We have developed a theory of Brillouin light scattering (BLS) from spin wave excitations in non-collinear magnetisation structures. We compare the results of calculated spectra for scattering from the spiral state found in exchange-coupled hard/soft CoPt/Co bilayers during reversal with experimental data. Both the Stokes/anti-Stokes peak intensity ratio is described, as well as the asymmetry in peak frequency between the Stokes and anti-Stokes spectra. It is shown that the frequency asymmetry arises naturally in the presence of a spin spiral structure. (c) 2004 Elsevier B.V. All rights reserved.
Crew, D., Stamps, R., Liu, H. Y., Wang, Z. K., Kuok, M. H., Ng, S. C., Barmak, K., Kim, J., & Lewis, L. H. (2005). Light scattering from spin wave excitations in a Co/CoPt exchange spring. Journal of Magnetism and Magnetic Materials, 290-291(1), 530-532. https://doi.org/10.1016/j.jmmm.2004.11.519