Ir doping-induced superconductivity in the SmFeAsO system.
The 5d transition metal Ir is successfully doped for Fe in SmFeAsO to induce superconductivity with T(c) = 16 K at a doping level of approximately 15 atom %. Ir doping decreases the As-Fe-As bond angle, beta; this behavior is different from the change in beta for the system with doping charges in the charge-reservoir layers.
Chen
Yong Liang
YL
Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity R&D Center (SRDC), Mail Stop 165, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
Cheng
Cui Hua
CH
Cui
Ya Jing
YJ
Zhang
Han
H
Zhang
Yong
Y
Yang
Ye
Y
Zhao
Yong
Y