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
收藏
页码：156802 / 1
页数：4
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