Coulomb drag as a signature of the paired quantum Hall state

Abstract

Motivated by the recent Coulomb drag experiment of M. P. Lilly et. al, we study the Coulomb drag in a two-layer system with Landau level filling factor $\nu =1/2$. We find that the drag conductivity in the incompressible paired quantum Hall state at zero temperature can be finite. The drag conductivity is also greatly enhanced above $T_c$, at which the transition between the weakly coupled compressible liquids and the paired quantum Hall liquid takes place. We discuss the implications of our results for the recent experiment.

4 pages, 1 figure included, replaced by the published version

References in corpus (1)

• Coulomb drag at ν= 1/2: Composite fermion pairing fluctuations

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