Spin transport in graphene spin-orbit barrier structure

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

13 Scopus Citations
View graph of relations

Author(s)

Related Research Unit(s)

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

Citation Format(s)

Spin transport in graphene spin-orbit barrier structure. / Zhang, Qingtian; Chan, K. S.; Lin, Zijing et al.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 377, No. 8, 01.03.2013, p. 632-636.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review