Competing exchange interactions on the verge of a metal-insulator transition in the two-dimensional spiral magnet Sr${}_3$Fe${}_2$O${}_7$

J. -H. Kim, Anil Jain, M. Reehuis +12

We report a neutron scattering study of the magnetic order and dynamics of the bilayer perovskite Sr${}_3$Fe${}_2$O${}_7$, which exhibits a temperature-driven metal-insulator transition…