Magnetic Impurities in the Pnictide Superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$

Sutirtha Mukhopadhyay, Sangwon Oh, A M Mounce +7

NMR measurements have been performed on single crystals of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ (x = 0, 0.45) and CaFe${}_2$As${}_2$ grown from Sn flux. The Ba-based pnictide crystals contain…