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Spatially resolved exciton trapping in a voltage-controlled lateral superlattice

Zimmermann, S. ; Schedelbeck, Gert ; Govorov, A. O. ; Wixforth, A. ; Kotthaus, J.P. ; Bichler, Max ; Wegscheider, Werner ; Abstreiter, Gerhard
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Date of publication of this fulltext: 09 Nov 2009 13:15


Abstract

With spatially resolved photoluminescence experiments we demonstrate voltage-controlled trapping of excitons in a submicron scale lateral potential superlattice imposed on a semiconductor quantum well. The potential modulation is achieved by two interdigitated field-effect electrodes on top of the sample surface. Both parallel and vertical electric field components strongly modify the optical ...

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