Anomalous Metal Interface Effect of Iron-based Superconductors

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

Research output: Contribution to journalConference articlepeer-review


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
Issue number1
Publication statusPublished - 2018 Jul 26
Externally publishedYes
Event30th International Symposium on Superconductivity, ISS 2017 - Tokyo, Japan
Duration: 2017 Dec 132017 Dec 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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