Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 2020
DOI: 10.7566/jpscp.30.011183
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Floquet DMFT Analysis of High Harmonic Generation in Mott Insulators

Abstract: We study the high harmonic generation (HHG) in Mott insulators using Floquet dynamical meanfield theory (DMFT). We show that the main origin of the HHG in Mott insulators is the doublonholon recombination, and that the character of the HHG spectrum differs depending on the field strength. In the weaker-field regime, the HHG spectrum shows a single plateau as in the HHG from gases, and its cut-off energy ǫ cut scales linearly with the field strength E 0 as ǫ cut = ∆ gap + αE 0 , where ∆ gap is the Mott gap. On … Show more

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