposites, consisting of a two-phase domain structure
with Fe-rich ... | 1501.01839v1 |
2015-09-09 | Controlling the Electrical Properties of Undoped and Ta-doped TiO2 Polycrystalline Films via Ultra-Fast Annealing Treatments | We present a study on the crystallization process of undoped and Ta doped
TiO2 amorphous thin films. In particular, the effect of ultra-fast annealing
treatments in environments characterized by different oxygen concentrations is
investigated via in-situ resistance measurements. The accurate examination of
the key para... | 1509.02744v1 |
2016-10-14 | rHARM: Accretion and Ejection in Resistive GR-MHD | Turbulent magnetic diffusivity plays an important role for accretion disks
and the launching of disk winds. We have implemented magnetic diffusivity,
respective resistivity in the general relativistic MHD code HARM. This paper
describes the theoretical background of our implementation, its numerical
realization, our nu... | 1610.04445v1 |
2016-10-26 | Doping of Ga in antiferromagnetic semiconductor alpha-Cr2O3oxide and its effects on modified magnetic and electronic properties | The samples of Ga doped Cr2O3 oxide have been prepared using chemical
co-precipitation route. X-ray diffraction pattern and Raman spectra have
confirmed rhombohedral crystal structure with space group R3-C. Magnetic
measurement has indicated the dilution of antiferromagnetic (AFM) spin order in
Ga doped alpha-Cr2O3 sys... | 1610.08426v1 |
2018-02-21 | Multi-Terminal Memtransistors from Polycrystalline Monolayer MoS2 | In the last decade, a 2-terminal passive circuit element called a memristor
has been developed for non-volatile resistive random access memory and has more
recently shown promise for neuromorphic computing. Compared to flash memory,
memristors have higher endurance, multi-bit data storage, and faster read/write
times. ... | 1802.07783v1 |
2019-02-20 | Effect of the temperature and magnetic field induced martensitic transformation in bulk Fe$_{45}$Mn$_{26}$Ga$_{29}$ alloy on its electronic structure and physical properties | Effect of the temperature and magnetic field induced martensitic
transformation (MT) on the electronic structure and some physical properties of
bulk Fe$_{45.2}$Mn$_{25.9}$Ga$_{28.9}$ Heusler alloy has been investigated.
{According to the experimental results of DSC, magnetic and transport
measurements direct and rever... | 1902.07462v1 |
2020-02-04 | Single-defect Memristor in MoS$_2$ Atomic-layer | Non-volatile resistive switching, also known as memristor effect in two
terminal devices, has emerged as one of the most important components in the
ongoing development of high-density information storage, brain-inspired
computing, and reconfigurable systems. Recently, the unexpected discovery of
memristor effect in at... | 2002.01574v1 |
2020-04-07 | Temperature dependence of transport mechanisms in organic multiferroic tunnel junctions | Organic multiferroic tunnel junctions (OMFTJs) with multi-resistance states
have been proposed and drawn intensive interests due to their potential
applications, for examples of memristor and spintronics based synapse devices.
The ferroelectric control of spin-polarization at ferromagnet
(FM)/ferroelectric organic (FE-... | 2004.03284v1 |
2020-09-16 | High Field Magneto-Transport of Mixed Topological Insulators Bi2Se3-xTex (x = 0, 1, 2 & 3) | The article comprises structural, microstructural, and physical properties
analysis of Bi2Se3-xTex (x= 0, 1, 2 and 3) mixed topological insulator (MTI)
single crystals. All the crystals were grown through a well-optimized
solid-state reaction route via the self-flux method. These MTI are well
characterized through XRD ... | 2009.07757v1 |
2016-03-05 | Development and characterization of single gap glass RPC | India-based Neutrino Observatory (INO) facility is going to have a 50 kton
magnetized Iron CALorimeter (ICAL) detector for precision measurements of
neutrino oscillations using atmospheric neutrinos. The proposed ICAL detector
will be a stack of magnetized iron plates (acting as target material)
interleaved with glass ... | 1603.01719v5 |
2017-08-08 | High Surface Conductivity of Fermi Arc Electrons in Weyl semimetals | Weyl semimetals (WSMs), a new type of topological condensed matter, are
currently attracting great interest due to their unusual electronic states and
intriguing transport properties such as chiral anomaly induced negative
magnetoresistance, a semi--quantized anomalous Hall effect and the debated
chiral magnetic effect... | 1708.02415v1 |
2019-08-21 | Half-metallic ferromagnetism and Ru-induced localization in quaternary Heusler alloy CoRuMnSi | We report a combined theoretical and experimental investigation of
half-metallic ferromagnetism in equiatomic quaternary Heusler alloy CoRuMnSi.
Room temperature XRD analysis reveals that the alloy crystallizes in L21
disorder instead of pristine Y-type structure due to 50% swap disorder between
the tetrahedral sites, ... | 1908.07804v1 |
2012-03-10 | How local is the Phantom Force? | The phantom force is an apparently repulsive force, which can dominate the
atomic contrast of an AFM image when a tunneling current is present. We
described this effect with a simple resistive model, in which the tunneling
current causes a voltage drop at the sample area underneath the probe tip.
Because tunneling is a... | 1203.2258v1 |
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