Time-dependent Hartree-Fock study of electron-hole interaction effects on high-harmonic generation from periodic crystals

Abstract

We investigate the multielectron effects on high-harmonic generation from solid-state materials using the time-dependent Hartree-Fock theory. We find qualitative change in harmonic spectra, in particular, multiple-plateau formation at significantly lower laser intensities than within the independent-electron approximation. We reveal its origin in terms of interband polarization, i.e, electron-hole polarization, enabling interband excitation at remote crystal momenta via Coulomb potential.

arXiv comment5 pages with 4 figures, plus 3 additional pages of supplementary material and 2 figures

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• Disorder Effects on the Origin of High-Order Harmonic Generation in Solids
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• High-harmonic spectroscopy of strongly bound excitons in solids
• Edge-state and bulk-like laser-induced correlation effects in high-harmonic generation from a linear chain
• Edge-state-induced correlation effects in two-color high-harmonic generation
• Strong Field Optical Hall Effect in 2D Weyl Semimetal