MAGNETOTRANSPORT IN 2-DIMENSIONAL LATERAL SUPERLATTICES

被引：123
|
作者：
LORKE, A [1 ]
KOTTHAUS, JP [1 ]
PLOOG, K [1 ]
机构：
[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY
来源：
PHYSICAL REVIEW B | 1991年 / 44卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.44.3447
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two-dimensional electron systems on GaAs heterostructures subjected to a two-dimensional superlattice potential reveal novel features in the magnetoresistance. Strong density modulation causing the formation of antidots is accompanied by a pronounced magnetoresistance maximum. On weakly modulated systems, oscillations are observed that reflect the commensurability of the cyclotron diameter and the superlattice period. A classical model of ballistic motion resulting in magnetic-field-dependent diffusion is found to explain our and other recent magnetotransport observations.
引用
收藏
页码：3447 / 3450
页数：4
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