RIS ID
102375
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.
Grant Number
ARC/DP140101501
Publication Details
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.