Metallic Behavior in A-Site-Ordered Perovskites ACu_3V_4O_<12> with A=Na^+, Ca^<2+>, and Y^<3+>(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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The A-site-ordered perovskites ACu_3V_4O_<12> (A=Na^+, Ca^<2+>, and Y^<3+>) have been found to be Pauli paramagnetic metals. Bond valence sum calculations, magnetic susceptibility measurement, and electronic structure calculations reveal that both Cu and V orbitals contribute to the metallic conduction. Changing the A-site ions in ACu_3V_4O_<12> from monovalent to divalent to trivalent ions changes the physical properties in ways that in a rigid band picture can be attributed to the shift of the Fermi energy. The ACu_3V_4O_<12> compounds, unlike the isostructural metallic CaCu_3Ru_4O_<12>, show no conclusive evidence of heavy-fermion-like behavior.
- 社団法人日本物理学会の論文
- 2008-06-15
著者
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SAITO Takashi
Institute for Chemical Research, Kyoto University
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SHIMAKAWA Yuichi
Institute for Chemical Research, Kyoto University
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Sugaya Takashi
Issp University Of Tokyo
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Azuma Masaki
Institute For Chemical Research Kyoto University
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Shimakawa Yuichi
Institute For Chemical Research Kyoto University
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Shiraki Hiroshi
Institute For Chemical Research Kyoto University
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Saito Takashi
Institute For Chemical Research Kyoto University
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Shimakawa Yuichi
Kyoto Univ. Kyoto Jpn
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