Superconductivity in the two-dimensional extended Hubbard model with pair-hopping interaction

Authors
Robaszkiewicz, S Czart, WR
Citation
S. Robaszkiewicz et Wr. Czart, Superconductivity in the two-dimensional extended Hubbard model with pair-hopping interaction, ACT PHY P B, 32(10), 2001, pp. 3267-3272
Citations number
20
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
05874254 → ACNP
Volume
32
Issue
10
Year of publication
2001
Pages
3267 - 3272
Database
ISI
SICI code
0587-4254(200110)32:10<3267:SITTEH>2.0.ZU;2-2
Abstract
The extended Hubbard model with pair-hopping (intersite charge exchange) in teraction is studied. The effects of phase fluctuations on the s-wave super conductivity of this system are discussed within the Kosterlitz-Thouless sc enario. For two-dimensional (SQ) lattice the evolution of the superconducti ng critical temperature T-c, the pair formation temperature T-p and the Uem ura-type plots (i.e. the plots of T-c vs superfluid stiffness at T = 0) wit h pairing strength is determined.