Mesoscopic fluctuations of the Coulomb drag

被引:36
作者
Narozhny, BN [1 ]
Aleiner, IL
机构
[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[2] Ruhr Univ Bochum, D-44780 Bochum, Germany
关键词
D O I
10.1103/PhysRevLett.84.5383
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider mesoscopic fluctuations of the Coulomb drag coefficient rho(D) in the system of two separated two-dimensional electron gases. It is shown that at low temperatures sample-to-sample fluctuations of rho(D) exceed its ensemble average. It means that in such a regime the sign of rho(D) is random and the temperature dependence almost saturates, rho(D) similar to 1/root T.
引用
收藏
页码:5383 / 5386
页数:4
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