Persistent Currents and Dissipation in Narrow Bilayer Quantum Hall Bars
arXiv:cond-mat/0010329 · doi:10.1103/PhysRevB.64.201314
Abstract
Bilayer quantum Hall states support a flow of nearly dissipationless staggered current which can only decay through collective channels. We study the dominant finite-temperature dissipation mechanism which in narrow bars is driven by thermal nucleation of pseudospin solitons. We find the finite-temperature resistivity, predict the resulting staggered current-voltage characteristics, and calculate the associated zero-temperature critical staggered current and gate voltage.
4 pgs. REVTeX, 3 eps figures
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