Magnetization Process in Heavy Electron Systems : Condensed Matter: Electronic Properties, etc.
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概要
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The magnetization process in the one-dimensional Kondo lattice model away from half filling (n_c < 1) is studied on the basis of the density matrix renormalization group method. A rapid increase of the magnetization is caused by the collapse of the intersite incommensurate correlation of f spins. On the contrary, the intrasite f-c singlet correlation survives in the larger magnetic field. The crossover from large to small Fermi surfaces for majority and minority spins is observed, whereas the Fermi surfaces are always contributed by f spins. A magnetization plateau appears with the magnitude of I - n_c. The lower end and the upper end of the plateau are related to the coherence temperature and the Kondo temperature, respectively, which play the essential role in heavy electron systems as the characteristic energies.
- 社団法人日本物理学会の論文
- 2000-09-15
著者
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Watanabe Shinji
Department Of Applied Physics University Of Tokyo
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Watanabe Shinji
Department Of Physics Tohoku University:(present)department Of Physical Science Osaka University
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