Optical determination of the spin polarization of a quantum Hall ferromagnet

被引：0

作者：

Manfra, M.J. ^{[1
]}

Goldberg, B.B. ^{[1
]}

Pfeiffer, L. ^{[1
]}

West, K. ^{[1
]}

机构：

[1] Boston Univ, Boston, United States

来源：

Physica E: Low-Dimensional Systems and Nanostructures | 1997年 / 1卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

Energy gap - Hall effect - Magnetooptical effects;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Recent experimental and theoretical investigations have resulted in a shift in our understanding of the ν = 1 quantum Hall state. There now exists a wealth of evidence that the excitation gap and the resulting quasi-particle spectrum at ν = 1 are due predominately to the ferromagnetic many-body exchange interaction. A great variety of experimentally observed correlations at ν = 1 cannot be incorporated into a perturbative expansion around the single-particle model, a scheme long thought to describe the integral quantum Hall effect (IQHE) at filling factor 1. Theorists now refer to the ν = 1 state as the quantum Hall ferromagnet. In this paper, we review recent theoretical and experimental progress and detail our own optical investigations of the ν = 1 quantum Hall regime.

引用

页码：28 / 35