Anisotropy of incommensurate magnetic excitations in slightly overdoped Ba${}_{0.5}$K${}_{0.5}$Fe${}_2$As${}_2$ probed by polarized inelastic neutron scattering experiments

N. Qureshi, C. H. Lee, K. Kihou +3

Polarized neutron scattering experiments on the slightly overdoped superconductor Ba${}_{0.5}$K${}_{0.5}$Fe${}_2$As${}_2$ reveal broad magnetic resonance scattering peaking at approximatel…