Magnetoreflection of the lowest exciton in a layered perovskite-type compound (C10H21NH3)2PbI4

M. Hirasawa; T. Ishihara; T. Goto; S. Sasaki; K. Uchida; N. Miura

doi:10.1016/0038-1098(93)90092-2

Magnetoreflection of the lowest exciton in a layered perovskite-type compound (C₁₀H₂₁NH₃)₂PbI₄

M. Hirasawa, T. Ishihara, T. Goto, S. Sasaki, K. Uchida, N. Miura

SCI - Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Magnetoreflection spectra in the Faraday configuration have been investigated up to 40 T at 4.2K for a single crystal of (C₁₀H₂₁NH₃)₂PbI₄, which consists of two-dimensional networks of corner-sharing octahedra [PbI₆]^4-. The Zeeman shift is observed, and the effective g-factor is 1.42±0.04. The observed diamagnetic shift of the lowest exciton is (7 ± 4) x 10^-8eV/T², from which the two-dimensional Bohr radius is estimated to be 7 Å at most. It suggests that the exciton wave function extends only to the 4 nearest neighbor octahedra [PbI₆]^4- in the two-dimensional layer. By referring to the resonant Raman scattering spectra and reflection spectra of strained single crystals, a few narrow dips in high reflectivity region of the lowest exciton are ascribed to the vibronic excitons.

Original language	English
Pages (from-to)	479-483
Number of pages	5
Journal	Solid State Communications
Volume	86
Issue number	8
DOIs	https://doi.org/10.1016/0038-1098(93)90092-2
Publication status	Published - 1993 May

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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title = "Magnetoreflection of the lowest exciton in a layered perovskite-type compound (C10H21NH3)2PbI4",

abstract = "Magnetoreflection spectra in the Faraday configuration have been investigated up to 40 T at 4.2K for a single crystal of (C10H21NH3)2PbI4, which consists of two-dimensional networks of corner-sharing octahedra [PbI6]4-. The Zeeman shift is observed, and the effective g-factor is 1.42±0.04. The observed diamagnetic shift of the lowest exciton is (7 ± 4) x 10-8eV/T2, from which the two-dimensional Bohr radius is estimated to be 7 {\AA} at most. It suggests that the exciton wave function extends only to the 4 nearest neighbor octahedra [PbI6]4- in the two-dimensional layer. By referring to the resonant Raman scattering spectra and reflection spectra of strained single crystals, a few narrow dips in high reflectivity region of the lowest exciton are ascribed to the vibronic excitons.",

author = "M. Hirasawa and T. Ishihara and T. Goto and S. Sasaki and K. Uchida and N. Miura",

year = "1993",

month = may,

doi = "10.1016/0038-1098(93)90092-2",

language = "English",

volume = "86",

pages = "479--483",

journal = "Solid State Communications",

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T1 - Magnetoreflection of the lowest exciton in a layered perovskite-type compound (C10H21NH3)2PbI4

AU - Hirasawa, M.

AU - Ishihara, T.

AU - Goto, T.

AU - Sasaki, S.

AU - Uchida, K.

AU - Miura, N.

PY - 1993/5

Y1 - 1993/5

N2 - Magnetoreflection spectra in the Faraday configuration have been investigated up to 40 T at 4.2K for a single crystal of (C10H21NH3)2PbI4, which consists of two-dimensional networks of corner-sharing octahedra [PbI6]4-. The Zeeman shift is observed, and the effective g-factor is 1.42±0.04. The observed diamagnetic shift of the lowest exciton is (7 ± 4) x 10-8eV/T2, from which the two-dimensional Bohr radius is estimated to be 7 Å at most. It suggests that the exciton wave function extends only to the 4 nearest neighbor octahedra [PbI6]4- in the two-dimensional layer. By referring to the resonant Raman scattering spectra and reflection spectra of strained single crystals, a few narrow dips in high reflectivity region of the lowest exciton are ascribed to the vibronic excitons.

AB - Magnetoreflection spectra in the Faraday configuration have been investigated up to 40 T at 4.2K for a single crystal of (C10H21NH3)2PbI4, which consists of two-dimensional networks of corner-sharing octahedra [PbI6]4-. The Zeeman shift is observed, and the effective g-factor is 1.42±0.04. The observed diamagnetic shift of the lowest exciton is (7 ± 4) x 10-8eV/T2, from which the two-dimensional Bohr radius is estimated to be 7 Å at most. It suggests that the exciton wave function extends only to the 4 nearest neighbor octahedra [PbI6]4- in the two-dimensional layer. By referring to the resonant Raman scattering spectra and reflection spectra of strained single crystals, a few narrow dips in high reflectivity region of the lowest exciton are ascribed to the vibronic excitons.

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JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

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