Quantum rings as electron spin beam splitters

Details Quantum rings as electron spin beam splitters Quantum rings as electron spin beam splitters

2005-07-27

arxiv.org/abs/cond-mat/0507650v2

Phys. Rev. B 73, 155325, (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; minor changes

Scientific paper

10.1103/PhysRevB.73.155325

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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