• 文献标题:   Nonlinear optical conductivity of bilayer graphene with Rashba spin-orbit interaction in the terahertz regime
  • 文献类型:   Article
  • 作  者:   LIU Z, SANDERSON M, ZHANG C, CAO JC
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   3
  • DOI:   10.1063/1.4927512
  • 出版年:   2015

▎ 摘  要

The effect of Rashba spin-orbit coupling on the nonlinear optical conductivity in a bilayer graphene is investigated. We demonstrate the very different role played by the Rashba term and interlayer hopping; in some cases, the two roles can be quite opposite. It is found that the Rashba term can either enhance or suppress the nonlinear effect in a bilayer graphene, depending on the strength of the interlayer hopping. For a weak interlayer hopping, the Rashba term can significantly enhance the nonlinear effect. An analytical result was derived, showing the interplay of the Rashba effect and the interlayer hopping effect. (C) 2015 AIP Publishing LLC.