Hund's-Rule Coupling Effect in Itinerant Ferromagnetism | Zendy

Takuya Okabe | Zendy

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Hund's-Rule Coupling Effect in Itinerant Ferromagnetism

Author(s) -

Takuya Okabe

Publication year - 1997

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.98.331

Subject(s) - ferromagnetism , physics , condensed matter physics , degeneracy (biology) , hubbard model , lattice (music) , coupling (piping) , quantum mechanics , superconductivity , materials science , metallurgy , bioinformatics , acoustics , biology

We present a general model which includes the ferromagnetic Kondo lattice andthe Hubbard model as special cases. The stability of the ferromagnetic state isinvestigated variationally. We discuss the mechanism of ferromagnetism inmetallic nickel, emphasizing the importance of orbital degeneracy and theeffect of the Hund's-rule coupling.Comment: 19 pages, 10 figures, to appear in Prog.Theor.Phy

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