Superconductivity in the Extended Hubbard Model with More Than Nearest-Neighbour Contributions

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dc.creatorSzabo, Zs.
dc.creatorGulacsi, Zs.
dc.date1998-08-25
dc.date.accessioned2026-07-07T03:11:23Z
dc.date.available2026-07-07T03:11:23Z
dc.descriptionSuperconducting phase diagram of the extended Hubbard model supplemented with interaction and hopping terms exceeding nearest neighbour distance in range is analysed systematically at different band-filling and temperature values in a mean-field approximation. The obtained results clearly underline the importance of next-nearest neighbour terms in developing the main superconducting properties of the model system. In particular, the emergence of superconducting phases of different symmetry at a given point of the phase diagram, critical temperatures $T_c$, zero temperature gap amplitude values $Δ_{0}$, $Δ_{0}/T_{c}$ ratios, doping and temperature dependences are all strongly influenced by next-nearest neighbour contributions.
dc.description15 pages, 8 embedded ps figures, revtex, final version has been published in Phil. Mag. B
dc.identifierhttps://arxiv.org/abs/cond-mat/9808279
dc.identifierhttp://arxiv.org/abs/cond-mat/9808279
dc.identifierPhil. Mag. B, Vol.76, No.6, 911 (1997)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28556
dc.subjectStrongly Correlated Electrons
dc.titleSuperconductivity in the Extended Hubbard Model with More Than Nearest-Neighbour Contributions
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