Two-gap superconducting properties of alkaline-earth intercalated $A_x(N{H}_3)F{e}_{2}S{e}_2$ (A = Ba or Sr)

Yung-Yuan Hsu, Yu-Bo Li, Shou-Ting Jian +2

Superconducting properties were studied on high quality superconductors $B{a}_x(N{H}_3)F{e}_{2}S{e}_2$ ($T_c$ = 39 K) and $S{r}_x(N{H}_3)F{e}_{2}S{e}_2$ ($T_c$ = 44 K) prepared by…