Raman Scattering in Cuprate Oxides without Apical Oxygen Atoms
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概要
- 論文の詳細を見る
Two-magnon Raman scattering, X-ray powder diffraction and oxygen content in (Ca_<0.86>Sr_<0.14>)CuO_2 and T'-phase (Nd_<2-x>M_x)CuO_4 (M=Eu, Sm, La and Pr) were measured. We examined the relationship between two-magnon frequency and Cu-O bond length and found that the two-magnon frequency increased linearly with decreasing Cu-O bond length in the T'-phase. The two-magnon frequency of (Ca_<0.86>Sr_<0.14>)CuO_2 is observed at a value consistent with a linear extra polation of the relationship found for the T'-phase material. It suggests that the exchange interaction between electron spins in CuO_2 sheets is closely related to the Cu-O bond length, and increases with decreasing Cu-O bond length.
- 社団法人応用物理学会の論文
- 1990-07-20
著者
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Niwa K
Fujitsu Laboratories Ltd.
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Niwa Koichi
Fujitsu Laboratories Limited.
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Yamanaka Kazunori
Fujitsu Laboratories Ltd.
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Kamehara N
Fujitsu Lab. Ltd. Atsugi‐shi
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Kamehara Nobuo
Fujitsu Laboratories Ltd.
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Uzumaki Takuya
Fujitsu Laboratories Ltd.
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Uzumaki T
Fujitsu Lab. Ltd. Kanagawa Jpn
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Kamehara Nobuo
Fujitsu Laboratories Limited, 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan
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