Transport across the incompressible strip in the fractional quantum Hall effect regime

We experimentally investigate transport across a single incompressible strip at the sample edge in the fractional quantum Hall regime under high-imbalance conditions. We show that the I– V dependence exhibits a power-law behavior, which is the characteristic feature of a Luttinger-type tunnel densit...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2008-03, Vol.40 (5), p.1232-1234
Main Authors: Deviatov, E.V., Dolgopolov, V.T., Lorke, A., Reuter, D., Wieck, A.D.
Format: Article
Language:English
Subjects:
Edge states
Luttinger liquid
Quantum Hall effect
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Summary:We experimentally investigate transport across a single incompressible strip at the sample edge in the fractional quantum Hall regime under high-imbalance conditions. We show that the I– V dependence exhibits a power-law behavior, which is the characteristic feature of a Luttinger-type tunnel density of states. The obtained results give the strong evidence for the existence of the so-called neutral collective modes at the sample edge. We observe the influence of the collective modes on the equilibration process across a single incompressible strip in the fractional quantum Hall regime.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2007.08.039