Orbital Kondo Effect Due to Assisted Hopping : Superconductivity, Mass Enhancement in Copper Oxides with Apical Oxygen

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概要

• 論文の詳細を見る

• Orbital Kondo effect is treated in a model, where additional to the conduction band there are localized orbitals with energy not very far from the Fermi energy. If the hopping between the conduction band and the localized heavy orbitals depends on the occupation of the conduction band orbital then orbital Kondo correlation occurs. The assisted hopping vertex is enhanced due to the Coulomb interaction between the heavy orbital and the conduction band. The enhanced hopping results in mass enhancement and attractive interaction in the conduction band. The superconductivity transition temperature is calculated. The models of this type can be applied to the high-Tc superconductors where the non-bonding oxygen orbitals of the apical oxygens play the role of heavy orbitals. For an essential range of the parameters the Tc obtained is about 100K.

• 理論物理学刊行会の論文
• 1992-02-25

著者

• Penc K.

  Central Research Institute For Physics

• ZAWADOWSKI A.

  Department of Physics and Science and Technology Center for Superconductivity University of Illinois

• ZIMANYI G.

  Department of Physics, University of California

• Zawadowski A.

  Department Of Physics And Science And Technology Center For Superconductivity University Of Illinois

• Zimanyi G.

  Department Of Physics University Of California

関連論文

• Orbital Kondo Effect Due to Assisted Hopping : Superconductivity, Mass Enhancement in Copper Oxides with Apical Oxygen

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