Probing the band structure of a two-dimensional hole gas using a one-dimensional superlattice

被引：5

作者：

Brosh, B

Simmons, MY

Holmes, SN

Hamilton, AR

Ritchie, DA

Pepper, M

机构：

[1] Cavendish Laboratory, Madingley Road

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.54.R14273

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using a one-dimensional superlattice we have mapped out the Fermi surface of a two-dimensional (2D) hole gas in a GaAs/AlxGa1-xAs heterojunction grown on the (311)A surface of GaAs. This follows our observation of commensurability magnetoresistance oscillations from a weakly one-dimensionally modulated (311)A 2D hole gas that is confined to square and triangular quantum wells. The dependence of the oscillations on the modulation direction in the (311)A plane reflects its known k-space anisotropy. This method is a minimally invasive probe of the Fermi surface of high-mobility 2D systems.

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页码：14273 / 14276

页数：4

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