Kink Structures of Spin-Polarized Electrons due to Electron--Magnon Scattering in Ferromagnetic State

We propose a model composed of spin-polarized itinerant electrons and bosonic spin-wave excitations, and study renormalization of the spin-polarized itinerant electron bands due to electron--magnon scattering. Spin-polarized kink structures are predicted in the normal state quasiparticle dynamics of ferromagnetic superconductor as UGe₂. It is suggested that
the angle-resolved photoemission experiment may be helpful in this respect.