Coulomb drag as a signature of the paired quantum Hall state

Details Coulomb drag as a signature of the paired quantum Hall state Coulomb drag as a signature of the paired quantum Hall state

1998-07-23

arxiv.org/abs/cond-mat/9807321v3

Phys. Rev. B 59, R7825 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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

Scientific paper

10.1103/PhysRevB.59.R7825

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.

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