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Commensurability effects in lateral surface-doped superlattices

Deutschmann, R. A. ; Stocken, C. ; Wegscheider, Werner ; Bichler, Max ; Abstreiter, Gerhard
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Date of publication of this fulltext: 30 Nov 2009 13:41


Abstract

We fabricate density-modulated two-dimensional electron systems by shallow compensation doping the donor layer of a modulation-doped heterostructure. Zinc acceptor atoms are diffused from the sample surface which is heated by a focused laser beam. Low-temperature magnetotransport experiments provide evidence that high-quality lateral surface superlattices can be fabricated. In weak periodic ...

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