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Ferromagnetism in the Hubbard Model on fcc-type lattices

Martin Ulmke
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Abstract

The Hubbard model on fcc-type lattices is studied in the dynamical mean-field theory of infinite spatial dimensions. At intermediate interaction strength finite temperature Quantum Monte Carlo calculations yield a second order phase transition to a highly polarized, metallic ferromagnetic state. The Curie temperatures are calculated as a function of electronic density and interaction strength. A necessary condition for ferromagnetism is a density of state with large spectral weight near one of the band edges.

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Martin Ulmke. 1998-04-15. Ferromagnetism in the Hubbard Model on fcc-type lattices. https://doi.org/10.1007/s100510050186

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