Conductance fluctuations of chiral metals

被引：8
|
作者：
Druist, DP [1 ]
Yoo, KH
Turley, PJ
Gwinn, EG
Maranowski, K
Gossard, AC
机构：
[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Dept Mat Engn, Santa Barbara, CA 93106 USA
[3] Korea Res Inst Stand & Sci, Taejon 305606, South Korea
[4] Hughes Space & Commun, Los Angeles, CA 90009 USA
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1999年 / 25卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
chiral; edge state; quantum Hall; surface sheath;
D O I：
10.1006/spmi.1998.0634
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study conductance fluctuations of the edge-state sheath that forms in the integer quantum Hall effect from the coupled edge states of a GaAs/AlxGa1-xAs multilayer. Comparison of the measured variance in the vertical conductance to recent theoretical predictions for mesoscopic fluctuations suggests dephasing lengths of 1-10 mu m around the sheath perimeter at low temperatures. However, inconsistencies in the estimated inelastic lengths indicate that present understanding of dephasing on the sheath is incomplete. (C) 1999 Academic Press.
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页码：181 / 184
页数：4
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