Spin excitations used to probe the nature of the exchange coupling in the magnetically ordered ground state of Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$

R. A. Ewings, T. G. Perring, O. Sikora +3

We have used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$, in its magnetic and…