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Direct Observation of Hole Edge Channels in a Two Dimensional Electron Gas

DOI to cite this document:
Paassen, A. ; Zrenner, Artur ; Efros, A. L. ; Stopa, M. ; Frankenberger, J. ; Bichler, Max ; Wegscheider, Werner
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Date of publication of this fulltext: 30 Nov 2009 13:07


We report the direct optical observation of confinement and transport of minority holes in a two dimensional electron gas. 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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