Pressure dependence of superconductive transition temperature on KxFe2-ySe2

International Conference on Strongly Correlated Electron Systems 2014

Fujita, Hidenori^1 ; Kagayama, Tomoko^1 ; Shimizu, Katsuya^1 ; Yamamoto, Yoshiya^2 ; Mizuki, Jun'Ichiro^2 ; Okazaki, Hiroyuki^3 ; Takano, Yoshihiko^3

KYOKUGEN, Osaka University, Osaka, Toyonaka

560-8531, Japan^1

Fac. of Sci., Kwansei Gakuin University, Mita, Hyougo

669-1337, Japan^2

NIMS, Ibaraki, Tsukuba

305-0047, Japan^3

关键词: Low temperatures;    Pressure dependence;    Superconductive transition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012070/pdf
DOI  :  10.1088/1742-6596/592/1/012070

来源: IOP

【 摘 要 】

We measured the electric resistance of KxFe2-ySe2which is said to have two SC dome. The measurement was performed at 1-14 GPa and at low temperature down to 1 K and the samples have different states of Fe-vacancy by annealing. From results of the measurements, we observed SC-like behaviour at over 11 GPa. The behaviour at higher temperature than Tcindicates that there are two SC phases.