%0 journal article
%@ 0003-6951
%A Gruenwald, A.T.D., Wildes, A.R., Schmidt, W., Tartakovskaya, E.V., Nowak, G., Theis-Broehl, K., Schreyer, A.

%D 2010
%J Applied Physics Letters
%N 19
%P 192505 
%R doi:10.1063/1.3428425
%T Neutron scattering measurements of magnetic excitations in Gd/Y superlattices
%U https://doi.org/10.1063/1.3428425
19 
%X Neutron inelastic scattering has been used to measure the magnetic excitations as a function of applied magnetic field in an antiferromagnetically coupled Gd/Y superlattice. The excitations were measured along the c-axis, which is parallel to the normal of the interfaces and the sample growth direction. Dispersive spin waves were unambiguously detected on the application of a magnetic field. The spin waves are shown to renormalize with field following a basic model drawn from standard spin wave theory. The model required no free parameters aside from an initial amplitude.