Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-11-27
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 1 eps figure
Scientific paper
10.1103/PhysRevLett.86.3610
We consider mesoscopic fluctuations of Coulomb drag transresistivity between two layers at a Landau level filling factor $\nu=1/2$ 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 $T^{-1/2}$. We find the dependence of this variance on density and magnetic field to reflect the attachment of two flux quanta to each electron.
Aleiner Igor L.
Narozhny Boris N.
Stern Ady
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