Raman probe of classical magnetoresistance in doped GaAs/AlAs superlattices

被引：0
|
作者：
Pusep, YA
Liang, JJ
Geurts, J
Moshegov, NN
机构：
[1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany
[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
来源：
PHYSICA B | 2001年 / 298卷 / 1-4期
关键词：
semiconductors; superlattices; magnetic fields; Raman scattering;
D O I：
10.1016/S0921-4526(01)00328-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The characteristical asymmetric shapes of the Raman tines caused by the collective plasmon-LO phonon excitations in heavily doped GaAs/AlAs superlattices were analyzed in order to separate the influence of the magnetic field on the spatial extent of the collective excitations and on their damping constant, which is attributed to the AC conductivity. It was shown that the magnetic field influences the damping of the plasmon-like excitations stronger than their spatial extent. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：324 / 328
页数：5
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