Superconductivity of "1 1 1"-type iron arsenide compounds

被引:3
|
作者
Wang, X. C. [1 ]
Liu, Q. Q. [1 ]
Yang, L. X. [1 ]
Lv, Y. X. [1 ]
Gao, W. B. [1 ]
Zhang, S. J. [1 ]
Yu, R. C. [1 ]
Jin, C. Q. [1 ]
机构
[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
关键词
1 1 1" Iron superconductor; Transition temperature; Pressure effect;
D O I
10.1016/j.physc.2009.11.105
中图分类号
O59 [应用物理学];
学科分类号
摘要
"1 1 1"-type iron arsenide compounds AFeAs (A = Li, Na) were synthesized. These compounds crystallize into Cu2Sb type tetragonal layered structure with space group P4/nmm and show superconductivity with the transition temperature similar to 18 K for LiFeAs and similar to 23 K for NaFeAs. The effect of pressure on LiFeAs sample was studied. It was found that the Tc decreased almost linearly with increasing pressure and the pressure derivative dT(o)/dP was about -1.38 K/GPa. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:S307 / S308
页数:2
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