Spin filtering by a periodic spintronic device

Amnon Aharony; Ora Entin-Wohlman; Yasuhiro Tokura; Shingo Katsumoto

doi:10.1103/PhysRevB.78.125328

Spin filtering by a periodic spintronic device

Amnon Aharony, Ora Entin-Wohlman, Yasuhiro Tokura, Shingo Katsumoto

Department of Physics

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

For a linear chain of diamondlike 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 controlled 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.

Original language	English
Article number	125328
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.78.125328
State	Published - 30 Sep 2008

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.78.125328

Cite this

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AB - For a linear chain of diamondlike 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 controlled 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.

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Spin filtering by a periodic spintronic device

Abstract

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