Mesoscopic fluctuations of the Coulomb drag

Abstract

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 ${\rho }_D\sim 1/\sqrt{T}$.

4 pages, 4 eps figures

References in corpus (4)

• Mesoscopic mechanism of adiabatic charge transport
• Interaction effects and phase relaxation in disordered systems
• Coulomb Drag in the Extreme Quantum Limit
• Coulomb Drag in Double Layers with Correlated Disorder

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