Anomalous Shubnikov-de Haas oscillations in two-dimensional systems

被引：3
|
作者：
Winkler, R
Papadakis, SJ
De Poortere, EP
Lu, JP
Shayegan, M
机构：
[1] Univ Erlangen Nurnberg, Inst Tech Phys 3, Lst Theoret Festkorperphys, D-91058 Erlangen, Germany
[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
来源：
PHYSICA B | 2001年 / 298卷 / 1-4期
关键词：
two-dimensional systems; magneto-oscillations; spin-orbit coupling; semiclassics;
D O I：
10.1016/S0921-4526(01)00246-0
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Shubnikov-de Haas (SdH) oscillations have long been used to measure the unequal spin-subband densities of inversion asymmetric two-dimensional (2D) systems. Our experiments and self-consistent numerical calculations for 2D GaAs hole systems indicate that, in general, these oscillations are not simply related to the population of spin-split subbands at zero-magnetic-field The SdH oscillations depend sensitively on the crystallographic growth directions of a semiconductor quantum well. Our quantum mechanical analysis reveals the inapplicability of conventional Bohr-Sommerfeld quantization for systems with spin-orbit interaction. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：13 / 17
页数：5
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