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Title: Impact of spin-orbit splitting on two-photon absorption spectra in a halide perovskite single crystal
Authors: Ohara, Keiichi
Yamada, Takumi
Aharen, Tomoko
Tahara, Hirokazu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0738-5623 (unconfirmed)
Hirori, Hideki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-6056-8675 (unconfirmed)
Suzuura, Hidekatsu
Kanemitsu, Yoshihiko  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0788-131X (unconfirmed)
Author's alias: 山田, 琢允
田原, 弘量
廣理, 英基
金光, 義彦
Issue Date: 15-Jan-2021
Publisher: American Physical Society (APS)
Journal title: Physical Review B
Volume: 103
Issue: 4
Thesis number: L041201
Abstract: Metal halide perovskites have emerged as versatile photonic device materials because of their outstanding optical properties. Here, we report the two-photon absorption (TPA) spectra for CH₃NH₃PbBr₃ perovskite single crystals under linearly and circularly polarized laser pulses. We experimentally determined the spin-orbit splitting energy from the TPA linear-circular dichroism spectrum and found the higher-energy band around 0.8 eV above the band edge. From a theoretical analysis of the experimental data, we evaluated the exciton binding energy and the exciton reduced mass. Our findings provide essential information on the electronic structures and carrier dynamics of halide perovskites.
Rights: ©2021 American Physical Society
許諾条件に基づいて掲載しています。
URI: http://hdl.handle.net/2433/261133
DOI(Published Version): 10.1103/PhysRevB.103.L041201
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