Electronic and spin dynamics in the insulating iron pnictide NaFe${}_{0.5}$Cu${}_{0.5}$As

Shunhong Zhang, Yanjun He, Jia-Wei Mei +2

NaFe${}_{0.5}$Cu${}_{0.5}$As represents a rare exception in the metallic iron pnictide family, in which a small insulating gap is opened. Based on first-principles study, we provide a…