Abstract:We present calculations of the dynamic susceptibility for a non-uniform ferromagnetic metal system with interatomic exchange included. The results obtained are general and can be applied t o ordered alloys, thin films, and other non-uniform media.We consider a system described by the Hamiltonian H =xtij aldajd + 7 u . n . n. -1 ~. . $ . 3 .where a:' is the creation operator for a n electron of spin 0 at the lattice site i, t.. is the hopping integral, U. is the intraatomic Coulomb integral, and J.. is the inte… Show more
“…The possibility of the appearance of surface spin waves has also been discussed [5] and the complete dispersion relation for the surface modes has been found [6]. The analytic expression for the thin-film dynamic susceptibility in the case when the exchange interactions between different lattice sites are taken into account, has also been obtained [7]. I n all papers dealing with the dynamic susceptibility of thin films, which have appeared so far within the framework of the itinerant electron model, only the one-band model has been used.…”
“…The possibility of the appearance of surface spin waves has also been discussed [5] and the complete dispersion relation for the surface modes has been found [6]. The analytic expression for the thin-film dynamic susceptibility in the case when the exchange interactions between different lattice sites are taken into account, has also been obtained [7]. I n all papers dealing with the dynamic susceptibility of thin films, which have appeared so far within the framework of the itinerant electron model, only the one-band model has been used.…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.