High-harmonic generation in the Rice-Mele model: Role of intraband current originating from interband transition

Autor:	Nagai, Kohei, Murakami, Yuta, Koga, Akihisa
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
DOI:	10.7566/JPSCP.38.011172
Popis:	We consider high-harmonic generation (HHG) in the Rice-Mele model to study the role of the intraband current originating from the change of the intraband dipole via interband transition. This contribution, which has been often neglected in previous works, is necessary for the consistent theoretical formulation of the light-matter coupling. We demonstrate that the contribution becomes crucial when the gap is smaller than or comparable to the excitation frequency and the system is close to the half filling. Comment: 6 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2209.09595 Zobrazit plný text záznamu View this record from Arxiv