Ordered States in Periodic Anderson Hamiltonian with Orbital Degeneracy and with Large Coulomb Correlation
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概要
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Ordered states of a periodic Anderson Hamiltonian with large Coulombcorrelation and with orbital degeneracy of localized levels are theoreticallyinvestigated. When the number of f electrons is nc:arly one per site, and whenthe exchange interaction is antiferromagnetic as a whole, it is predicted that anantiferromagnetic type ordering occurs in the orbital order of localized levels ata certain low temperature accompanied by the lattice distortion due to the Jahn-Teller effect, and that a ferromagnetic or an antiferromagnetie ordering of spin,if it occurs, occurs at a lower tentperature. One of the most characteristic featuresof this orbital ordered state is a strong coupling between orbital antiferromagneticmoments and spin ferromagnetic ones. It is tried to explain the experimental datxof CeB. with a model that a quartet is the ground multiplet of localized levels.
- 社団法人日本物理学会の論文
- 1983-11-15
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