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Enhanced soft-wall effects for composite fermions in magnetic focusing and commensurability experiments

Smet, J. H. ; Weiss, Dieter ; Klitzing, Klaus von ; Fleischmann, R. ; Ketzmerick, R. ; Geisel, T. ; Wegscheider, Werner ; Coleridge, P. T. ; Wasilewski, Z. W. ; Weimann, G.
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Date of publication of this fulltext: 02 Nov 2009 14:14


Abstract

Transverse magnetic focusing in arrays of abutted square cavities and commensurability oscillations in antidot superlattices were investigated around half Landau-level filling in a two-dimensional electron gas. Both experiments support the validity of the composite fermion model and confirm that composite fermions appear to obey quasi-classical dynamics. Nevertheless, compared to electrons, the ...

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