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Abstracts
We examine extended bound states in a dilute limit of the extended Hubbard model on the two-dimensional square lattice. By solving exactly the two-body problem we have determined the binding energies, mobilities, and dispersion curves across the Brillouin zone for bound states of various symmetries. It turns out that the d-wave pairing is strongly favored by the nnn hopping and the intersite local pairs can have small effective masses, even in the case of strong binding.We have also found a possibility of extended s-d_{x^{2}-y^{2}} mixing of the bound states.
Discipline
Journal
Year
Volume
Issue
Pages
209-212
Physical description
Dates
published
2000-01
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv97z124kz