Theoretical Study of Localized Spin Waves in a Ferrimagnet with ImpuritiesReport as inadecuate




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Abstract : In this paper, we theoretically investigate the impurity state in a ferrimagnet. We consider a bodycentered cubic crystal based on the model of two sublattices, A-sublattice and B-sublattice. The impurity spin Si is assumed to be not located at the interstitial but located at the A-sublattice point or B-sublattice point. Confining our interests to the case of one impurity and one spin-wave, we solve Our problem exactly. We have found several interesting features for our system. For example, the localized spin-wave appears in the band gap only when Si is located at A-sublattice point if SA





Author: O. Nagai M. Kang M. Tomita Y. Yamada H. Diep

Source: https://hal.archives-ouvertes.fr/



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