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This report reviews recent progress in computing Kubo formulas for general interacting Hamiltonians. The aim is to calculate electric and thermal magneto-conductivities in strong scattering regimes where Boltzmann equation and Hall…

强关联电子 · 物理学 2024-10-04 Assa Auerbach , Sauri Bhattacharyya

A Kubo inspired formalism is proposed to compute the longitudinal and transverse dynamical conductivities of an electron in a plane (or a gas of electrons at zero temperature) coupled to the potential vector of an external local magnetic…

介观与纳米尺度物理 · 物理学 2009-10-28 Jean Desbois , Stéphane Ouvry , Christophe Texier

The quantum Hall effects in the sliding bilayer graphene and AAB-stacked trilayer system are investigated by the Kubo formula and the generalized tight-binding model. The various stacking configurations can greatly diversify the magnetic…

材料科学 · 物理学 2017-11-22 Thi-Nga Do , Cheng-Peng Chang , Po-Hsin Shih , Ming-Fa Lin

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

Exact formulas for the Hall coefficient, modified Nernst coefficient, and thermal Hall coefficient of metals are derived from the Kubo formula. These coefficients depend exclusively on equilibrium (time independent) susceptibilities, which…

强关联电子 · 物理学 2019-03-27 Assa Auerbach

We report an order-N approach to compute the Kubo Hall conductivity for disorderd two-dimensional systems reaching tens of millions of orbitals, and realistic values of the applied external magnetic fields (as low as a few Tesla). A…

介观与纳米尺度物理 · 物理学 2015-06-23 Frank Ortmann , Nicolas Leconte , Stephan Roche

The effect due to doping by B, Si, N on the magneto-transport properties of graphene is investigated using the generalized tight-binding model in conjunction with the Kubo formula. The crucial electronic and transport properties are greatly…

计算物理 · 物理学 2019-07-23 Po-Hsin Shih , Thi-Nga Do , Godfrey Gumbs , Danhong Huang , Ming-Fa Lin

We study the full distribution of the zero-temperature Hall conductivity in a lattice model of the IQHE using the Kubo formula across disorder realizations. Near the localization-delocalization transition, the conductivity exhibits…

介观与纳米尺度物理 · 物理学 2026-01-01 Emuna Rimon , Eytan Grosfeld , Yevgeny Bar Lev

We study a tight binding model including both on site disorder and coupling of the electrons to randomly oriented magnetic moments. The transport properties are calculated via the Kubo-Greenwood scheme, using the exact eigenstates of the…

无序系统与神经网络 · 物理学 2009-11-11 Sanjeev Kumar , Pinaki Majumdar

In the organic superconducting \kappa-(BEDT-TTF) compounds, various transport phenomena exhibit striking non-Fermi liquid behaviors, which should be the important clues to understanding the electronic state of this system. Especially, the…

超导电性 · 物理学 2009-10-31 H. Kontani , H. Kino

The Hall conductivity given by the Kubo formula is a linear response of the quantum transverse transport to a weak electric field. It has been intensively studied for a quantum system without decoherence, but it is barely explored for…

量子物理 · 物理学 2014-10-14 H. Z. Shen , W. Wang , X. X. Yi

We present $\beta$-FeSe magnetotransport data, and describe them theoretically. Using a simplified microscopic model with two correlated effective orbitals, we determined the normal state electrical conductivity and Hall coefficient, using…

超导电性 · 物理学 2016-03-01 J. D. Querales-Flores , M. L. Amigó , G. Nieva , C. I. Ventura

We present magnetotransport calculations for homogeneous two-dimensional electron systems including the Rashba spin-orbit interaction, which mixes the spin-eigenstates and leads to a modified fan-chart with crossing Landau levels. The…

介观与纳米尺度物理 · 物理学 2016-08-16 M. Langenbuch , M. Suhrke , U. Rössler

Conductivities and Hall coefficients of two dimensional hard core bosons are calculated using the thermodynamic expansions of Kubo formulas. At temperatures above the superfluid transition, the resistivity rises linearly and is weakly…

强关联电子 · 物理学 2024-01-12 Sauri Bhattacharyya , Ayush De , Snir Gazit , Assa Auerbach

Transport properties of dense QCD matter is discussed. Using the Kubo formula for conductivity, we discuss some topological aspects of quark matter during chiral transition. The close relation to Weyl semimetal is pointed out and anomalous…

高能物理 - 唯象学 · 物理学 2020-02-17 Toshitaka Tatsumi , Hiroaki Abuki

The magneto-transport properties of planar and layered strongly inhomogeneous two-phase systems are investigated, using the explicit expressions for the effective conductivities and resistivities obtained by the exact dual transformation,…

无序系统与神经网络 · 物理学 2009-11-11 S. A. Bulgadaev

We use the Kubo formalism to calculate the transresistivity $\rho_{21}$ for carriers in coupled quantum wells in a large perpendicular magnetic field $B$. We find that $\rho_{21}$ is enhanced by approximately 50--100 times over that of the…

凝聚态物理 · 物理学 2009-10-28 M. C. Bonsager , K. Flensberg , B. Y. -K. Hu , A. -P. Jauho

Recent experiments performed the magnetotransport measurements in (001)-oriented Cd$_3$As$_2$ thin films and attributed the magnetotransport properties to the surface states. In this paper, by using an effective model to describe the…

介观与纳米尺度物理 · 物理学 2025-04-16 Zhigang Cai , Fuxiang Li , Yi-Xiang Wang

We present a theory of Hall effect in granular systems at large tunneling conductance $g_{T}\gg 1$. Hall transport is essentially determined by the intragrain electron dynamics, which, as we find using the Kubo formula and diagrammatic…

介观与纳米尺度物理 · 物理学 2009-03-25 Maxim Yu. Kharitonov , Konstantin B. Efetov

We study in detail the transport properties of a model of conducting electrons in the presence of double-exchange between localized spins arranged on a 2D Kagome lattice, as introduced by Ohgushi, Murakami, and Nagaosa (2000). The…

强关联电子 · 物理学 2007-05-23 Ilaria Campana , Giancarlo Jug , Klaus Ziegler
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