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Quantum rings as electron spin beam splitters

Peter Foldi·Orsolya Kalman·Mihaly G. Benedict·F. M. Peeters
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Abstract

Quantum interference and spin-orbit interaction in a one-dimensional mesoscopic semiconductor ring with one input and two output leads can act as a spin beam splitter. Different polarization can be achieved in the two output channels from an originally totally unpolarized incoming spin state, very much like in a Stern-Gerlach apparatus. We determine the relevant parameters such that the device has unit efficiency.

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Peter Foldi, Orsolya Kalman, Mihaly G. Benedict, F. M. Peeters. 2006-05-08. Quantum rings as electron spin beam splitters. https://doi.org/10.1103/physrevb.73.155325

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