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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
Frustaglia, Diego ; Hentschel, Martina ; Richter, Klaus
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Date of publication of this fulltext: 05 Aug 2009 13:29



Abstract

We study the spin-dependent magneto conductance 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 ...

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