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Landau Level Broadening and Van Hove Singularities in Lateral Surface Superlattices

URN to cite this document:
urn:nbn:de:bvb:355-epub-78574
DOI to cite this document:
10.5283/epub.7857
Weiss, Dieter ; Klitzing, Klaus von ; Ploog, K. ; Weimann, G.
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Date of publication of this fulltext: 05 Aug 2009 13:57


Abstract

A lateral periodic submicrometer potential in one direction superimposed on a two- dimensional electron gas (2DEG) lifts the degeneracy of the Landau levels (LL\'s) and leads to modulation broadened Landau bands. Due to the new band structure, singularities in the density of states (DOS) are expected which should result in a double peaked structure of the LL\'s (Van Hove singularities). ...

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