Spin-filtered edge states and quantum hall effect in graphene

Dmitry A. Abanin, Patrick A. Lee, Leonid S. Levitov

Research output: Contribution to journalArticlepeer-review

416 Scopus citations

Abstract

Electron edge states in graphene in the quantum Hall effect regime can carry both charge and spin. We show that spin splitting of the zeroth Landau level gives rise to counterpropagating modes with opposite spin polarization. These chiral spin modes lead to a rich variety of spin current states, depending on the spin-flip rate. A method to control the latter locally is proposed. We estimate Zeeman spin splitting enhanced by exchange, and obtain a spin gap of a few hundred Kelvin.

Original languageEnglish (US)
Article number176803
JournalPhysical review letters
Volume96
Issue number17
DOIs
StatePublished - 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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