Effect of asymmetry on nonlinear optical response in graphene
RIS ID
92698
Abstract
We show that a slight asymmetry in the wave function of graphene can result in a significant enhancement of the nonlinear effect on the optical response. The third-order nonlinear current due to asymmetry modification of the wave function increases with kFa, where kF is the Fermi eigenvector and a is the lattice constant. The effect of asymmetry can significantly enhance the third-order current at low temperature and at large Fermi energies. For kFa around 1, the nonlinear current increases by around 40% at low temperatures.
Publication Details
Cao, W. H. & Ang, Y. Sin. (2014). Effect of asymmetry on nonlinear optical response in graphene. Europhysics Letters: a letters journal exploring the frontiers of physics, 107 (3), 37007-2-37007-5.