Observation of Kosterlitz-Thouless spin correlations in the colossally magnetoresistive layered manganite $L{a}_{1.2}S{r}_{1.8}M{n}_2{O}_7$

S. Rosenkranz, R. Osborn, L. Vasiliu-Doloc +3

The spin correlations of the bilayer manganite $L{a}_{1.2}S{r}_{1.8}M{n}_2{O}_7$ have been studied using neutron scattering. On cooling within the paramagnetic state, we observe purely…