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Edge-channel interference controlled by Landau level filling

URN to cite this document:
urn:nbn:de:bvb:355-epub-80394
DOI to cite this document:
10.5283/epub.8039
Litvin, Leonid ; Helzel, Andreas ; Tranitz, H.-P. ; Wegscheider, Werner ; Strunk, Christoph
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Date of publication of this fulltext: 05 Aug 2009 13:54


Abstract

We study the visibility of Aharonov-Bohm interference in an electronic Mach-Zehnder interferometer in the integer quantum Hall regime. The visibility is controlled by the filling factor nu and is observed only between nu[approximate]2.0 and 1.0, with an unexpected maximum near nu=1.5. Three energy scales extracted from the temperature and voltage dependences of the visibility change in a very ...

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