SPIN-ORBIT SCATTERING FOR LOCALIZED-ELECTRONS - ABSENCE OF NEGATIVE MAGNETOCONDUCTANCE

被引：52

作者：

MEIR, Y ^{[1
]}

WINGREEN, NS ^{[1
]}

ENTINWOHLMAN, O ^{[1
]}

ALTSHULER, BL ^{[1
]}

机构：

[1] TEL AVIV UNIV,RAYMOND & BEVERLY SACLER FAC EXACT SCI,SCH PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.66.1517

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The distribution of hopping conductances in the strongly localized regime in the presence of both a magnetic field and spin-orbit (SO) scattering is calculated via an analytic independent-directed-path formalism and a locator expansion which includes all correlations between paths. Both methods lead to a positive magnetoconductance for all strengths of SO scattering, contrary to recent random-matrix-theory predictions. Extensive numerical simulations demonstrate that the crossover from negative to positive magnetoconductance occurs as the system size exceeds the localization length.

引用

页码：1517 / 1520

页数：4

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