Anomalous Metal Interface Effect of Iron-based Superconductors

R. Tajima, Y. Miyamoto, T. Fujii, Azusa Matsuda

    Research output: Contribution to journalConference article

    Abstract

    We report the results of the Andreev spectroscopy of the (Co-doped Ba-122 single crystals)/metal/Pb junctions with a metal layer of Al, Pb, Ag, and Sn. We observed Andreev-like spectra for each metal layer and the junctions were identified to be (superconductor)/(normal metal) type. The spectra showed different behaviors for each metal layer. Especially in the case of Sn, the junction showed complex structure where different S/N type features were folded. We consider this behavior is due to a chemical reaction, in the interface between an iron-based superconductor and a layering metal.

    Original languageEnglish
    Article number012022
    JournalJournal of Physics: Conference Series
    Volume1054
    Issue number1
    DOIs
    Publication statusPublished - 2018 Jul 26
    Event30th International Symposium on Superconductivity, ISS 2017 - Tokyo, Japan
    Duration: 2017 Dec 132017 Dec 15

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    iron
    metals
    chemical reactions
    single crystals
    spectroscopy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Anomalous Metal Interface Effect of Iron-based Superconductors. / Tajima, R.; Miyamoto, Y.; Fujii, T.; Matsuda, Azusa.

    In: Journal of Physics: Conference Series, Vol. 1054, No. 1, 012022, 26.07.2018.

    Research output: Contribution to journalConference article

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    AU - Fujii, T.

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    AB - We report the results of the Andreev spectroscopy of the (Co-doped Ba-122 single crystals)/metal/Pb junctions with a metal layer of Al, Pb, Ag, and Sn. We observed Andreev-like spectra for each metal layer and the junctions were identified to be (superconductor)/(normal metal) type. The spectra showed different behaviors for each metal layer. Especially in the case of Sn, the junction showed complex structure where different S/N type features were folded. We consider this behavior is due to a chemical reaction, in the interface between an iron-based superconductor and a layering metal.

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