Density-functional studies of spin-orbit splitting in graphene on metals

Z. Y. Li; S. Qiao; Z. Q. Yang; R. Q. Wu

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arXiv · 1008.0696

Density-functional studies of spin-orbit splitting in graphene on metals

Z. Y. Li·S. Qiao·Z. Q. Yang·R. Q. Wu

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Abstract

Spin-orbit splitting in graphene on Ni, Au, or Ag (111) substrates was examined on the basis of density-functional theory. Graphene grown on the three metals was found to have Rashba splitting of a few or several tens of meV. The strong splitting obtained on Au or Ag substrates was mainly ascribed to effective hybridization of graphene $p_{z}$ state with Au or Ag $d_{z^{2}}$ states, rather than charge transfer as previously proposed. Our work provides theoretical understandings of the metal-induced Rashba effect in graphene.

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Z. Y. Li, S. Qiao, Z. Q. Yang, R. Q. Wu. 2010-08-04. Density-functional studies of spin-orbit splitting in graphene on metals. https://arxiv.org/abs/1008.0696

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