Mesoscopic fluctuations of the Coulomb drag at ν=1/2

被引:32
|
作者
Narozhny, BN [1 ]
Aleiner, IL
Stern, A
机构
[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[2] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel
关键词
D O I
10.1103/PhysRevLett.86.3610
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider mesoscopic fluctuations of Coulomb drag transresistivity between two layers at a Landau level filling factor v = 1/2 each. We find that, at low temperatures, sample to sample fluctuations exceed both the ensemble average and the corresponding fluctuations at B = 0. At the experimentally relevant temperatures, the variance of the transresistivity is proportional to T-1/2. We find the dependence of this variance on density and magnetic field to reflect the attachment of two Bur quanta to each electron.
引用
收藏
页码:3610 / 3613
页数:4
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