Nature of carriers in one-dimensional correlated electron systems

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Electron densities at the edge site in one-dimensional Hubbard model and t-J model are studied by using the Bethe ansatz solutions and exact diagonalization method. It is found that the boundary is electron-attractive, or equivalently hole-repulsive, near half-filling. We propose a new criterion to determine whether the carriers in a strongly correlated system are electron-like or hole-like depending on the electronic behavior at the boundary.
4 pages, 3 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/20815

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0302031
 http://arxiv.org/abs/cond-mat/0302031

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arXiv