Relationship between Madelung Potentials and Bond Valence Sums in Copper-Oxide Superconductors

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概要

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• High-T_c copper-oxide sttperconductors are characterized from the viewpoint of crystal chemistry through comparative analyses of Cu-O bond lengths, Madelung site poteratials and bond valence sums. The interrelationships among these structural and electronic parameters are investigated in detail for the elucidation of the crystalchemical factors governing T_c and the species of doped carriers. Two characteristics, the strain parameter for CuO_2 planes calculated on the basis of bond valence sums and the Madelung-potential difference between inplane O and Cu sites, are shown to represent an essentially equivalent physical content. The ability of the present analysis to predict the maximum value of T_c of (possible candidates for) cuprate superconductors is also discussed.

• 社団法人応用物理学会の論文
• 1994-02-15

著者

• Tanaka Shigenori

  Advanced Research Laboratory Research And Development Center Toshiba Corporation

• TANAKA Shigenori

  Advanced Research Laboratory, Research and Development Center, Toshiba Corporation

• Tanaka Shigenori

  Advanced Materials and Devices Laboratory, Corporate Research and Development Center, Toshiba Corporation, 1 Komukai Toshiba-cho, Saiwai-ku, Kawasaki 212-8582, Japan

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• Variational Quantum Monte Carlo Approach to the Electronic Structure of NiO
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