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arXiv · 1505.05227

Floquet dynamics in two-dimensional semi-Dirac semimetals and three-dimensional Dirac semimetals

Awadhesh Narayan
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Abstract

We study the photoresponse of two-dimensional semi-Dirac semimetals and three-dimensional Dirac semimetals to off-resonant circularly polarized light. For two-dimensional semi-Dirac semimetals we find that incident light does not open a gap in the spectrum, in contrast to the case of purely linear dispersion. For the three-dimensional case we find that applying a circularly polarized light, one can tune from a trivial insulator to three-dimensional Dirac semimetal with an inverted gap. We propose and show that application of light leads to an intriguing platform for generation, motion and merging of three-dimensional Dirac points.

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Awadhesh Narayan. 2015-05-31. Floquet dynamics in two-dimensional semi-Dirac semimetals and three-dimensional Dirac semimetals. https://doi.org/10.1103/physrevb.91.205445

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