SPIN DEPENDENT TRANSPORT IN AN ELECTRON GAS WITH MAGNETIC DISORDER

被引：0
|
作者：
van den Berg, T. [1 ]
Verga, A. D. [1 ]
机构：
[1] Aix Marseille Univ, IM2NP, F-13397 Marseille 20, France
来源：
CHAOS, COMPLEXITY AND TRANSPORT | 2012年
关键词：
Condensed matter; diluted magnetic semiconductors; spintronics; localization;
D O I：
暂无
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We consider a two dimensional semiconductor with carriers subject to spin-orbit interactions and scattered by randomly distributed magnetic impurities. We solve the time-dependent Schrdinger equation to investigate the relationship between the geometrical properties of the wavefunction and the system's spin dependent transport properties. Even in the absence of localized states, interference effects modify the carrier diffusion, as revealed by the appearance of power laws dependent on the impurity concentration. For stronger disorder, we find a localization transition characterized by a fractal wavefunction and enhanced spin transport.
引用
收藏
页码：123 / 130
页数：8
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