Oscillatory magnetothermopower and resonant phonon drag in a high-mobility 2D electron gas

被引：21

作者：

Zhang, J ^{[1
]}

Lyo, SK

Du, RR

Simmons, JA

Reno, JL

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.156802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimental and theoretical evidence is presented for new low-magnetic-field (B<5 kG) 1/B oscillations in the thermoelectric power of a high-mobility GaAs/AlGaAs two-dimensional (2D) electron gas. The oscillations result from inter-Landau-level resonances of acoustic phonons carrying a momentum equal to twice the Fermi wave number at B=0. Numerical calculations show that both 3D and 2D phonons can contribute to this effect.

引用

页码：156802 / 1

页数：4

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