Site-dependent NMR Spin-lattice Relaxation in the Superconducting State of an Iron Pnictide Superconductor

L. Ma, J. Zhang, G. F. Chen +4

In a conventional superconductor, the spin-lattice relaxation rate on all nuclei should have the same temperature dependence below Tc. We performed ${}^{23}$Na, ${}^{75}$As, and $^{59}…