Ring Exchange Mechanism for Triplet Superconductivity in a Two-Chain Hubbard Model: Possible Relevance to Bechgaard Salts

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dc.creatorOhta, Y.
dc.creatorNishimoto, S.
dc.creatorShirakawa, T.
dc.creatorYamaguchi, Y.
dc.date2005-04-08
dc.date.accessioned2026-07-07T03:04:38Z
dc.date.available2026-07-07T03:04:38Z
dc.descriptionThe density-matrix renormalization group method is used to study the ground state of the two-chain zigzag-bond Hubbard model at quarter filling. We show that, with a proper choice of the signs of hopping integrals, the ring exchange mechanism yields ferromagnetic spin correlations between interchain neighboring sites, and produces the attractive interaction between electrons as well as the long-range pair correlations in the spin-triplet channel, thereby leading the system to triplet superconductivity. We argue that this novel mechanism may have possible relevance to observed superconductivity in Bechgaard salts.
dc.identifierhttps://arxiv.org/abs/cond-mat/0504191
dc.identifierhttp://arxiv.org/abs/cond-mat/0504191
dc.identifierPhys. Rev. B 72, 012503 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.012503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26161
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleRing Exchange Mechanism for Triplet Superconductivity in a Two-Chain Hubbard Model: Possible Relevance to Bechgaard Salts
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