Localized Magnons in Ferromagnet with Impurity Spin. I
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概要
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The energies of the localized magnons around an impurity spin in a linear chain of ferromagnet in the case of S=S'=1/2 were calculated, wher S and S' are the magnitude of the host and impurity spin, respectively. Two types of the localized magnons were obtained; one is the s type which is the energy of the ground state when the impurity spin couples antiferromagnetically with its nearest neghboring host spins, and it is already obtained by Wang an Callen, and the other is the p type. An approximate method to get the ground state for S'>__-1 is proposed. The energies of the two localized magnons were calculated by solving approximately the Dyson equation for Green functions. The spin wave method by Ishii, Kanamori and Nakamura is discussed.
- 社団法人日本物理学会の論文
- 1969-01-05
著者
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OGUCHI Takehiko
Department of Physics, Tokyo University of Education
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ONO Ikuo
Department of Physics, Tokyo Institute of Technology
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Ono Ikuo
Department Of Physics Tokyo Metropolitan University
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Ono Ikuo
Department Of Physics Tokyo Institute Of Tchnology
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Oguchi Takehiko
Department Of Physics Tokyo Insitute Of Technology:the Technological University Of Nagaoka
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