TY - JOUR
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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U2 - 10.1016/0038-1098(93)90092-2
DO - 10.1016/0038-1098(93)90092-2
M3 - Article
AN - SCOPUS:0027595311
VL - 86
SP - 479
EP - 483
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 8
ER -