Spin transport in graphene spin-orbit barrier structure

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

13 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)632-636
Journal / PublicationPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume377
Issue number8
Publication statusPublished - 1 Mar 2013

Abstract

We studied spin-dependent transport in monolayer graphene with a spin-orbit barrier, a narrow strip in which the spin-orbit interaction is not zero. When the Fermi energy is between the two spin-split bands, the structure can be used to generate spin-polarized current. For a strong enough Rashba strength, a thick enough barrier or a low enough Fermi energy, highly spin-polarized current is generated (polarization ∼0.7-0.85). Under these conditions, the spin direction of the transmitted electron is approximately perpendicular to the direction of motion. This shows that graphene spin-orbit nanostructures are useful for the development of graphene spintronic devices. © 2013 Elsevier B.V. All rights reserved.

Research Area(s)

  • Graphene, Quantum transport, Spin polarization, Spin-orbit interaction, Spintronic

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