Two different superconducting states and possible antiferromagnetic quantum critical points in S-doped FeSe under pressure

T. Kuwayama, K. Matsuura, Y. Mizukami +5

We performed ${}^{77}$Se-NMR measurements on FeSe${}_{1-x}$S${}_x$, ($x$ = 0.12) up to 3.0 GPa at an applied magnetic field of 6.02 T, and found that the superconducting (SC) phase exhib…