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Spin filter effects in mesoscopic ring structures

Popp, Markus ; Frustaglia, Diego ; Richter, Klaus
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arXiv PDF (07.01.2003)
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Date of publication of this fulltext: 05 Aug 2009 13:29



Abstract

We study the spin-dependent conductance of ballistic mesoscopic ring systems in the presence of an inhomogeneous magnetic field. We show that, for the set-up proposed, even a small Zeeman splitting can lead to a considerable spin polarization of the current. Making use of a spin-switch effect (Frustaglia et al2001 Phys. Rev. Lett. 87 256602) we propose a device of two rings connected in series ...

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