Electric-field stabilization in a high-density surface superlattice

DOI to cite this document:: 10.5283/epub.11976

Feil, Thomas ; Tranitz, Hans-Peter ; Reinwald, Matthias ; Wegscheider, Werner

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Date of publication of this fulltext: 25 Jan 2010 13:02

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Abstract

By application of the cleaved-edge overgrowth technique, we realize a two-channel superlattice (SL) device. The structure combines the parallel transport through a low-density SL under almost homogeneous electric field conditions with that through a surface SL (SSL) with large carrier density, which is, without parallel transport, subject to pronounced field instabilities. Direct control of the ...