New collective modes in wide quantum wells with in-plane magnetic fields

被引：0
|
作者：
Cheng, SJ [1 ]
Gerhardts, RR [1 ]
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 12卷 / 1-4期
关键词：
quantum wells; in-plane magnetic fields; collective excitations; plasmons;
D O I：
10.1016/S1386-9477(01)00470-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We theoretically investigate, within the random phase approximation. the collective excitations of symmetric wide quantum Wells under in-plane magnetic fields B-parallel to. We find that the B-parallel to, field significantly affects the frequencies, (an-)isotropy and types of the ptasmon modes. In particular. a high B-\ can induce an additional branch of undamped acoustic-like plasmons, which does not exist in single quantum wells without B-parallel to. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：554 / 557
页数：4
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