The influence of out-of-plane disorder on the formation of pseudogap and Fermi arc in Bi2Sr2-xRxCuOy (R=La and Eu)

Y. Okada, T. Takeuchi, A. Shimoyamada, S. Shin, H. Ikuta

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    We found that the length of the Fermi arc decreases with increasing out-of-plane disorder by performing angle resolved photoemission spectroscopy (ARPES) measurements in the superconducting state of optimally doped R=La and Eu samples of Bi2Sr2-xRxCuOy. Since out-of-plane disorder stabilizes the antinodal pseudogap as was shown in our previous study of the normal state, the present results indicate that this antinodal pseudogap persists into the superconducting state and decreases the Fermi arc length. We think that the shrinkage of the Fermi arc reduces the superfluid density, which explains the large suppression of the superconducting transition temperature when out-of-plane disorder is increased.

    Original languageEnglish
    Pages (from-to)2989-2992
    Number of pages4
    JournalJournal of Physics and Chemistry of Solids
    Volume69
    Issue number12
    DOIs
    Publication statusPublished - 2008 Dec 1

    Keywords

    • C. Photoelectron spectroscopy
    • D. Fermi surface
    • D. Superconductivity

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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