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Nonlinear optical conductivity of bilayer graphene with Rashba spin-orbit interaction in the terahertz regime

Journal Article


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Abstract


  • 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.

Authors


  •   Liu, Zheng (external author)
  •   Sanderson, Matthew (external author)
  •   Chao Zhang
  •   Cao, Juncheng (external author)

Publication Date


  • 2015

Citation


  • Liu, Z., Sanderson, M., Zhang, C. & Cao, J. C. (2015). Nonlinear optical conductivity of bilayer graphene with Rashba spin-orbit interaction in the terahertz regime. Journal of Applied Physics, 118 (4), 043106-1-043106-5.

Scopus Eid


  • 2-s2.0-84938274029

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5256&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4235

Start Page


  • 043106-1

End Page


  • 043106-5

Volume


  • 118

Issue


  • 4

Abstract


  • 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.

Authors


  •   Liu, Zheng (external author)
  •   Sanderson, Matthew (external author)
  •   Chao Zhang
  •   Cao, Juncheng (external author)

Publication Date


  • 2015

Citation


  • Liu, Z., Sanderson, M., Zhang, C. & Cao, J. C. (2015). Nonlinear optical conductivity of bilayer graphene with Rashba spin-orbit interaction in the terahertz regime. Journal of Applied Physics, 118 (4), 043106-1-043106-5.

Scopus Eid


  • 2-s2.0-84938274029

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5256&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4235

Start Page


  • 043106-1

End Page


  • 043106-5

Volume


  • 118

Issue


  • 4