Polarization Screening Effect on the Charge Ordering in Magnetite
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概要
- 論文の詳細を見る
On the basis of the pure ionic model the charge ordering in magnetite is studied with due account of the wavevector-dependent polarization-screening effect. The Verwey ordering (Γ'_<25>) is found to be unstable for the electronic polarizability of oxygens larger than [α_e]_c =0.91A^3, where the stablest charge-ordering pattern must be of X_4 symmetry. It is also shown that one fourth of the total modes of the charge fluctuation are nearly degenerate at the critical polarizability [α_e]_c.
- 理論物理学刊行会の論文
- 1977-08-25
著者
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Nakamura Tuto
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Nagara Hitose
Department Of Material Physics Faculty Of Engineering Science Osaka Universitiy
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HAMA Juichiro
Department of Material Physics, Faculty of Engineering Science, Osaka University
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Hama Juichiro
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Nagara Hitose
Department of Material Physics, Faculty of Engineering Science, Osaka University
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NAKAMURA Tuto
Department of Material Physics, Faculty of Engineering Science, Osaka University
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