Temperature Dependence of Conductivity in (La, Sr)MnO_3
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概要
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Using the Kondo lattice model with classical spins in infinite dimension, conductivity in the perovskite-type 3d transition-metal oxide (La, Sr)MnO_3 is theoretically studied. Green's functions as well as spontaneous magnetization are obtained exactly on the Bethe lattice as a function of temperature. Conductivity is calculated from the Kubo formula. Below the Curie temperature, resistivity as a function of magnetization is in good agreement with the experimental data. Anomalous behavior in the temperature dependence of the optical conductivity observed in (La, Sr)MnO_3 is also explained.
- 社団法人日本物理学会の論文
- 1995-09-15
著者
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Furukawa Nobuo
Institute for Solid State Physics, University of Tokyo
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Furukawa Nobuo
Department Of Physics And Mathematics Aoyama Gakuin University:multiferroics Project (mf) Erato Japa
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Furukawa Nobuo
Department Of Physics Aoyama Gakuin University
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Furukawa Nobuo
Institute For Solid State Physics University Of Tokyo
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Furukawa N
Department Of Physics And Mathematics Aoyama Gakuin University:multiferroics Project (mf) Erato Japa
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Furukawa Nobuo
Institute For Sokid State Physics University Of Tokyo
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Furukawa Nobuo
Department Of Physics Aoyama Gakkuin University
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