Itinerancy effects on spin correlations in one-dimensional Mott insulators

We consider spin correlations in the one-dimensional (1D) half-filled repulsive Hubbard model. For very large values of the on-site repulsion U the spin correlations are dominated by virtual hopping processes of electrons and are described in terms of a spin-1/2 Heisenberg chain. As U is decreased r...

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Bibliografische gegevens
Hoofdauteurs: Bhaseen, M, Essler, F, Grage, A
Formaat: Journal article
Taal:English
Gepubliceerd in: 2005

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