Spin filtering by a periodic nanospintronic devices
Mesoscale and Nanoscale Physics
2009-11-13 v2
Abstract
For a linear chain of diamond-like elements, we show that the Rashba spin-orbit interaction (which can be tuned by a perpendicular gate voltage) and the Aharonov-Bohm flux (due to a perpendicular magnetic field) can combine to select only one propagating ballistic mode, for which the electronic spins are fully polarized along a direction that can be tuned by the electric and magnetic fields and by the electron energy. All the other modes are evanescent. For a wide range of parameters, this chain can serve as a spin filter.
Cite
@article{arxiv.0805.3617,
title = {Spin filtering by a periodic nanospintronic devices},
author = {Amnon Aharony and Ora Entin-Wohlman and Yasuhiro Tokura and Shingo Katsumoto},
journal= {arXiv preprint arXiv:0805.3617},
year = {2009}
}
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