publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2012-02-14 | Precision comparison of the quantum Hall effect in graphene and gallium arsenide | The half-integer quantum Hall effect in epitaxial graphene is compared with
high precision to the well known integer effect in a GaAs/AlGaAs
heterostructure. We find no difference between the quantised resistance values
within the relative standard uncertainty of our measurement of $8.7\times
10^{-11}$. The result plac... | 1202.2985v1 |
2012-02-14 | Pressure suppression of unconventional charge-density-wave state in PrRu4P12 studied by optical conductivity | Optical conductivity s(w) of PrRu4P12 has been studied under high pressure to
14 GPa, at low temperatures to 8 K, and at photon energies 12 meV-1.1 eV. The
energy gap in s(w) at ambient pressure, caused by a metal-insulator transition
due to an unconventional charge-density-wave formation at 63 K, is gradually
filled i... | 1202.3007v3 |
2012-02-16 | Approximate strange metallic behavior in AdS | We show for unit dynamical exponent, $z=1$, the appearance of the Fermi
liquid and non-Fermi liquid behavior as we tune the charge density and the
magnetic field in 3+1 dimensional field theory using the gauge-gravity duality.
There exists an upturn behavior of the resistivity only along the direction
perpendicular to ... | 1202.3555v1 |
2012-04-23 | Cyclopentadienyl-Benzene Based Sandwich Molecular Wires Showing Efficient Spin Filtering, Negative Differential Resistance, and Pressure Induced Electronic Transitions | Using density functional theory, we investigate TM-cyclopentadienyl-benzene
sandwich molecular wires (SMWs) which are composites of TM-cyclopentadienyl and
TM-benzene wires (TM = transition metal (V, Fe)). All the SMWs are found to be
highly stable ferromagnetic half-metals, showing spin switching behavior.
Transport c... | 1204.5047v1 |
2012-05-17 | Microwave heating-induced DC magnetic flux penetration in YBa$_{2}$Cu$_{3}$O$_{7-δ}$ superconducting thin films | The magneto-optical imaging technique is used to visualize the penetration of
the magnetic induction in YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ thin films during
surface resistance measurements. The in-situ surface resistance measurements
were performed at 7 GHz using the dielectric resonator method. When only the
microwave ma... | 1205.3962v1 |
2012-07-04 | Kondo-like behavior near the metal-to-insulator transition of nano-scale granular aluminum | We show that the normal state transport properties of nano-scale granular
Aluminum films, near the metal to insulator transition, present striking
similarities with those of Kondo systems. Those include a negative
magneto-resistance, a minimum of resistance R at a temperature Tm in metallic
films, a logarithmic rise at... | 1207.0970v3 |
2012-07-19 | Simulation Studies of Charge Transport on Resistive Structures in Gaseous Ionization Detectors | We developed a tool for the simulation of charge transport on a conducting
plate of finite dimensions. This tool is named Chani. Main motivation of
developing Chani was to provide a tool for the optimization of the dimensions
and resistivity of the anode electrodes in spark-protected Micropattern Gaseous
Detectors (MPG... | 1207.4585v1 |
2012-07-20 | Multi-Band Exotic Superconductivity in the New Superconductor Bi4O4S3 | Resistivity, Hall effect and magnetization have been investigated on the new
superconductor Bi4O4S3. A weak insulating behavior has been induced in the
normal state when the superconductivity is suppressed. Hall effect measurements
illustrate clearly a multiband feature dominated by electron charge carriers,
which is f... | 1207.4955v1 |
2012-08-14 | Superconductivity in Bismuth Oxysulfide Bi4O4S3 | Bismuth oxysulfide Bi4O4S3, which has recently been claimed to be an exotic
superconductor (Tc = 4.5 K), was investigated by magnetic susceptibility and
electrical resistivity measurements as well as by electron probe microanalysis.
Single-phase Bi4O4S3 was successfully prepared by a high-pressure method, and
its latti... | 1208.2818v3 |
2012-08-15 | Double negative differential thermal resistance induced by the nonlinear on-site potentials | We study heat conduction through one-dimensional homogeneous lattices in the
presence of the nonlinear on-site potentials containing the bounded and
unbounded parts, and the harmonic interaction potential. We observe the
occurrence of double negative differential thermal resistance (NDTR), namely,
there exist two regio... | 1208.3008v1 |
2012-09-17 | Hair of astrophysical black holes | The "no hair" theorem is not applicable to black holes formed from collapse
of a rotating neutron star. Rotating neutron stars can self-produce particles
via vacuum breakdown forming a highly conducting plasma magnetosphere such that
magnetic field lines are effectively "frozen-in" the star both before and
during colla... | 1209.3785v1 |
2012-09-24 | Non-stationary Magnetic Microstructures in Stellar Thin Accretion Discs | We examine the morphology of magnetic structures in thin plasma accretion
discs, generalizing a stationary ideal MHD model to the time-dependent
visco-resistive case. Our analysis deals with small scale perturbations to a
central dipole-like magnetic field, which give rise -- as in the ideal case --
to the periodic mod... | 1209.5227v2 |
2012-09-29 | Contact induced spin relaxation in Hanle spin precession measurements | In the field of spintronics the "conductivity mismatch" problem remains an
important issue. Here the difference between the resistance of ferromagnetic
electrodes and a (high resistive) transport channel causes injected spins to be
backscattered into the leads and to lose their spin information. We study the
effect of ... | 1210.0093v1 |
2012-10-02 | Magnetic structure of Coronal Mass Ejections | We present several models of the magnetic structure of solar coronal mass
ejections (CMEs). First, we model CMEs as expanding force-free magnetic
structures. While keeping the internal magnetic field structure of the
stationary solutions, expansion leads to complicated internal velocities and
rotation, while the field ... | 1210.0918v1 |
2012-10-25 | The RPC-based proposal for the ATLAS forward muon trigger upgrade in view of super-LHC | The innermost station of the present ATLAS forward muon detector needs to be
upgraded for the super-LHC. We present a proposal to replace it with a
sandwiched detector composed of several layers of small-radius Monitored Drift
Tube chambers (sMDT) for precision tracking measurement and two stations of
multi-gap Resisti... | 1210.6728v1 |
2012-12-06 | The Reconstruction Algorithm Study of 2D Interpolating Resistive Readout Structure | Systematic investigations including both simulation and prototype tests have
been done about the interpolating resistive readout structure with GEM (Gaseous
Electron Multiplier) detector. From the simulation, we have a good knowledge of
the process of charges diffusion on the surface of the readout plane and
develop se... | 1212.1220v1 |
2012-12-12 | Metal-insulator transition in holography | We exhibit an interaction-driven metal-insulator quantum phase transition in
a holographic model. Use of a helical lattice enables us to break translation
invariance while preserving homogeneity. The metallic phase is characterized by
a sharp Drude peak and a d.c. resistivity that increases with temperature. In
the ins... | 1212.2998v2 |
2013-01-06 | Anomalous response to gate voltage application in mesoscopic LaAlO_3/SrTiO_3 devices | We report on resistivity and Hall measurements performed on a series of
narrow mesa devices fabricated from LaAlO_3/SrTiO_3 single interface
heterostructure with a bridge width range of 1.5-10 microns. Upon applying
back-gate voltage of the order of a few Volts, a strong increase in the sample
resistance (up to factor ... | 1301.1055v1 |
2013-04-22 | Stochastic Memristive Devices for Computing and Neuromorphic Applications | Nanoscale resistive switching devices (memristive devices or memristors) have
been studied for a number of applications ranging from non-volatile memory,
logic to neuromorphic systems. However a major challenge is to address the
potentially large variations in space and in time in these nanoscale devices.
Here we show ... | 1304.5993v1 |
2013-04-27 | Attacks and Countermeasures in Fingerprint Based Biometric Cryptosystems | We investigate implementations of biometric cryptosystems protecting
fingerprint templates (which are mostly based on the fuzzy vault scheme by
Juels and Sudan in 2002) with respect to the security they provide. We show
that attacks taking advantage of the system's false acceptance rate, i.e.
false-accept attacks, pose... | 1304.7386v1 |
2013-06-19 | Nematode Locomotion in Unconfined and Confined Fluids | The millimeter-long soil-dwelling nematode {\it C. elegans} propels itself by
producing undulations that propagate along its body and turns by assuming
highly curved shapes. According to our recent study [PLoS ONE \textbf{7},
e40121 (2012)] all these postures can be accurately described by a
piecewise-harmonic-curvatur... | 1306.4423v1 |
2013-07-08 | Effects of the non-uniform initial environment and the guide field on the plasmoid instability | Effects of non-uniform initial mass density and temperature on the plasmoid
instability are studied via 2.5-dimensional resistive magnetohydrodynamic(MHD)
simulations. Our results indicate that the development of the plasmoid
instability is apparently prevented when the initial plasma density at the
center of the curre... | 1307.1963v1 |
2013-08-05 | Explosive reconnection of double tearing modes in relativistic plasmas: application to the Crab flares | Magnetic reconnection associated to the double tearing mode (DTM) is
investigated by means of resistive relativistic magnetohydrodynamic (RRMHD)
simulations. A linearly unstable double current sheet system in two dimensional
cartesian geometry is considered. For initial perturbations of large enough
longitudinal wavele... | 1308.0906v1 |
2014-02-05 | Thermal-inertial effects on magnetic reconnection in relativistic pair plasmas | The magnetic reconnection process is studied in relativistic pair plasmas
when the thermal and inertial properties of the magnetohydrodynamical fluid are
included. We find that in both Sweet-Parker and Petschek relativistic scenarios
there is an increase of the reconnection rate owing to the thermal-inertial
effects, b... | 1402.1115v2 |
2014-02-14 | Unification of the Pressure and Composition Dependence of Superconductivity in Ru substituted BaFe2As2 | Temperature dependent high pressure electrical resistivity studies has been
carried out on Ba(Fe_{1-x}Ru_{x})_{2}As_{2} single crystals with x = 0.12, 0.26
and 0.35, which correspond to under doped, optimally doped and over doped
composition regimes respectively. The evolution of structural/magnetic
(T_{S-M}) and super... | 1402.3387v1 |
2014-03-24 | Physics of Fully Depleted CCDs | In this work we present simple, physics-based models for two effects that
have been noted in the fully depleted CCDs that are presently used in the Dark
Energy Survey Camera. The first effect is the observation that the point-spread
function increases slightly with the signal level. This is explained by
considering the... | 1403.6185v1 |
2014-05-25 | Negative differential resistance in graphene-based ballistic field effect transistor with oblique top gate | Negative differential resistance (NDR) with room temperature
peak-valley-ratio of 8 has been observed in a ballistic field-effect-transistor
(FET) based on graphene, having an oblique top gate. Graphene FETs with a top
gate inclination angle of 45 degrees and a drain-source distance of 400 nm were
fabricated on a chip ... | 1405.6407v1 |
2014-06-26 | The value of monitoring to control evolving populations | Populations can evolve in order to adapt to external changes. The capacity to
evolve and adapt makes successful treatment of infectious diseases and cancer
difficult. Indeed, therapy resistance has quickly become a key challenge for
global health. Therefore, ideas of how to control evolving populations in order
to over... | 1406.6957v1 |
2014-07-28 | Critical point for the CAF-F phase transition at charge neutrality in bilayer graphene | We report on magneto-transport measurements up to 30 T performed on a bilayer
graphene Hall bar, enclosed by two thin hexagonal boron nitride flakes. Our
high mobility sample exhibits an insulating state at neutrality point which
evolves into a metallic phase when a strong in-plane field is applied, as
expected for a t... | 1407.7425v1 |
2014-11-28 | The tearing mode instability of thin current sheets: the transition to fast reconnection in the presence of viscosity | This paper studies the growth rate of reconnection instabilities in thin
current sheets in the presence of both resistivity and viscosity. In a previous
paper, Pucci and Velli (2014), it was argued that at sufficiently high
Lundquist number S it is impossible to form current sheets with aspect ratios
L/a which scale as... | 1412.0047v2 |
2014-12-02 | Two-stage magnetic-field-tuned superconductor-insulator transition in underdoped La$_{2-x}$Sr$_{x}$CuO$_{4}$ | In the underdoped pseudogap regime of cuprate superconductors, the normal
state is commonly probed by applying a magnetic field ($H$). However, the
nature of the $H$-induced resistive state has been the subject of a long-term
debate, and clear evidence for a zero-temperature ($T=0$) $H$-tuned
superconductor-insulator t... | 1412.1134v1 |
2015-01-15 | Non-ergodic metallic and insulating phases of Josephson junction chains | Strictly speaking the laws of the conventional Statistical Physics, based on
the Equipartition Postulate and Ergodicity Hypothesis, apply only in the
presence of a heat bath. Until recently this restriction was not important for
real physical systems: a weak coupling with the bath was believed to be
sufficient. However... | 1501.03853v1 |
2015-02-17 | Variations of magnetic properties of UGa2 under pressure | Electrical resistivity \rho(T) of the 5f ferromagnet UGa2 was investigated
for single-crystal samples as a function of pressure and magnetic field. The
Curie temperature monotonously increases from T$_{C}$ = 124 K under
quasi-hydrostatic pressure up to 154 K at p = 14.2 GPa, after which it turns
down steeply and reache... | 1502.04948v1 |
2015-08-17 | Suppression of Nonmagnetic Insulating State by Application of Pressure in Mineral Tetrahedrite Cu$_{12}$Sb$_{4}$S$_{13}$ | The mineral tetrahedrite Cu$_{12}$Sb$_{4}$S$_{13}$ exhibits a first-order
metal--insulator transition (MIT) at $T_{\rm MI}$ = 85 K and ambient pressure.
We measured the $^{63}$Cu-NMR at ambient pressure and the resistivity and
magnetic susceptibility at high pressures. $^{63}$Cu-NMR results indicate a
nonmagnetic insul... | 1508.03933v1 |
2015-09-25 | Turbulent Reconnection in Relativistic Plasmas And Effects of Compressibility | We report turbulence effects on magnetic reconnection in relativistic plasmas
using 3-dimensional relativistic resistive magnetohydrodynamics simulations. We
found reconnection rate became independent of the plasma resistivity due to
turbulence effects similarly to non-relativistic cases. We also found
compressible tur... | 1509.07703v2 |
2015-09-26 | Destroying coherence in high temperature superconductors with current flow | The loss of single-particle coherence going from the superconducting state to
the normal state in underdoped cuprates is a dramatic effect that has yet to be
understood. Here, we address this issue by performing angle resolved
photoemission spectroscopy (ARPES) measurements in the presence of a transport
current. We fi... | 1509.07937v3 |
2015-11-11 | The Effect of Large Scale Magnetic Field on Outflow in ADAFs: an Odd Symmetry Configuration | We construct self-similar inflow-outflow solutions for a hot
viscous-resistive accretion flow with large scale magnetic fields that have odd
symmetry with respect to the equatorial plane in $B_\theta$, and even symmetry
in $B_r$ and $B_\phi$. Following previous authors, we also assume that the
polar velocity $v_\theta$... | 1511.04366v1 |
2015-12-08 | On hybrid circuits exploiting thermistive properties of slime mould | Slime mould Physarum polycephalum is a single cell visible by unaided eye.
Let the slime mould span two electrodes with a single protoplasmic tube: if the
tube is heated to approximately 40{\deg}C, the electrical resistance of the
protoplasmic tube increases from 3 M{\Omega} to approximatively 10'000
M{\Omega}. The org... | 1512.02483v1 |
2015-12-11 | Dynamical Decentralized Voltage Control of Multi-Terminal HVDC Grids | High-voltage direct current (HVDC) is a commonly used technology for
long-distance electric power transmission, mainly due to its low resistive
losses. When connecting multiple HVDC lines into a multi-terminal HVDC (MTDC)
system, several challenges arise. To ensure safe and efficient operation of
MTDC systems, the volt... | 1512.03838v2 |
2016-01-06 | Transfer Printing of CVD Graphene FETs on Patterned Substrates | We describe a simple and scalable method for the transfer of CVD graphene for
the fabrication of field effect transistors. This is a dry process that uses a
modified RCA cleaning step to improve the surface quality. In contrast to
conventional fabrication routes where lithographic steps are performed after
the transfer... | 1601.01224v1 |
2016-01-25 | A Perceptually Motivated Filter Bank with Perfect Reconstruction for Audio Signal Processing | Many audio applications rely on filter banks (FBs) to analyze, process, and
re-synthesize sounds. To approximate the auditory frequency resolution in the
signal chain, some applications rely on perceptually motivated FBs, the
gammatone FB being a popular example. However, most perceptually motivated FBs
only allow part... | 1601.06652v1 |
2016-04-06 | The Raspberry model for protein-like particles: ellipsoids and confinement in cylindrical pores | The study of protein mass transport via atomistic simulation requires time
and length scales beyond the computational capabilities of modern computer
systems. The raspberry model for colloidal particles in combination with the
mesoscopic hydrodynamic method of lattice Boltzmann facilitates coarse-grained
simulations th... | 1604.01829v3 |
2016-04-29 | Superconductivity and abnormal pressure effect in Sr0.5La0.5FBiSe2 superconductor | Through the solid state reaction method, we synthesized a new BiSe2-based
superconductor Sr0:5La0:5FBiSe2 with superconducting transition temperature
Tc?3.8 K. A strong diamagnetic signal below Tc in susceptibility ?(T) is
observed indicating the bulk nature of superconductivity. Different to most
BiS2-based compounds ... | 1604.08686v1 |
2016-05-04 | Eco-friendly gas mixtures for Resistive Plate Chambers based on Tetrafluoropropene and Helium | Due to the recent restrictions deriving from the application of the Kyoto
protocol, the main components of the gas mixtures presently used in the
Resistive Plate Chambers systems of the LHC experiments will be most probably
phased out of production in the coming years. Identifying possible replacements
with the adequat... | 1605.01691v1 |
2016-05-07 | Numerical study on the effect of design parameters and spacers on RPC signal and timing properties | Numerical calculations have been performed to understand the reason for the
observed non-uniform response of a Resistive Plate Chamber (RPC) in a few
critical regions such as near edge spacers and corners of the device. In this
context, the signal from a RPC due to the passage of muons through different
regions has bee... | 1605.02154v3 |
2016-05-26 | Preliminary results of Resistive Plate Chambers operated with eco-friendly gas mixtures for application in the CMS experiment | The operations of Resistive Plate Chambers in LHC experiments require
Fluorine based (F-based) gases for optimal performance. Recent European
regulations demand the use of environmentally unfriendly F-based gases to be
limited or banned. In view of the CMS experiment upgrade, several tests are
ongoing to measure the pe... | 1605.08172v1 |
2016-05-31 | First results of CMS RPC performance at 13 TeV | The muon spectrometer of the CMS (Compact Muon Solenoid) experiment at the
Large Hadron Collider (LHC) is equipped with a redundant system made of
Resistive Plate Chambers (RPCs) and Drift Tube (DT) chambers in the barrel, RPC
and Cathode Strip Chambers (CSCs) in the endcap region. In this paper, the
first results of t... | 1605.09521v3 |
2016-07-21 | Magnetocapacitance oscillations and thermoelectric effect in two-dimensional electron gas irradiated by microwaves | To study the influence of microwave irradiation on two-dimensional electrons,
we apply a method based on capacitance measurements in GaAs quantum well
samples where the gate covers a central part of the layer. We find that the
capacitance oscillations at high magnetic fields, caused by the oscillations of
thermodynamic... | 1607.06435v1 |
2016-08-01 | TorBricks: Blocking-Resistant Tor Bridge Distribution | Tor is currently the most popular network for anonymous Internet access. It
critically relies on volunteer nodes called bridges for relaying Internet
traffic when a user's ISP blocks connections to Tor. Unfortunately, current
methods for distributing bridges are vulnerable to malicious users who obtain
and block bridge... | 1608.00509v1 |
2016-10-03 | Beyond ideal magnetohydrodynamics: Resistive, reactive and relativistic plasmas | We develop a new framework for the modelling of charged fluid dynamics in
general relativity. The model, which builds on a recently developed variational
multi-fluid model for dissipative fluids, accounts for relevant effects like
the inertia of both charge currents and heat and, for mature systems, the
decoupling of s... | 1610.00449v1 |
2016-10-13 | Straintronic magneto-tunneling-junction based ternary content addressable memory | Straintronic magneto-tunneling junction (s-MTJ) switches, whose resistances
are controlled with voltage-generated strain in the magnetostrictive free layer
of the MTJ, are extremely energy-efficient switches that would dissipate a few
aJ of energy during switching. Unfortunately, they are also relatively
error-prone an... | 1610.03902v2 |
2016-10-17 | Topological quantum phase transition and superconductivity induced by pressure in the bismuth tellurohalide BiTeI | A pressure-induced topological quantum phase transition has been
theoretically predicted for the semiconductor BiTeI with giant Rashba spin
splitting. In this work, the evolution of the electrical transport properties
in BiTeI and BiTeBr is investigated under high pressure. The pressure-dependent
resistivity in a wide ... | 1610.05364v1 |
2016-11-29 | Sub 100nW volatile nano-metal-oxide memristor as synaptic-like encoder of neuronal spikes | Advanced neural interfaces mediate a bio-electronic link between the nervous
system and microelectronic devices, bearing great potential as innovative
therapy for various diseases. Spikes from a large number of neurons are
recorded leading to creation of big data that require on-line processing under
most stringent con... | 1611.09671v1 |
2016-12-21 | Magnetotransport studies of Superconducting Pr$_4$Fe$_2$As$_2$Te$_{1-x}$O$_4$ | We report a detailed study of the electrical transport properties of single
crystals of Pr$_4$Fe$_2$As$_2$Te$_{1-x}$O$_4$, a recently discovered iron-based
superconductor. Resistivity, Hall effect and magnetoresistance are measured in
a broad temperature range revealing the role of electrons as dominant charge
carriers... | 1612.07090v1 |
2016-12-23 | Strained graphene Hall bar | The effects of strain, induced by a Gaussian bump, on the magnetic field
dependent transport properties of a graphene Hall bar are investigated. The
numerical simulations are performed using both classical and quantum mechanical
transport theory and we found that both approaches exhibit similar
characteristic features.... | 1612.07995v1 |
2017-02-01 | Superzone gap formation and low lying crystal electric field levels in PrPd$_2$Ge$_2$ single crystal | The magnetocrystalline anisotropy exhibited in PrPd$_2$Ge$_2$ single crystal
has been investigated by measuring the magnetization, magnetic susceptibility,
electrical resistivity and heat capacity. PrPd$_2$Ge$_2$ crystallizes in the
well known ThCr$_2$Si$_2$\--type tetragonal structure. The antiferromagnetic
ordering i... | 1702.00220v1 |
2017-02-08 | Giant microwave-induced $B$-periodic magnetoresistance oscillations in a two-dimensional electron gas with a bridged-gate tunnel point contact | We have studied the magnetoresistance of the quantum point contact fabricated
on the high mobility two-dimensional electron gas (2DEG) exposed to microwave
irradiation. The resistance reveals giant $B$-periodic oscillations with the
relative amplitude $\Delta R/R$ of up to $700$\% resulting from the propagation
and int... | 1702.02309v1 |
2017-05-31 | An upper bound on transport | The linear growth of operators in local quantum systems leads to an effective
lightcone even if the system is non-relativistic. We show that consistency of
diffusive transport with this lightcone places an upper bound on the
diffusivity: $D \lesssim v^2 \tau_\text{eq}$. The operator growth velocity $v$
defines the ligh... | 1706.00019v2 |
2017-10-10 | Transport coefficients from QCD Kondo effect | We study the transport coefficients from the QCD Kondo effect in quark matter
which contains heavy quarks as impurity particles. We estimate the coupling
constant of the interaction between a light quark and a heavy quark at finite
density and temperature by using the renormalization group equation up to
two-loop order... | 1710.03434v2 |
2017-10-17 | Superconductivity of Cobalt in Thin Films | Due to competing long range ferromagnetic order, the transition metals Fe, Co
and Ni are not superconductors at ambient pressure. While superconductivity was
observed in a non-magnetic phase of Fe, stabilized under pressure, it is yet to
be discovered in Co and Ni under any experimental conditions. Here, we report
emer... | 1710.06114v1 |
2017-10-29 | Gauge Topological Nature of the Superconductor-Insulator Transition | It has long been believed that, at absolute zero, electrons can form only one
quantum coherent state, a superconductor. Yet, several two dimensional
superconducting systems were found to harbor the superinsulating state with
infinite resistance, a mirror image of superconductivity, and a metallic state
often referred t... | 1710.10575v2 |
2018-01-09 | Direct Detection of Ultralight Dark Matter via Astronomical Ephemeris | A novel idea of the direct detection to search for a ultralight dark matter
based on the interaction between the dark matter and a nucleon is proposed.
Solar system bodies feel the dark matter wind and it acts as a resistant force
opposing their motions. The astronomical ephemeris of solar system bodies is so
precise t... | 1801.02807v1 |
2018-01-09 | Flare particle acceleration in the interaction of twisted coronal flux ropes | The aim of this work is to investigate and characterise non-thermal particle
behaviour in a three-dimensional (3D) magnetohydrodynamical (MHD) model of
unstable multi-threaded flaring coronal loops. We have used a numerical scheme
which solves the relativistic guiding centre approximation to study the motion
of electro... | 1801.02907v1 |
2018-02-12 | First FBK Production of 50$μ$m Ultra-Fast Silicon Detectors | Fondazione Bruno Kessler (FBK, Trento, Italy) has recently delivered its
first 50 $\mu$m thick production of Ultra-Fast Silicon Detectors (UFSD), based
on the Low-Gain Avalanche Diode design. These sensors use high resistivity
Si-on-Si substrates, and have a variety of gain layer doping profiles and
designs based on Bo... | 1802.03988v2 |
2018-02-12 | A candidate Theory for the "Strange Metal" phase at Finite Energy Window | We propose a lattice model for strongly interacting electrons with the
potential to explain the main phenomenology of the strange metal phase in the
cuprate high temperature superconductors. Our model is motivated by the
recently developed "tetrahedron" rank-3 tensor model that mimics much of the
physics of the better-... | 1802.04293v2 |
2018-02-22 | Negative differential resistance in Van der Waals heterostructures due to moiré-induced spectral reconstruction | Formation of moir\'{e} superlattices is common in Van der Waals
heterostructures as a result of the mismatch between lattice constants and
misalignment of crystallographic directions of the constituent two-dimensional
crystals. We discuss theoretically electron transport in a Van der Waals
tunnelling transistor in whic... | 1802.08100v3 |
2018-04-10 | Development of Integration-Type Silicon-On-Insulator Monolithic Pixel Detectors by Using a Float Zone Silicon | In this paper, we describe the development of monolithic pixel detectors by
using a Silicon-on-Insulator (SOI) technology for X-ray and charged particle
applications. The detectors are based on a 0.2 {\mu}m CMOS fully depleted SOI
process (Lapis Semiconductor Co., Ltd). The SOI wafer consists of a thick
high-resistivit... | 1804.03338v1 |
2018-05-07 | Vacuum-dressed cavity magnetotransport of a 2D electron gas | We present a theory predicting how the linear magnetotransport of a
two-dimensional electron gas is modified by a passive electromagnetic cavity
resonator where no real photons are injected nor created. For a cavity photon
mode with in-plane linear polarization, the dc bulk magnetoresistivity of the
2D electron gas is ... | 1805.02623v2 |
2018-06-09 | Streamer studies in Resistive Plate Chambers | The present paper is meant as an update of the presentation given in a
previous Resistive Plate Chamber (RPC) workshop, aimed at finding an
eco-friendly gas mixture for streamer operation of RPCs. Indeed the streamer
working regime is still suitable for building large RPC systems dedicated to
low rate applications, suc... | 1806.03443v2 |
2018-09-04 | Linear Wave Propagation for Resistive Relativistic Magnetohydrodynamics | We present a linear mode analysis of the relativistic MHD equations in the
presence of finite electrical conductivity. Starting from the fully
relativistic covariant formulation, we derive the dispersion relation in the
limit of small linear perturbations. It is found that the system supports ten
wave modes which can b... | 1809.01115v1 |
2018-09-16 | Temperature-dependent transport measurements with Arduino | The current performances of single-board microcontrollers render them
attractive not only for basic applications but also for more elaborate
projects, amongst which physics teaching or research. In this article, we show
how temperature-dependent transport measurements can be performed using an
Arduino microcontroller, ... | 1809.08075v1 |
2018-09-27 | Impact of Integrated Circuit Packaging on Synaptic Dynamics of Memristive Devices | The memristor can be used as non volatile memory (NVM) and for emulating
neuron behavior. It has the ability to switch between low resistance $R_{on}$
and high resistance values $R_{off}$, and exhibit the synaptic dynamic
behaviour such as potentiation and depression. This paper presents a study on
potentiation and dep... | 1809.10434v1 |
2019-09-30 | Numerical simulation of magnetic reconnection around a black hole | We performed numerical simulations of general relativistic
magnetohydrodynamics with uniform resistivity to investigatethe occurrence of
magnetic reconnection in a split-monopole magnetic field around a Schwarzschild
black hole. We found that magnetic reconnection happens near the black hole at
its equatorial plane. Th... | 1909.13414v1 |
2014-08-01 | The linear tearing instability in three dimensional, toroidal gyrokinetic simulations | Linear gyro-kinetic simulations of the classical tearing mode in
three-dimensional toroidal geometry were performed using the global gyro
kinetic turbulence code, GKW . The results were benchmarked against a
cylindrical ideal MHD and analytical theory calculations. The stability, growth
rate and frequency of the mode w... | 1408.0112v1 |
2014-08-01 | Development of Multi-gap Resistive Plate Chamber (MRPC) for medical imaging | The low cost and high resolution Multi-gap Resistive Plate Chamber (MRPC)
opens up a new possibility to find an efficient alternative detector for the
Time of Flight (TOF) based Positron Emission Tomography, where the sensitivity
of the system depends largely on the time resolution of the detector. In a
layered structu... | 1408.0280v1 |
2014-08-17 | Quantum criticality in two dimensions and Marginal Fermi Liquid | Kinetic properties of a two dimensional model of fermions interacting with
antiferromagnetic spin excitations near the quantum critical point (QCP) are
considered. The temperature or doping are assumed to be sufficiently high, such
that the pseudogap does not appear. In contrast to standard spin-fermion
models, it is a... | 1408.3865v3 |
2017-03-29 | Illumination effect by visible continuous-wave laser on bulk 40 K-superconductors | Visible CW (continuous wave) -laser heating effects on the bulk
superconductors CeFeAsO0.65F0.35 and MgB2 with 1.5 mm thickness have been
investigated by measuring the temperature dependence of electrical resistivity.
Each compound shows a critical-temperature Tc reduction with increasing fluence
rate. At the normal st... | 1703.10270v1 |
2004-06-12 | Thermally-activated current transport in MgB_2 films | Thermally-activated flux flow (TAFF) resistivity above the irreversibility
field is reported for two different c-axis textured MgB_2 superconducting
films. Transport measurements at different perpendicular magnetic fields 0 < B
< 9 T and temperatures from 5 to 40K reveal TAFF Ohmic resistivity described by
the Arrheniu... | 0406294v1 |
2011-07-05 | Parametric oscillator based on non-linear vortex dynamics in low resistance magnetic tunnel junctions | Radiofrequency vortex spin-transfer oscillators based on magnetic tunnel
junctions with very low resistance area product were investigated. A high power
of excitations has been obtained characterized by a power spectral density
containing a very sharp peak at the fundamental frequency and a series of
harmonics. The obs... | 1107.0867v2 |
2013-12-02 | Robust superconductivity with large upper critical field in Nb2PdS5 | We report synthesis, structural details and complete superconducting
characterization of very recently discovered Nb2PdS5 new superconductor. The
synthesized compound is crystallized in mono-clinic structure. Bulk
superconductivity is seen in both magnetic susceptibility and electrical
resistivity measurements with sup... | 1312.0425v5 |
2013-12-12 | Pressure-induced superconductivity in EuFe2As2 without a quantum critical point: magnetotransport and upper critical field measurements under high pressure | Resistivity and Hall effect measurements of EuFe$_2$As$_2$ up to 3.2\,GPa
indicate no divergence of quasiparticle effective mass at the pressure
$P_\mathrm{c}$ where the magnetic and structural transition disappears. This is
corroborated by analysis of the temperature ($T$) dependence of the upper
critical field. $T$-l... | 1312.3380v1 |
2013-12-25 | Ambipolar Transport and Magneto-resistance Crossover in a Mott Insulator, Sr$_{2}$IrO$_{4}$ | Electric field effect (EFE) controlled magnetoelectric transport in thin
films of undoped and La-doped Sr$_{2}$IrO$_{4}$ (SIO) were investigated under
the action of ionic liquid gating. Despite large carrier density modulation,
the temperature dependent resistance measurements exhibit insulating behavior
in chemically ... | 1312.7015v2 |
2014-11-18 | Tunneling transport in a few monolayer-thick WS2/graphene heterojunction | This paper demonstrates the high-quality tunnel barrier characteristics and
layer number controlled tunnel resistance of a transition metal dichalcogenide
(TMD) measuring just a few monolayers in thickness. Investigation of vertical
transport in WS2 and MoS2 TMDs in graphene/TMD/metal heterostructures revealed
that WS2... | 1411.4714v2 |
2016-06-01 | Variation of transition temperatures and residual resistivity ratio in vapor-grown FeSe | The study of the iron-based superconductor FeSe has blossomed with the
availability of high quality single crystals, obtained through
flux/vapor-transport growth techniques below the structural transformation
temperature of its tetragonal phase, T~450 C. Here, we report on the variation
of sample morphology and propert... | 1606.00500v1 |
2016-06-14 | Effect of atomic disorder and Ce doping on superconductivity of Ca3Rh4Sn13: Electric transport properties under high pressure | We report the observation of a superconducting state below 8K coexistent with
a spin-glass state caused by atomic disorder in Ce substituted Ca3Rh4Sn13.
Measurements of specific heat, resistivity, and magnetism reveal the existence
of inhomogeneous superconductivity in samples doped with Ce with
superconducting critica... | 1606.04579v1 |
2017-01-19 | Spin-filtering in superconducting junction with the manganite interlayer | We report on the electronic transport and the impact of spin-filtering in
mesa-structures made of epitaxial thin films of cuprate superconductor
YBa2Cu3Ox(YBCO) and the manganite LaMnO3 (LMO) interlayer with the Au/Nb
counterelectrode. Ferromagnetic resonance measurements of heterostructure
Au/LMO/YBCO shows ferromagne... | 1701.05364v1 |
2017-01-27 | Control of superconductivity with a single ferromagnetic layer in niobium/erbium bilayers | Superconducting spintronics in hybrid superconductor/ferromagnet (S-F)
heterostructures provides an exciting potential new class of device. The
prototypical super-spintronic device is the superconducting spin-valve, where
the critical temperature, $T_c$, of the S-layer can be controlled by the
relative orientation of t... | 1701.08065v2 |
2017-11-08 | Mechanical characterization of disordered and anisotropic cellular monolayers | We consider a cellular monolayer, described using a vertex-based model, for
which cells form a spatially disordered array of convex polygons that tile the
plane. Equilibrium cell configurations are assumed to minimize a global energy
defined in terms of cell areas and perimeters; energy is dissipated via dynamic
area a... | 1711.02909v2 |
2017-11-21 | Strained graphene structures: from valleytronics to pressure sensing | Due to its strong bonds graphene can stretch up to 25% of its original size
without breaking. Furthermore, mechanical deformations lead to the generation
of pseudo-magnetic fields (PMF) that can exceed 300 T. The generated PMF has
opposite direction for electrons originating from different valleys. We show
that valley-... | 1711.07904v1 |
2017-12-12 | Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin-Chains | We present the appearance of negative differential resistance (NDR) in
spin-dependent electron transport through a few-atom spin-chain. A chain of
three antiferromagnetically coupled Fe atoms(Fe trimer) was positioned on a
Cu2N/Cu(100) surface and contacted with the spin-polarized tip of a scanning
tunneling microscope... | 1712.04213v1 |
2017-12-12 | Scaling Projections on Spin Transfer Torque Magnetic Tunnel Junctions | We investigate scaling of technologically relevant magnetic tunnel junction
devices in the trilayer and pentalayer configurations by varying the
cross-sectional area along the transverse direction using the non-equilibrium
Green's function spin transport formalism. We study the geometry dependence by
considering square... | 1712.04235v1 |
2017-12-14 | Conductivity of anisotropic inhomogeneous superconductors above critical temperature | We propose a model and derive analytical expressions for conductivity in
heterogeneous fully anisotropic conductors with ellipsoid superconducting
inclusions. This model and calculations are useful to analyze the observed
temperature dependence of conductivity anisotropy in various anisotropic
superconductors, where su... | 1712.05347v2 |
2017-12-16 | Mitigating Asymmetric Nonlinear Weight Update Effects in Hardware Neural Network based on Analog Resistive Synapse | Asymmetric nonlinear weight update is considered as one of the major
obstacles for realizing hardware neural networks based on analog resistive
synapses because it significantly compromises the online training capability.
This paper provides new solutions to this critical issue through
co-optimization with the hardware... | 1712.05895v1 |
2018-10-30 | Whole genome single nucleotide polymorphism genotyping of Staphylococcus aureus | Next-generation sequencing technology enables routine detection of bacterial
pathogens for clinical diagnostics and genetic research. Whole genome
sequencing has been of importance in the epidemiologic analysis of bacterial
pathogens. However, few whole genome sequencing-based genotyping pipelines are
available for pra... | 1810.13027v1 |
2018-11-02 | Ladder-like optical conductivity in the spin-fermion model | In the nested limit of the spin-fermion model for the cuprates,
one-dimensional physics in the form of half-filled two-leg ladders emerges. We
show that the renormalization group flow of the corresponding ladder is towards
the d-Mott phase, a gapped spin-liquid with short-ranged d-wave pairing
correlations, and reveals... | 1811.01103v2 |
2018-11-13 | Hydrodynamic and Solid Mechanics Analysis of Capillary Force-Induced Mold Deformation in Sub-10 nm UV Nanoimprint Lithography | A model has been developed to study the dynamic filling process and to
investigate the capillary force-induced deformation of nanostructures on the
imprint mold during ultraviolet nanoimprint lithography (UV-NIL) down to sub-10
nm resolution. The dynamic behavior of resist filling with varied physical
parameters was in... | 1811.05103v2 |
2018-11-29 | Magneto-immutable turbulence in weakly collisional plasmas | We propose that pressure anisotropy causes weakly collisional turbulent
plasmas to self-organize so as to resist changes in magnetic-field strength. We
term this effect "magneto-immutability" by analogy with incompressibility
(resistance to changes in pressure). The effect is important when the pressure
anisotropy beco... | 1811.12421v2 |
2019-02-15 | Electrodynamics of granular aluminum from superconductor to insulator: observation of collective superconducting modes | We report on a detailed study of the optical response and $T_c-\rho$ phase
diagram ($T_c$ being the superconducting critical temperature and $\rho$ the
normal state resistivity of the film) of granular aluminum, combining transport
measurements and a high resolution optical spectroscopy technique. The
$T_c-\rho$ phase ... | 1902.05843v2 |
2019-02-27 | Energy bandpass filtering in superlattice phase change memories | We propose energy bandpass filtering employed using the idea of
anti-reflection heterostructures as a means to reduce the energy requirements
of a superlattice phase change memory based on GeTe and Sb$_{2}$Te$_{3}$
heterostructures. Different configurations of GeTe/Sb$_{2}$Te$_{3}$
superlattices are studied using the n... | 1902.10551v1 |
2019-05-15 | Automatic Long-Term Deception Detection in Group Interaction Videos | Most work on automated deception detection (ADD) in video has two
restrictions: (i) it focuses on a video of one person, and (ii) it focuses on a
single act of deception in a one or two minute video. In this paper, we propose
a new ADD framework which captures long term deception in a group setting. We
study deception ... | 1905.08617v2 |
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