CONDUCTANCE FLUCTUATIONS AND NONDIFFUSIVE MOTION IN GAAS/ALGAAS HETEROJUNCTION WIRES

被引:22
作者
BIRD, JP [1 ]
GRASSIE, ADC [1 ]
LAKRIMI, M [1 ]
HUTCHINGS, KM [1 ]
HARRIS, JJ [1 ]
FOXON, CT [1 ]
机构
[1] PHILIPS RES LABS,REDHILL RH1 5HA,SURREY,ENGLAND
关键词
D O I
10.1088/0953-8984/2/38/010
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The authors have measured the magnetoresistance of one-dimensional GaAs heterojunction wires at temperatures down to 0.04 K and in magnetic fields of up to 1.2 T. At low magnetic fields they observe universal conductance fluctuations with a temperature dependence consistent with a temperature independent phase breaking length. This unexpected result is not predicted by theory and they speculate that it may be related to the breakdown of diffusive motion.
引用
收藏
页码:7847 / 7852
页数:6
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