arxiv: 1108.0029 · v2 · pith:REQJX6IRnew · submitted 2011-07-29 · ❄️ cond-mat.supr-con

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

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Minoru Nohara

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classification ❄️ cond-mat.supr-con

keywords layerssuperconductivitycompoundca10compoundsfe2-xptxas2fe2as2iron-based

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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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Superconductivity at 38 K in Iron-Based Compound with Platinum-Arsenide Layers Ca10(Pt4As8)(Fe2-xPtxAs2)5

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