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Saturated Ferromagnetism from Statistical Transmutation in Two Dimensions

Yasuhiro Saiga·Masaki Oshikawa
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Abstract

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.

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Yasuhiro Saiga, Masaki Oshikawa. 2006-02-05. Saturated Ferromagnetism from Statistical Transmutation in Two Dimensions. https://doi.org/10.1103/physrevlett.96.036406

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