Coulomb drag as a signature of the paired quantum Hall state
arXiv:cond-mat/9807321 · doi:10.1103/PhysRevB.59.R7825
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 $ν=1/2$. 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