Quenched Fe Moment in the Collapsed Tetragonal Phase of Ca${}_{1-x}$Pr${}_x$Fe${}_2$As${}_2$

Long Ma, G. F. Ji, J. Dai +3

We report ${}^{75}$As NMR studies on single crystals of rare-earth doped iron pnictides superconductor Ca${}_{1-x}$Pr${}_x$Fe${}_2$As${}_2$ ($x$=0.075 and 0.15). The ${}^{75}$As spectra…