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Ratchet-Like Solitonic Transport in Quantum Hall Bilayers

Ramaz Khomeriki·Lasha Tkeshelashvili·Tinatin Buishvili·Shota Revishvili
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Abstract

The pseudo-spin model for double layer quantum Hall system with total landau level filling factor $ν=1$ is discussed. Unlike the "traditional" one where interlayer voltage enters as static magnetic field along pseudo- spin hard axis, in our model we consider applied interlayer voltage as a frequency of precessing pseudo-magnetic field lying into the easy plane. It is shown that a Landau-Lifshitz equation for the considered pseudo magnetic system well describes existing experimental data. Besides that, the mentioned model predicts novel directed intra-layer transport phenomenon in the system: unidirectional intra-layer energy transport is realized due to interlayer voltage induced motion of topological kinks. This effect could be observed experimentally detecting counter-propagating intra-layer inhomogeneous charge currents which are proportional to the interlayer voltage and total topological charge of the pseudo-spin system.

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Ramaz Khomeriki, Lasha Tkeshelashvili, Tinatin Buishvili, Shota Revishvili. 2004-07-15. Ratchet-Like Solitonic Transport in Quantum Hall Bilayers. https://doi.org/10.1140/epjb%2Fe2006-00234-6

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