%0 Journal Article
%T Floquet Weyl Semimetal Induced by Off-Resonant Light
%A Rui Wang
%A Baigeng Wang
%A Rui Shen
%A L. Sheng
%A D. Y. Xing
%A Sergey Y. Savrasov
%J Physics
%D 2013
%I arXiv
%R 10.1209/0295-5075/105/17004
%X We propose that a Floquet Weyl semimetal state can be induced in three-dimensional topological insulators, either nonmagnetic or magnetic, by the application of off-resonant light. The virtual photon processes play a critical role in renormalizing the Dirac mass and so resulting in a topological semimetal with vanishing gap at Weyl points. The present mechanism via off-resonant light is quite different from that via on-resonant light, the latter being recently suggested to give rise to a Floquet topological state in ordinary band insulators.
%U http://arxiv.org/abs/1308.4266v2