Quantum Transport in Nonuniform Magnetic Fields: Aharonov-Bohm Ring as a Spin Switch

URN to cite this document:: urn:nbn:de:bvb:355-epub-14694
DOI to cite this document:: 10.5283/epub.1469

Frustaglia, Diego

; Hentschel, Martina ; Richter, Klaus

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Date of publication of this fulltext: 05 Aug 2009 13:29

Alternative links to fulltext:Arxiv DOI Publisher

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Abstract

We study spin-dependent magnetoconductance in mesoscopic rings subject to an inhomogeneous in-plane magnetic field. We show that the polarization direction of transmitted spin-polarized electrons can be controlled via an additional magnetic flux such that spin flips are induced at half a flux quantum. This quantum interference effect is independent of the strength of the nonuniform field applied. ...