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The document discusses ferromagnetism in Hubbard models. It notes that ferromagnetism has better chances in two dimensions compared to three dimensions. Certain two-dimensional Hubbard models have been shown to exhibit low-density ferromagnetism. The fcc tight binding band structure has a diverging density of states at band edges, raising the possibility of ferromagnetism at low or high densities depending on parameters. However, one-dimensional models are not favorable for ferromagnetism despite a divergen

Author

Supriya

Language

EN