Commensurate Composite Fermions in weak periodic electrostatic potentials: Direct evidence of a periodic effective magnetic field

URN to cite this document:: urn:nbn:de:bvb:355-epub-79053
DOI to cite this document:: 10.5283/epub.7905

Smet, J. ; Jobst, S. ; Klitzing, K. ; Weiss, Dieter ; Wegscheider, Werner ; Umansky, V.

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Item type:	Article
Open Access Type:	Due to SHERPA/RoMEO
Journal or Publication Title:	Physical Review Letters
Volume:	83
Page Range:	p. 2620
Date:	1999
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Dewey Decimal Classification:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	7905

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Abstract

Within the composite fermion model, it is anticipated that a periodic variation of the density in a two-dimensional electron system at half filling produces a periodic fictitious magnetic field. In regions of smaller density fictitious flux quanta are missing to compensate the external magnetic field. The observation of magnetic commensurability minima in the dc-transport response ...