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Title: Role of virtual band population for high harmonic generation in solids
Authors: Sanari, Yasuyuki
Hirori, Hideki  kyouindb  KAKEN_id  orcid (unconfirmed)
Aharen, Tomoko
Tahara, Hirokazu  kyouindb  KAKEN_id  orcid (unconfirmed)
Shinohara, Yasushi
Ishikawa, Kenichi L.
Otobe, Tomohito
Xia, Peiyu
Ishii, Nobuhisa
Itatani, Jiro
Sato, Shunsuke A.
Kanemitsu, Yoshihiko  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 佐成, 晏之
廣理, 英基
阿波連, 知子
田原, 弘量
篠原, 康
石川, 顕一
乙部, 智仁
夏, 沛宇
石井, 順久
板谷, 治郎
佐藤, 駿丞
金光, 義彦
Issue Date: 15-Jul-2020
Publisher: American Physical Society (APS)
Journal title: Physical Review B
Volume: 102
Issue: 4
Thesis number: 041125
Abstract: We study the sub-band-gap high harmonic generation (HHG) in a methylammonium lead trichloride single crystal. Anisotropy in the crystal orientation dependence of the high harmonic yield is observed, and the yield varies substantially with the electric field strength of the midinfrared laser pulse used for excitation. Our real-time ab initio simulations reproduce the experimental results well and also show that the HHG is independent of the interband decoherence time. Based on a microscopic analysis of the intraband current, we reveal that the orientation dependence of the HHG in this perovskite semiconductor is governed by the virtual band population, rather than the anharmonicity of the electronic band structure.
Description: 光と固体の量子力学的な相互作用による新たな光の発生機構を解明 --高次高調波光の発生機構の解明に向けた新たな知見--. 京都大学プレスリリース. 2020-07-30.
Rights: ©2020 American Physical Society
DOI(Published Version): 10.1103/PhysRevB.102.041125
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