SYMMETRY-BREAKING IN PSEUDOMORPHIC V-GROOVE QUANTUM WIRES

被引：64

作者：

GRUNDMANN, M

STIER, O

BIMBERG, D

机构：

[1] Institut für Festkörperphysik, Technische Universität Berlin, D-10623 Berlin

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.50.14187

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pseudomorphic crescent-shaped quantum wires are shown to exhibit size-dependent symmetry breaking due to an anisotropic strain distribution. We predict level degeneracies and an increased carrier lifetime. As a model system In0.2Ga0.8As/Al0.2Ga0.8As quantum wires are simulated with finite-element analysis to obtain the strain tensor. Within the confinement potentials, which are strongly modified by the strain-induced potentials and the piezoelectric field, the single-particle Schrödinger equation is solved for electrons and holes. © 1994 The American Physical Society.

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页码：14187 / 14192

页数：6

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