Magnetic fluctuations and superconducting properties of CaKFe4As4 studied by 75As NMR

J. Cui, Q. -P. Ding, W. R. Meier +8

We report ${}^{75}$As nuclear magnetic resonance (NMR) studies on a new iron-based superconductor CaKFe${}_4$As${}_4$ with $T_{\mathrm{c}}$ = 35 K. ${}^{75}$As NMR spectra show two distinct lin…