Superconductivity in potassium and ammonia co-intercalated FeSe_(1-x)Te_x

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成果类型：

期刊论文

作者：

Xiao, BinBin;Wang, NaiZhou;Shang, Chao;Meng, FanBao;Ding, JianWen;...

通讯作者：

Lei, Bin

作者机构：

[Xiao, BinBin; Ding, JianWen] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.

[Xiao, BinBin; Ding, JianWen] Xiangtan Univ, Inst Nanophys & Rare Earth Luminescence, Xiangtan 411105, Peoples R China.

[Xiao, BinBin] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.

[Lei, Bin; Shang, Chao; Meng, FanBao; Wang, NaiZhou; Luo, XiGang] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.

[Lei, Bin; Shang, Chao; Meng, FanBao; Wang, NaiZhou; Luo, XiGang] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China.

通讯机构：

[Lei, Bin] U

Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.

Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China.

语种：

英文

关键词：

pnictides and chalcogenides;properties of superconductors;effects of pressure;methods of materials synthesis and materials processing

期刊：

中国科学：物理学、力学、天文学英文版

ISSN：

1674-7348

年：

2019

卷：

期：

页码：

047411

DOI：

10.1007/s11433-018-9302-6

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11374252, 11604278, 11534010, 91422303]; National Key R&D Program of the MOST of China [2017YFA0303001]; Hefei Science Center Chinese Academy Sciences [2016HSC-IU001]; Strategic Priority Research Program (B) of the Chinese Academy of SciencesChinese Academy of Sciences [XDB04040100]

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本校为其他机构

院系归属：

物理与电子工程学院

摘要：

The origin of the ~40 and ~30 K superconducting phases in the metal-intercalated FeSe superconductors is still unclear. We report the synthesis of K0:3(NH3)y(FeSe1−xTex)2 and K0:6(NH3)y(FeSe1−xTex)2 with x=0-0.6 by using the liquid ammonia method at room temperature. The superconducting transition temperature Tc of the former remains about 43 K for all the nominal Te content less than 0.3, while that of the latter is about 30 K and obviously decreases with Te doping. Superconductivity disappears for x ≥0.4 in both systems. Except for the dif...

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Superconductivity in potassium and ammonia co-intercalated FeSe_(1-x)Te_x

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