Saturated Ferromagnetism from Statistical Transmutation in Two Dimensions

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The total spin of the ground state is calculated in the U -> infinity Hubbard model with uniform magnetic flux perpendicular to a square lattice, in the absence of Zeeman coupling. It is found that the saturated ferromagnetism emerges in a rather wide region in the space of the flux density ϕand the electron density n_e. In particular, the saturated ferromagnetism at ϕ= n_e is induced by the formation of a spin-1/2 boson, which is a composite of an electron and the unit flux quantum.
4 pages, 3 figures; final version

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/100574

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0506352
 http://arxiv.org/abs/cond-mat/0506352
 Phys. Rev. Lett. 96, 036406 (2006)
 doi:10.1103/PhysRevLett.96.036406

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arXiv