Delocalization in Tight-Binding Hamiltonians: A Modified Coupled-Cluster Based Investigation

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The nature of delocalization in a 1D system ruled by a tight-binding Hamiltonian is investigated. Using a local evaluation of the ground state energy, it is shown that the range of the delocalization effects is rather limited. The method is applied to 1/2 and 1/4 filled systems.
7 pages, 3 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/25867

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502324
 http://arxiv.org/abs/cond-mat/0502324

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arXiv