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Circular parabolic quantum dots with repulsive off-center impurities: an SDFT study

Wensauer, Andreas ; Kainz, Josef ; Suhrke, Michael ; Rössler, Ulrich
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Date of publication of this fulltext: 05 Aug 2009 13:28


Abstract

Quantum dots (QDs) realized by etching or gate structures in a two-dimensional electron system may, under realistic conditions, contain an impurity atom which causes deviations of the electron structure from the ideal case. We have performed ground-state calculations for circular disk-like QDs with a parabolic confinement potential and a repulsive off-center impurity. Besides the distance of the ...

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