BAND-STRUCTURE EFFECTS ON COHERENT FOCUSING IN A 2-DIMENSIONAL HOLE GAS

被引：9

作者：

GOLDONI, G

FASOLINO, A

机构：

[1] Scuola Internazionale Superiore di Studi Avanzati, 34014 Trieste

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.44.8369

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the coherent focusing in a weak magnetic field of a two-dimensional hole gas realized in a semiconductor heterostructure. By use of a simple model, we study how the coherence effects displayed by ballistic conduction electrons are modified if warped and nonparabolic bands are taken into account. We find that the amplitude and periodicity of the focusing current are very sensitive to band-structure dispersion.

引用

页码：8369 / 8372

页数：4

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