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A new model for the electrical conductivity of dense plasmas with a mixture of ion species, containing no adjustable parameters, is presented. The model takes the temperature, mass density and relative abundances of the species as input. It…

Plasma Physics · Physics 2020-04-22 C. E. Starrett , N. R. Shaffer , D. Saumon , R. Perriot , T. Nelson , L. A. Collins , C. Ticknor

We present a contactless method that is capable of characterizing a high electron mobility transistor heterostructure at the wafer stage, right after its growth, before any production process has been attempted, to provide the equilibrium…

Applied Physics · Physics 2019-03-25 Yury Turkulets , Ilan Shalish

This paper presents a physics-based analytical model for the MOS transistor operating continuously from room temperature down to liquid-helium temperature (4.2 K) from depletion to strong inversion and in the linear and saturation regimes.…

Mesoscale and Nanoscale Physics · Physics 2018-08-17 Arnout Beckers , Farzan Jazaeri , Christian Enz

We study the phase diagram and critical properties of quantum Ising chains with long-range ferromagnetic interactions decaying in a power-law fashion with exponent $\alpha$, in regimes of direct interest for current trapped ion experiments.…

Statistical Mechanics · Physics 2021-10-13 E. Gonzalez-Lazo , M. Heyl , M. Dalmonte , A. Angelone

We analyze the qualitative features in the transition spectra of a model superconductor with multiple energy gaps, using a simple extension of the Mattis-Bardeen expression for probes with case I and case II coherence factors. At…

Superconductivity · Physics 2009-11-07 Sergey V. Barabash , David Stroud

The ambipolar electrostatic potential rising along the magnetic field line from the grounded wall to the centre in the linear gas dynamic trap, rules the available suppression of axial heat and particle losses. In this paper, the visible…

Plasma Physics · Physics 2021-07-07 A. Lizunov

A new mechanism that induces charge density variations in corrugated graphene is proposed. Here it is shown how the interplay between lattice deformations and exchange interactions can induce charge separation, i.e., puddles of electrons…

Mesoscale and Nanoscale Physics · Physics 2008-01-08 L. Brey , J. J. Palacios

We present the results on the anomalous 2D transport behavior by employing Drude-Boltzmann transport theory and taking into account the realistic charge impurity scattering effects. Our results show quantitative agreement with the existing…

Strongly Correlated Electrons · Physics 2009-10-31 S. Das Sarma , E. H. Hwang , Igor Zutic

The subject of space charge in ionization detectors is reviewed, showing how the observations and the formalism used to describe the effects have evolved, starting with applications to calorimeters and reaching recent, large-size time…

Instrumentation and Detectors · Physics 2021-03-05 Sandro Palestini

Electrical charging of metal surfaces due to photoelectric generation of carriers is of concern in trapped ion quantum computation systems, due to the high sensitivity of the ions' motional quantum states to deformation of the trapping…

We study interface thermal resistance (ITR) in a system consisting of two dissimilar anharmonic lattices exemplified by Fermi-Pasta-Ulam (FPU) model and Frenkel-Kontorova (FK) model. It is found that the ITR is asymmetric, namely, it…

Disordered Systems and Neural Networks · Physics 2009-11-11 Baowen Li , Jing-Hua Lan , Lei Wang

Radiation damage to space-based Charge-Coupled Device (CCD) detectors creates defects which result in an increasing Charge Transfer Inefficiency (CTI) that causes spurious image trailing. Most of the trailing can be corrected during…

Instrumentation and Methods for Astrophysics · Physics 2015-08-26 Holger Israel , Richard Massey , Thibaut Prod'homme , Mark Cropper , Oliver Cordes , Jason Gow , Ralf Kohley , Ole Marggraf , Sami Niemi , Jason Rhodes , Alex Short , Peter Verhoeve

We investigate the optoelectronic response of a graphene interface junction, formed with bilayer and single-layer graphene, by photocurrent (PC) microscopy. We measure the polarity and amplitude of the PC while varying the Fermi level by…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Xiaodong Xu , Nathaniel M. Gabor , Jonathan S. Alden , Arend van der Zande , Paul L. McEuen

A phenomenological model for the interface between trivial and topological two-dimensional insulators possessing the same band gap is presented. The model depends on three measurable parameters, the energy gap $E_g$, the Fermi velocity of…

Mesoscale and Nanoscale Physics · Physics 2017-12-13 F. L. Freitas

We elucidate on the low mobility and charge traps of the chemically reduced graphene oxide (RGO) sheets by measuring and analyzing temperature dependent current-voltage characteristics. The RGO sheets were assembled between source and drain…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Daeha Joung , A. Chunder , Lei Zhai , Saiful I. Khondaker

We consider phase separation on the strip for the two-dimensional Ising model in the near-critical region. Within the framework of field theory, we find exact analytic results for certain two- and three-point correlation functions of the…

Statistical Mechanics · Physics 2021-09-01 Alessio Squarcini , Antonio Tinti

Quantitative description of charge transport across tunneling and break-junction devices with novel superconductors encounters some problems not present, or not as severe for traditional superconducting materials. In this work, we explain…

Superconductivity · Physics 2016-08-11 E. Zhitlukhina , I. Devyatov , O. Egorov , M. Belogolovskii , P. Seidel

We present a model supported by simulation to explain the effect of temperature on the conduction threshold in disordered systems. Arrays with randomly distributed local thresholds for conduction occur in systems ranging from…

Disordered Systems and Neural Networks · Physics 2007-05-23 Klara Elteto , Eduard G. Antonyan , T. T. Nguyen , Heinrich M. Jaeger

We present detailed experimental studies of the temperature dependence of the plateau conductance of GaAs quantum point contacts in the temperature range from 0.3 K to 10 K. Due to a strong lateral confinement produced by a shallow-etching…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. E. Hansen , A. Kristensen , H. Bruus

A system of two parallel Josephson junction arrays coupled by interlayer capacitances is considered in the situation where one layer is in the vortex-dominated and the other in the charge-dominated regime. This system shows a symmetry…

Condensed Matter · Physics 2009-10-28 Yaroslav M. Blanter , Gerd Schoen