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arXiv · 1308.4266

Floquet Weyl Semimetal Induced by Off-Resonant Light

Rui Wang·Baigeng Wang·Rui Shen·L. Sheng·D. Y. Xing·Sergey Y. Savrasov
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Abstract

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.

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Rui Wang, Baigeng Wang, Rui Shen, L. Sheng, D. Y. Xing, Sergey Y. Savrasov. 2013-09-09. Floquet Weyl Semimetal Induced by Off-Resonant Light. https://doi.org/10.1209/0295-5075%2F105%2F17004

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