Superconductivity at 38 K in Iron-Based Compound with Platinum-Arsenide Layers Ca10(Pt4As8)(Fe2-xPtxAs2)5
Satomi Kakiya, Kazutaka Kudo, Yoshihiro Nishikubo, Kenta Oku, Eiji, Nishibori, Hiroshi Sawa, Takahisa Yamamoto, Toshio Nozaka, and Minoru Nohara
TL;DR
This paper reports the discovery of superconductivity at 38 K in a novel iron-based compound with platinum-arsenide layers, expanding the family of high-temperature superconductors.
Contribution
It introduces new iron-based superconductors with platinum-arsenide layers and reports their structural and superconducting properties.
Findings
Superconductivity at 38 K in Ca10(Pt4As8)(Fe2-xPtxAs2)5
Structural characterization of triclinic compounds
Superconductivity observed in compounds with different layer configurations
Abstract
We report superconductivity in novel iron-based compounds Ca10(PtnAs8)(Fe2-xPtxAs2)5 with n = 3 and 4. Both compounds crystallize in triclinic structures (space group P-1), in which Fe2As2 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.
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