Theory of a Disordered Heisenberg Model by the Coherent Potential Approximation
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概要
- 論文の詳細を見る
The averaged magnon Green function in a random Heisenberg ferromagnet which has two kinds of exchange integrals J_A and J_B randomly distributed is calculated by the coherent potential approximation. The density of states of magnon is calculated for various cases, and the correct localized mode is obtained in the low concentration limit. The critical concentration is obtained for two cases, J_A>0, J_B<0 and J_A>0,J_B=0. The magnetic properties for the two cases at the critical concentration are different from each other.
- 社団法人日本物理学会の論文
- 1973-12-05
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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ISHIKAWA Takuma
Department of Physics,Tokyo Institute of Technology
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Oguchi Takehiko
Department Of Physics Tokyo Institute Of Technology
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Ishikawa Takuma
Department Of Materials Science Iwakimeisei 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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Oguchi Takehiko
Department of Physics,Tokyo Institute of Technology
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Ishikawa Takuma
Department of Electrical and Electronic Engineering, College of Engineering, Nihon University, Tamura-machi, Koriyama, Fukushima 963-8642, Japan
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ONO Ikuo
Department of Physics,Tokyo Institute of Technology
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