Common origin of the two types of magnetic fluctuations in iron chalcogenides

Songxue Chi, J. A. Rodriguez-Rivera, J. W. Lynn +5

We use inelastic neutron scattering to study the low energy spin excitations in moderately doped non-superconducting Fe${}_{1.01}$Te${}_{0.72}$Se${}_{0.28}$. The spin excitations in this…