A Quantum Theory of Double Exchange. I
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概要
- 論文の詳細を見る
Metallic double-exchange ferromagnets such as doped LaMnO_3 are investigatd on the basis of an efffective Hamiltonian derived from the s-d model Hamiltonian. Resistance at low temperatures is calculated in the spin wave approximation and it is found to be proportional to T^<9/2>. Magnetic behaviors of the system at finite temperatures are examined by the use of a simple molecular field theory. A magnetization-temperature curve which firs well the experimental data of Leung et al. is obtained. Resistance and magneto-resestance are also studied.
- 社団法人日本物理学会の論文
- 1972-07-05
著者
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Kubo Kenn
Department Of Physics And Mathematics Aoyama Gakuin University
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Kubo Kenn
Department Of Physics University Of Tokyo
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OHATA Nagao
Department of Physics, University of Tokyo
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Ohata Nagao
Department Of Physics University Of Tokyo:(present Address) Department Of Physics Aoyama Gakuin Univ
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Ohata Nagao
Department Of Physics Aoyama Gakuin University
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KUBO Kenn
Department of Physics and Astronomy,Michigan State University
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