Ferromagnetic alloys: A Cluster-Bethe-lattice approach |
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Authors: | Gerardo A. Gonzalez de la Cruz C.E.T.Gonçalves da Silva |
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Affiliation: | Instituto de Fisica, Universidade Estadual de Campinas, C.P. 1170 - 13100 Campinas - SP - Brasil |
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Abstract: | We apply the Cluster-Bethe-lattice method to calculate the local density of one-magnon states for a binary substitutional ferromagnetic alloy. Short range order effects for the alloy are included. Simple clusters of one atom and one atom plus its nearest neighbors are studied. We show that, for the latter type of cluster, there are localized excitations the energies of which fall outside the continuum of excitations. |
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