Optical absorption of angulon in metal halide perovskites

被引：0
作者：
Wu, Jia-Wei [1 ]
Cui, Yu [1 ]
Li, Shao-Juan [2 ]
Wang, Zi-Wu [1 ]
机构：
[1] Tianjin Univ, Sch Sci, Dept Phys, Tianjin Key Lab Low Dimens Mat Phys & Preparing Te, Tianjin 300354, Peoples R China
[2] Chinese Acad Sci, State Key Lab Luminescence & Applicat, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2023年 / 670卷
基金：
中国国家自然科学基金;
关键词：
Angulon; Phonon angular momentum; Optical absorption; Metal halide perovskites;
D O I：
10.1016/j.physb.2023.415335
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We theoretically study the optical absorption of an angulon in the metal halide perovskites (MHP) based on the improved Devreese-Huybrechts-Lemmens model, where the formation of quasiparticle angulon states originates from the organic cation rotating in the inorganic octahedral cage of MHP. We find that the resonance optical absorption peaks appear when the energy of the incident photon matches the quantum levels of angulon. Moreover, the intensity of absorption depends on the quantum states of phonon angular momentum. These theoretical results provide significant insight to study the redistribution of angular momenta for the rotating molecules immersed in the many-body environment.
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页数：5
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