Exact many-electron ground states on the diamond Hubbard chain

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Exact ground states of interacting electrons on the diamond Hubbard chain in a magnetic field are constructed which exhibit a wide range of properties such as flat-band ferromagnetism and correlation induced metallic, half-metallic or insulating behavior. The properties of these ground states can be tuned by changing the magnetic flux, local potentials, or electron density.
4 pages, 2 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/134490

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0703818
 http://arxiv.org/abs/cond-mat/0703818
 Phys. Rev. Lett. 99, 026404 (2007).
 doi:10.1103/PhysRevLett.99.026404

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arXiv