Photoemission, Inverse Photoemission and X-Ray Absorption Spectroscopies of Bi2Sr2CaCu2O8

  • T. Takahashi
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 89)


A systematic high-energy-spectroscopic study (angle-resolved photo-emission, inverse photoemission and x-ray absorption) combined with scanning-tunneling spectrocopy has been performed on Bi2Sr2CaCu2O8 to elucidate the nature and origin of the electronic states at the Fermi level. The experimental results indicate that the Fermi-liquid states do exist in the high-T c superconductor and they have a dominant O 2p x−y character with their major weight on CuO2 planes. The Fermi-liquid states would be a kind of “impurity states (bands)” formed in the charge-transfer gap through the strong hybridization between doped O 2p x−y hole orbitals and surrounding empty Cu \(3{d_{{x^2} - {y^2}}}\) orbitals.


Fermi Level Impurity State Photoemission Spectrum Inverse Photoemission Resonant Photoemission 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • T. Takahashi
    • 1
  1. 1.Department of PhysicsTohoku UniversitySendai 980Japan

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