Direct observation of hole edge channels in a two-dimensional electron gas

DOI to cite this document:: 10.5283/epub.11034

Zrenner, Artur ; Frankenberger, J. ; Paassen, A. ; Efros, A. L. ; Stopa, M. ; Bichler, Max ; Wegscheider, Werner

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Date of publication of this fulltext: 30 Nov 2009 13:19

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Abstract

In spatially resolved magneto-optical experiments we observe hole confinement at the edge of a two-dimensional electron gas and hole transport in edge channels. In a theoretical analysis we show that a repulsive edge potential for holes at the boundary of a two-dimensional electron gas is caused by a polaron effect.

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