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Mattis, Daniel C. | Effect of band structure on ferromagnetism* | We extend Nagaoka's study of the ferromagnetism of nearly half-filled bands in the infinite-repulsion limit of the Hubbard model by including next-nearest-neighbor tight-binding overlap matrix elements K2. Particles can now get past one another, even in one dimension. We find corroboration of Nagaok... | Eigenstates; Spin waves | 1974-08 |
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