Mesoscopic fluctuations of the Coulomb drag at =1/2
arXiv:cond-mat/0011457 · doi:10.1103/PhysRevLett.86.3610
Abstract
We consider mesoscopic fluctuations of Coulomb drag transresistivity between two layers at a Landau level filling factor each. We find that at low temperature 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 . We find the dependence of this variance on density and magnetic field to reflect the attachment of two flux quanta to each electron.
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