Intrinsic spin Hall effect in graphene: Numerical calculations in a multiorbital model

Seiichiro Onari, Yasuhito Ishikawa, Hiroshi Kontani, Jun Ichiro Inoue

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We study the spin Hall effect (SHE) in graphene using a realistic multiorbital tight-binding model that includes the atomic spin-orbit interaction. The SHE is found to be induced by the spin-dependent Aharonov-Bohm phase. In the metallic case, the calculated values for the spin Hall conductivity (SHC) are much smaller than the quantized Hall conductivity for realistic parameter values of metallic graphene. In the insulating case, quantization of the SHC is violated due to the multiorbital effect. The present study suggests that the SHE in a honeycomb lattice is enhanced by chemical doping, such as the substitution of carbon atoms with boron atoms.

Original languageEnglish
Article number121403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number12
DOIs
Publication statusPublished - Sep 11 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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