Prog. Theor. Phys. Vol. 51 No. 2 (1974) pp. 357-365
Impurity Atom in a Ferromagnetic Crystal with Anisotropic Coupling
Department of Physics, Faculty of Science and Technology, Science University of Tokyo, Noda, Chiba
*Department of Physics, Faculty of Science, Science University of Tokyo, Tokyo
(Received May 25, 1973)
A rigorous theory is presented of the localized magnons around an impurity spin which is substituted in a one-dimensional Heisenberg ferromagnet and couples with its nearest neighboring host spins by an anisotropic exchange interaction Exchange interactions between host spins are assumed to be isotropic. The p-type and two kinds of s-type localized magnons are obtained. The energies and wave functions of the localized magnons in the case J⊥' = 0 and J||
' = 0 are calculated, where J⊥' and J||
' are respectively the perpendicular and parallel components of the exchange integral between the host spins and the impurity spin.
DOI : 10.1143/PTP.51.357
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Citing Article(s) :
Progress of Theoretical Physics Vol. 55 No. 1 (1976) pp. 10-20
Localized Spin Wave State in a One-Dimensional Heisenberg Ferromagnet with a Boundary and Impurity Spins