Incommensurate spin fluctuations in hole-overdoped superconductor KFe2As2

C. H. Lee, K. Kihou, H. Kawano-Furukawa +9

A neutron scattering study of heavily hole-overdoped superconducting KFe${}_2$As${}_2$ revealed a well-defined low-energy incommensurate spin fluctuation at [$\pi (1\pm 2\delta$),0] with $\delta$ =…