Effective mass suppression in dilute, spin-polarized two-dimensional electron systems

被引：35

作者：

Padmanabhan, Medini ^{[1
]}

Gokmen, T. ^{[1
]}

Bishop, N. C. ^{[1
]}

Shayegan, M. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.101.026402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report effective mass (m(*)) measurements, via analyzing the temperature dependence of the Shubnikov-de Haas oscillations, for dilute, interacting, two-dimensional electron systems (2DESs) occupying a single conduction-band valley in AlAs quantum wells. When the 2DES is partially spin-polarized, m(*) is larger than its band value, consistent with previous results on various 2DESs. However, as we fully spin-polarize the 2DES by subjecting it to strong parallel magnetic fields, m(*) is unexpectedly suppressed and falls even below the band mass.

引用

页数：4

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