Screening and inplane magnetoresistance of anisotropic two-dimensional gas

2003/01/31 by V. S. Khrapai
Physics and Astronomy · #cond-mat

paper · pdf · doi:10.1134/1.1577764

published as Pis'ma v ZhETF vol. 77, issue 6, page 368-371, 2003 · as published. 4 pages, 1 figure

arxiv created 2003/03/12 · arxiv updated 2009/11/30

Abstract

In order to split the influence of the orbital and spin effects on the inplane magnetoresistance of a quasi two-dimensional gas we derive its linear response function and dielectric function for the case of anisotropic effective mass. This result is used for the calculation of elastic transport relaxation time of a quasi two dimensional system in a parallel magnetic field. The relaxation time is proved to be isotropic in the low density limit for the case of charged impurity scattering, allowing to separate the two contributions.

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