Superconductivity at 38 K in iron-based compound with platinum-arsenide layers Ca10(Pt4As8)(Fe2-xPt xAs2)5

Satomi Kakiya, Kazutaka Kudo, Yoshihiro Nishikubo, Kenta Oku, Eiji Nishibori, Hiroshi Sawa, Takahisa Yamamoto, Toshio Nozaka, Minoru Nohara

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Abstract

We report superconductivity in novel iron-based compounds Ca 10(PtnAs8)(Fe2-xPt xAs2)5 with n = 3 and 4. Both compounds crystallize in triclinic structures (space group PĪ), in which Fe 2As2 layers alternate with PtnAs8 spacer layers. Superconductivity with a transition temperature of 38 K is observed in the n = 4 compound with a Pt content of x ∼ 0.36 in the Fe2As2 layers. The compound with n - 3 exhibits superconductivity at 13 K.

Original languageEnglish
Article number093704
JournalJournal of the Physical Society of Japan
Volume80
Issue number9
DOIs
Publication statusPublished - Sep 2011

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Keywords

  • Ca-Fe-Pt-As
  • Iron-based superconductors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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