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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Received: 6 August 1997 / Accepted: 20 August 1997
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Ulmke, M. Ferromagnetism in the Hubbard model on fcc-type lattices. Eur. Phys. J. B 1, 301–304 (1998). https://doi.org/10.1007/s100510050186
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DOI: https://doi.org/10.1007/s100510050186