Manipulating the fully spin-polarized edge currents in graphene ribbon

Details Manipulating the fully spin-polarized edge currents in graphene ribbon Manipulating the fully spin-polarized edge currents in graphene ribbon

2011-01-15

arxiv.org/abs/1101.2972v1

Physical Review B 84, 035410 (2011)

Physics

Condensed Matter

Materials Science

7 pages, 6 figures

Scientific paper

10.1103/PhysRevB.84.035410

Electron fully spin-polarized edge states in graphene emerged at the interfaces of a nonuniform magnetic field are studied numerically in a tight-binding model, with both the orbital and Zeeman-splitting effects of magnetic field considered. We show that the fully spin-polarized currents can be manipulated by a gate voltage. In order to make use of the fully spin-polarized currents in the spin related transport, a three-terminal experiment is designed and expected to export the fully spin-polarized currents. This may have important applications in spin based nanodevices.

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