Abstract
AbstractThe spin wave stiffness constant D of ferromagnetic binary metallic alloys is derived at zero temperature from a random Hubbard model including diagonal and off‐diagonal disorder. The fluctuations of the hopping integrals are restricted to the additive limit. Vertex corrections to D due to the randoness of the transverse spin current are calculated in an extended CPA. D is renormalized by electron‐electron correlations within the coherent horizontal ladder approximation. Stability and damping of the spin waves, Ward relations, and the electrical conductivity are discussed.
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