Ratchet-Like Solitonic Transport in Quantum Hall Bilayers

Abstract

The pseudo-spin model for double layer quantum Hall system with total landau level filling factor $\nu =1$ 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.

arXiv comment4 pages, 4 figures

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Cited by in corpus (5)

• How to make a bilayer exciton condensate flow
• Quantum Hall Superfluids in Topological Insulator Thin Films
• Critical Tunneling Currents in Quantum Hall Superfluids: Pseudospin-Transfer Torque Theory
• Tunneling at ${\nu }_T=1$ in Quantum Hall Bilayers
• Locking and unlocking of the counterflow transport in nu=1 quantum Hall bilayers by tilting of magnetic field