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

被引:99
作者
Kakiya, Satomi [1 ,2 ]
Kudo, Kazutaka [1 ,2 ]
Nishikubo, Yoshihiro [1 ,2 ]
Oku, Kenta [3 ]
Nishibori, Eiji [3 ]
Sawa, Hiroshi [3 ]
Yamamoto, Takahisa [4 ]
Nozaka, Toshio [5 ]
Nohara, Minoru [1 ,2 ]
机构
[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan
[2] Transformat Res Project Iron Pnictides TRIP, JST, Tokyo 1020075, Japan
[3] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
[4] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan
[5] Okayama Univ, Dept Earth Sci, Okayama 7008530, Japan
基金
日本学术振兴会;
关键词
Iron-based superconductors; Ca-Fe-Pt-As; SPRING-8;
D O I
10.1143/JPSJ.80.093704
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report superconductivity in novel iron-based compounds Ca-10(PtnAs8)(Fe2-xPtxAs2)(5) with n = 3 and 4. Both compounds crystallize in triclinic structures (space group P (1) over bar), in which Fe2As2 layers alternate with PtnAs8 spacer layers. Superconductivity with a transition temperature of 38K is observed in the n = 4 compound with a Pt content of x similar or equal to 0: 36 in the Fe2As2 layers. The compound with n = 3 exhibits superconductivity at 13 K.
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页数:4
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