%0 Journal Article
%T Ultrafast field control of symmetry, reciprocity, and reversibility in buckled graphene-like materials
%A Hamed Koochaki Kelardeh
%A Vadym Apalkov
%A Mark I. Stockman
%J Physics
%D 2015
%I arXiv
%R 10.1103/PhysRevB.92.045413
%X We theoretically show that buckled two-dimensional graphene-like materials (silicene and germanene) subjected to a femtosecond strong optical pulse can be controlled by the optical field component normal to their plane. In such strong fields, these materials are predicted to exhibit non-reciprocal reflection, optical rectification and generation of electric currents both parallel and normal to the in-plane field direction. Reversibility of the conduction band population is also field- and carrier-envelope phase controllable. There is a net charge transfer along the material plane that is also dependent on the normal field component. Thus a graphene-like buckled material behaves analogously to a field-effect transistor controlled and driven by the electric field of light with subcycle (femtosecond) speed.
%U http://arxiv.org/abs/1504.08300v1