Hund's rule and metallic ferromagnetism

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dc.creatorFroehlich, Juerg
dc.creatorUeltschi, Daniel
dc.date2004-04-21
dc.date2004-11-10
dc.date.accessioned2026-07-07T02:57:44Z
dc.date.available2026-07-07T02:57:44Z
dc.descriptionWe study tight-binding models of itinerant electrons in two different bands, with effective on-site interactions expressing Coulomb repulsion and Hund's rule. We prove that, for sufficiently large on-site exchange anisotropy, all ground states show metallic ferromagnetism: They exhibit a macroscopic magnetization, a macroscopic fraction of the electrons is spatially delocalized, and there is no energy gap for kinetic excitations.
dc.description17 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0404483
dc.identifierhttp://arxiv.org/abs/cond-mat/0404483
dc.identifierJ. Statist. Phys. 118, 973-996 (2005)
dc.identifierdoi:10.1007/s10955-004-2174-y
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23786
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.subjectMathematical Physics
dc.titleHund's rule and metallic ferromagnetism
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