Low Energy, Coherent, Stoner-like Excitations in CaFe${}_2$As${}_2$

L. Ke, M. van Schilfgaarde, J. J. Pulikkotil +2

Using linear-response density-functional theory, magnetic excitations in the striped phase of CaFe${}_2$As${}_2$ are studied as a function of local moment amplitude. We find a new…