NMR evidence for inhomogeneous glassy behavior driven by nematic fluctuations in iron arsenide superconductors

A. P. Dioguardi, M. M. Lawson, B. T. Bush +12

We present ${}^{75}$As nuclear magnetic resonance spin-lattice and spin-spin relaxation rate data in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ and Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$ as a function o…