Theory for Superconductivity in Iron Pnictides at Large Coulomb U Limit

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dc.creatorChen, Wei-Qiang
dc.creatorYang, Kai-Yu
dc.creatorZhou, Yi
dc.creatorZhang, Fu-Chun
dc.date2008-08-24
dc.date2008-12-18
dc.date.accessioned2026-07-07T12:36:07Z
dc.date.available2026-07-07T12:36:07Z
dc.descriptionSuperconductivity in iron pnictides is studied by using a two-orbital Hubbard model in the large U limit. The Coulomb repulsion induces an orbital-dependent pairing between charge carriers. The pairing is found mainly from the scattering within the same Fermi pocket. The inter-pocket pair scatterings determine the symmetry of the superconductivity, which is extended s-wave at small Hund's coupling, and d-wave at large Hund's coupling and large U. The former is consistent with recent experiments of ARPES and Andreev reflection spectroscope.
dc.description4 pages, 4 figures, submit to prl
dc.identifierhttps://arxiv.org/abs/0808.3234
dc.identifierhttp://arxiv.org/abs/0808.3234
dc.identifierPhys. Rev. Lett. 102, 047006 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.047006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217988
dc.subjectSuperconductivity
dc.titleTheory for Superconductivity in Iron Pnictides at Large Coulomb U Limit
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