Electronic Structures of (Pb_2Cu)Sr_2Eu_xCe_<n-x>Cu_2O_<2n+6> (n = 2, 3) : Effect of Fluorite Blocks between Adjacent CuO_2 Layers (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• The electronic structures of (Pb_2Cu)Sr_2Eu_xCe_<n-x>Cu_2O_<2n+6> (n = 2, 3) compounds which have fluorite blocks between two adjacent CuO_2 layers have been studied by using ab-initio method. It is found that the anisotropy is enhanced by inserting the fluorite blocks. The Fermi velocity perpendicular to the CuO_2 layers decreases as the thickness of fluorite blocks increases. The Eu substitution is found to affect both the atomic positions and electronic structures. The distance between apical oxygen and copper becomes shorter by the Eu substitution. The energy bands derived from oxygens in the fluorite blocks approach Fermi energy as the content of Eu substitution increases.

• 社団法人日本物理学会の論文
• 2003-05-15

著者

• Ikegawa Sumio

  Corporate Research & Development Center Toshiba Corporation

• Arai M

  National Institute For Materials Science

• Arai M

  Department Of Applied Physics University Of Tokyo

• Arai Masao

  National Institute For Research In Inorganic Materials

• Arai M

  Computational Materials Science Center (cmsc) National Institute Of Materials Science (nims)

• Arai M

  Univ. Tokyo Tokyo Jpn

• Arai Masao

  Computational Materials Science Center National Institute For Materials Science

• Arai Masao

  National Institute For Materials Science

• Ikegawa Sumio

  Corporate R&D Center, Toshiba Corporation, Kawasaki 212-8582, Japan

• IKEGAWA Sumio

  Corporate Research & Development Center, Toshiba Corporation

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