Electronic structure of impurity-substituted Bi2Sr 2CaCu2O8+δ studied by angle-resolved photoemission spectroscopy

K. Terashima, D. Hashimoto, H. Matsui, T. Sato, T. Takahashi, T. Yamamoto, K. Kadowaki

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    1 Citation (Scopus)

    Abstract

    We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi2Sr2CaCu 2O8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the Tc in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.

    Original languageEnglish
    Pages (from-to)271-273
    Number of pages3
    JournalJournal of Physics and Chemistry of Solids
    Volume67
    Issue number1-3
    DOIs
    Publication statusPublished - Jan 2006

    Keywords

    • D. Superconductivity

    ASJC Scopus subject areas

    • General Chemistry
    • General Materials Science
    • Condensed Matter Physics

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