Optical Conductivity of Weakly Ferromagnetic Metals

The frequency and temperature dependences of the contributions to $\sigma(\omega)$ from impurity and phonon scattering are calculated using an extension to the paramagnon model due to Hirsch$^1$. This model includes both an on-site repulsion and a nearest neighbor ferromagnetic coupling. The Debye model is used for the phonons. The dependences of these contributions on the parameters of the model are presented. \vskip 8pt \noindent $^1$ J. E. Hirsch, Phys. Rev. B {\bf 40}, 2354 and 9061 (1989).