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Experimental investigation of the edge states structure at fractional filling factors

Deviatov, E. V. ; Dolgopolov, V. T. ; Lorke, Axel ; Wegscheider, Werner ; Wieck, A. D.
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Date of publication of this fulltext: 25 Jan 2010 13:04


Abstract

We experimentally study the electron transport between edge states in the fractional quantum Hall effect regime. We find an anomalous increase of the transport across the 2/3 incompressible fractional stripe in comparison with the theoretical predictions for the smooth edge potential profile. We interpret our results as a first experimental demonstration of the intrinsic structure of the incompressible stripes arising at the sample edge in the fractional quantum Hall effect regime.


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