Quantum Hall effect in a multi-valley two-dimensional electron system

被引：7

作者：

Shayegan, M. ^{[1
]}

De Poortere, E. P. ^{[1
]}

Gunawan, O. ^{[1
]}

Shkolnikov, Y. P. ^{[1
]}

Tutuc, E. ^{[1
]}

Vakili, K. ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2007年 / 21卷 / 8-9期

关键词：

heterostructures; quantum Hall effect;

D O I：

10.1142/S0217979207042884

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two-dimensional electrons in an AlAs quantum well occupy multiple conduction-band minima at the X-points of the Brillouin zone. These valleys have large effective mass and g-factor compared to the standard GaAs electrons, and are highly anisotropic. With proper choice of well width and by applying symmetry-breaking strain in the plane, one can control the occupation of different valleys thus rendering a system with tuneable effective mass, g-factor, Fermi contour anisotropy and valley degeneracy. Here we review some of the rich physics that this system has allowed us to explore.

引用

页码：1388 / 1397

页数：10

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