Self-Consistent Dynamical Theory for the Anderson Lattice
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概要
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This paper presents formulation and results of a self-consistent dynamical theorywhich can describe the crossover from the local-moment state to the heavy-fermionstate with decreasing temperatures. The theory is an extension of the non-crossing ap-proximation (NCA) for the single-site model and incorporates the intersite interac-lion via self-consistent modification of the conduction-electron propagator. Detailednumerical results for single-particle excitations are presented which show that (i) thecooperative enhancement of the Kondo resonance occurs at temperatures higher thanthe Kondo temperature 7'.; (ii) a pseudogap develops around the energy of the Kondoresonance with decreasing temperatures; (iii) no new energy scale other than T. isgenerated in the heavy-fermion state.heavy fermion, Anderson lattice, self-consistent perturbation theory, Kondoeffect, Fermi liquid
- 社団法人日本物理学会の論文
- 1990-07-15
著者
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KURAMOTO Yoshio
Department of Physics, Tohoku University
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KASUYA Tadao
Department of Physics,Faculty of Science,Tohoku University
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Kasuya Tadao
Department Of Physics Faculty Of Science Tohoku University
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Kim C‐i
Department Of Physics Tohoku University
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Kim Chang-il
Department Of Physics Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Tohoku Uni
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Kasuya Tadao
Department Of Physics Tohoku Universityversity
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Kim Chang-il
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
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