Oxygen K-edge fine structure of TlBa2Ca1-xYxCu2O7 studied by electron energy loss spectroscopy

D. Shindo, K. Hiraga, S. Nakajima, M. Kikuchi, Y. Syono, N. Kobayashi, K. Hojou, T. Soga, S. Furuno, H. Otsu

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    19 Citations (Scopus)

    Abstract

    The fine structures of the oxygen K-edge in TlBa2Ca1-xYxCu2O7 (x=0, 0.8 and 1.0) with single Tl-O laye rs were investigated by electron energy loss spectroscopy (EELS). The peak corresponding to the hole state near the Fermi energy decreases with the increase of the Y content. Although a small density of the hole state is observable in the compound Tl1Ba2Ca0.2Y0.8Cu2O7, it s hows the semiconducting character. It was pointed out that the decrease of the hole content mainly results in the transition from superconductor to semiconductor in the compound Tl1Ba2Ca1-xYxCu2O7.

    Original languageEnglish
    Pages (from-to)794-796
    Number of pages3
    JournalPhysica C: Superconductivity and its applications
    Volume159
    Issue number6
    DOIs
    Publication statusPublished - 1989 Aug 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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