Zrenner, Artur and Frankenberger, J. and Paassen, A. and Efros, A. L. and Stopa, M. and Bichler, Max and Wegscheider, Werner
Direct observation of hole edge channels in a two-dimensional electron gas.
Physica E Low-dimensional Systems and Nanostructures 6 (1-4), pp. 230-233.
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.