Exchange-enhanced Lande g-factor, effective disorder and collapse of spin-splitting in a two-dimensional GaAs electron system

被引:4
|
作者
Huang, TY
Cheng, YM
Liang, CT [1 ]
Kim, GH
Leem, JY
机构
[1] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
[2] ETRI, Telecommun Basic Res Lab, Taejon 305600, South Korea
[3] KRISS, Mat Evaluat Ctr, Taejon 305600, South Korea
关键词
spin; g-factor; GaAs;
D O I
10.1016/S1386-9477(01)00326-5
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We have measured the low-temperature transport properties of front-gated GaAs Al0.33Ga0.67As heterostructures. Collapse of spin-splitting and an enhanced Lande \g\-factor at Landau level filling factors both v = 3 and 1 are observed. Our experimental results show direct evidence that the electron-electron interactions are stronger at = 3 than those at I over approximately the same perpendicular magnetic field range. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:424 / 427
页数:4
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