Dependence of effective mass on spin and valley degrees of freedom

被引：10

作者：

Gokmen, T. ^{[1
]}

Padmanabhan, Medini ^{[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 / 14期

关键词：

D O I：

10.1103/PhysRevLett.101.146405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure the effective mass (m*) of interacting two-dimensional electrons confined to an AlAs quantum well while we change the conduction-band valley occupation and the spin polarization via the application of strain and magnetic field, respectively. Compared to its band value, m* is enhanced unless the electrons are fully valley- and spin-polarized. Incidentally, in the fully spin- and valley-polarized regime, the electron system exhibits an insulating behavior.

引用

页数：4

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