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arxiv: cond-mat/0502324 · v1 · submitted 2005-02-14 · ❄️ cond-mat.str-el

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

classification ❄️ cond-mat.str-el
keywords delocalizationtight-bindingappliedcoupled-clustereffectsenergyevaluationfilled
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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.

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