Theory of the Shubnikov-de Haas oscillations in GaAs/AlGaAs

被引：0

作者：

Horie, S.

Suzuki, A. ^{[1
,2
]}

Fujita, S. ^{[3
]}

Peerzada, L.

Godoy, Salvador ^{[4
]}

Olvera, N.

机构：

[1] Tokyo Univ Sci, Ctr Solid State Phys, Shinjiuku Ku, Tokyo 1628501, Japan

[2] Tokyo Univ Sci, Dept Phys, Shinjiuku Ku, Tokyo 1628501, Japan

[3] SUNY Buffalo, Buffalo, NY 14068 USA

[4] Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Fis, Mexico City 04510, DF, Mexico

来源：

STATISTICAL AND CONDENSED MATTER PHYSICS: OVER THE HORIZON | 2007年

关键词：

GaAs/AlGaAs; magnetoconductivity; magnetotransport; Dingle temperature;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A quantum theory is developed for the Shubnikov-de Haas oscillation in GaAs/AlGaAs. The envelope of the oscillation for the magnetoresistance is shown to be proportional to [sinh(2 pi M-2* k(B)T/heB)](-1), where M* is the carrier mass. Comparison between theory and experiment directly gives the M*-value: M* = 0.30 m, which is 4.5 times the cyclotron mass m* = 0.067 m. The carriers are electrons, each with two flux quanta. The theory avoids the use of the Dingle temperature arising from the "Landau level damping". The susceptibility is an equilibrium property which must be calculated without introducing the scattering mechanism. Both magnetic oscillations decay with the inverse field like exp[-2 pi(2) M* k(B)T/heB)].

引用

页码：223 / +

页数：2

共 21 条

[1] ELECTRONIC-PROPERTIES OF TWO-DIMENSIONAL SYSTEMS [J].