Electron spin filter based on Rashba spin-orbit coupling

A. W. Cummings, R. Akis, D. K. Ferry

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The authors present an electron spin filter that consists of a branching structure under the influence of Rashba spin-orbit coupling. The magnitude of the spin polarization in this device can be tuned by the strength of the spin-orbit interaction. The authors find that the mechanism for the spin filtering is the spatial modulation of the spin-resolved wave functions due to the influence of the Rashba effect. The authors also find evidence suggesting that the geometry of the branch at the junction point is primarily responsible for the strength of the spin polarization.

Original languageEnglish (US)
Article number172115
JournalApplied Physics Letters
Volume89
Issue number17
DOIs
StatePublished - Nov 6 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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