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We present low-energy electron diffraction (LEED) as elastic electron-atom scattering (EEAS) operating in a target crystal waveguide where a Coulombic carrier wave is wavenumber modulated by exchange-correlation (XC) interaction. Carrier…

材料科学 · 物理学 2021-06-10 John Rundgren , Bo E. Sernelius , Wolfgang Moritz

We theoretically investigate spin transport in half-metallic ferromagnets at finite temperatures. The side-jump and skew-scattering contributions to spin Hall conductivity are derived using the Kubo formula. The electron-magnon interaction…

材料科学 · 物理学 2016-11-08 Y. Ohnuma , M. Matsuo , S. Maekawa

Energy relaxation of hot Dirac fermions in bilayer epitaxial graphene is experimentally investigated by magnetotransport measurements on Shubnikov-de Haas oscillations and weak localization. The hot-electron energy loss rate is found to…

Na-ion conduction, and correlations between Na-ion conduction pathways and crystal structure have been investigated as a function of temperature in the layered battery material Na2Ni2TeO6 by impedance spectroscopy and neutron diffraction,…

材料科学 · 物理学 2020-07-15 A. K. Bera , S. M. Yusuf

The single-band current-dipole Kubo formula for the dynamical conductivity of heavily doped graphene from Kup\v{c}i\'{c} [Phys. Rev. B 91, 205428 (2015)] is extended to a two-band model for conduction $\pi$ electrons in lightly doped…

介观与纳米尺度物理 · 物理学 2016-08-25 I. Kupčić , G. Nikšić , Z. Rukelj , D. Pelc

It is well known that electron-electron interaction in disordered systems leads to logarithmically divergent Altshuler-Aronov corrections to conductivity at low temperatures ($T\tau\ll 1$; $\tau$ is the elastic mean-free time). This paper…

凝聚态物理 · 物理学 2009-11-07 Gabor Zala , B. N. Narozhny , I. L. Aleiner

Bound electron pairs formed due to the peculiarities of the band dispersion of electrons in crystals attract much interest because they can carry charge and spin even in the absence of band conductivity. However, such an important parameter…

强关联电子 · 物理学 2022-02-01 Vladimir A. Sablikov , Bagun S. Shchamkhalova

We calculate the electrical resistivity due to electron-phonon scattering for a model of A3C60 (A= K, Rb), using an essentially exact quantum Monte-Carlo calculation. In agreement with experiment, we obtain exceptionally large metallic…

强关联电子 · 物理学 2017-05-10 O. Gunnarsson , J. E. Han

We discuss electron transport in individual nanometer-scale metallic grains at dilution refrigerator temperatures. In the weak coupling regime, the grains exhibit Coulomb blockade and discrete energy levels. Electron-electron interactions…

介观与纳米尺度物理 · 物理学 2015-06-24 D. Davidovic , A. Anaya , A. L. Korotkov , M. Bowman , M. Tinkham

We present extensive new \emph{ab initio} path integral Monte Carlo (PIMC) simulations of the uniform electron gas (UEG) in the high-temperature regime, $8\leq\theta=k_\textnormal{B}T/E_\textnormal{F}\leq128$. This allows us to study the…

等离子体物理 · 物理学 2022-11-23 Tobias Dornheim , Jan Vorberger , Zhandos Moldabekov , Gerd Röpke , Wolf-Dietrich Kraeft

We derive a formula for the electrical conductivity of solids that includes relaxation, dissipation, and quantum coherence. The derivation is based on the Kubo formula, with a Mori memory function approach to include dissipation effects at…

材料科学 · 物理学 2021-10-07 Brett R. Green , Maria Troppenz , Santiago Rigamonti , Claudia Draxl , Jorge O. Sofo

We investigate the minimum conductivity of graphene within a quasiclassical approach taking into account electron-hole coherence effects which stem from the chiral nature of low energy excitations. Relying on an analytical solution of the…

介观与纳米尺度物理 · 物理学 2011-11-10 Maxim Trushin , John Schliemann

This article presents studies on low-field electrical conduction in the range 4-to-300 K for a ultrafast material: InGaAs:ErAs grown by molecular beam epitaxy. The unique properties include nano-scale ErAs crystallines in host…

材料科学 · 物理学 2015-06-16 W. Zhang , E. R. Brown , M. Martin

We continue our study of the ac-conductivity in linear response theory for the Anderson model using the conductivity measure. We establish further properties of the conductivity measure, including nontriviality at nonzero temperature, the…

数学物理 · 物理学 2015-12-03 Abel Klein , Peter Müller

We compute the electrical conductivity of the strongly interacting medium in the presence of strong magnetic background fields, $eB=4,9~GeV^2$, and for different values of the temperature, both in the confined and in the deconfined…

We present a longitudinal electrical conductivity calculation method for disordered alloys applicable from a wide range of density functional theory (DFT) codes based on the first-principles Wannier-based coherent potential approximation…

材料科学 · 物理学 2024-08-08 Shota Namerikawa , Takashi Koretsune

We have investigated theoretically the effects of the charging energy to the normal metal--insulator--superconductor (NIS) tunnel junction used as a thermometer. We demonstrate by numerical calculations how the charging effects modify NIS…

介观与纳米尺度物理 · 物理学 2009-04-16 P. J. Koppinen , T. Kühn , I. J. Maasilta

We study mechanism of magnetic energy transport, motivated by recent measurements of the thermal conductivity in low dimensional quantum magnets. We point out a possible mechanism of enhancement of the thermal conductivity in gapped…

材料科学 · 物理学 2009-11-07 Keiji Saito , Seiji Miyashita

We have derived the solutions of the relativistic anomalous magnetohydrodynamics with longitudinal Bjorken boost invariance and transverse electromagnetic fields in the presence of temperature or energy density dependent electric…

高能物理 - 唯象学 · 物理学 2023-05-24 Hao-Hao Peng , Sihao Wu , Ren-jie Wang , Duan She , Shi Pu

We studied random resistor networks produced with regular structure and random distribution of edge conductances. These networks are intended to mimic crack-template-based transparent conductive films as well some random networks produced…

无序系统与神经网络 · 物理学 2024-06-24 Yuri Yu. Tarasevich , Irina V. Vodolazskaya , Andrei V. Eserkepov , Fábio D. A. Aarão Reis
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