Coherence of elementary excitations in disordered GaAs/AlGaAs superlattices

被引：0
|
作者：
Pusep, Yu. A. [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Paulo, Brazil
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2006年 / 36卷 / 3B期
关键词：
coherence; localization; superlattices;
D O I：
10.1590/S0103-97332006000600027
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The localization properties of the single-particle and collective electron excitations were investigated in the intentionally disordered GaAs/AlGaAs superlattices by weak field magnetoresi stance and Raman scattering. The localization length of the individual electron was found to be considerably larger than that one of the collective excitations. This suggests that the disorder has weaker effect on the electrons than on their collective motion and that the interaction which gives rise to the collective effects increases localization.
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收藏
页码：902 / 904
页数：3
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