Excitonic effects on high-harmonic generation in Mott insulators

Mina Udono, Koudai Sugimoto, Tatsuya Kaneko, Yukinori Ohta

研究成果: Article査読

抄録

To study excitonic effects on high-harmonic generation (HHG) in Mott insulators, we investigate pumped nonequilibrium dynamics in the one-dimensional extended Hubbard model. By employing time-dependent calculations based on the exact diagonalization and infinite time-evolving block decimation methods, we find the strong enhancement of the HHG intensity around the exciton energy. The subcycle analysis in the sub-Mott-gap regime shows that the intensity region of the time-resolved spectrum around the exciton energy splits into two levels and oscillates following the driving electric field. This excitonic dynamics is qualitatively different from the dynamics of free doublon and holon but favorably contributes to HHG in the Mott insulator.

本文言語English
論文番号L241108
ジャーナルPhysical Review B
105
24
DOI
出版ステータスPublished - 2022 6月 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「Excitonic effects on high-harmonic generation in Mott insulators」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル