Synergistic Polaron Formation in the Hubbard-Holstein Model at Small Doping

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dc.creatorMacridin, Alexandru
dc.creatorMoritz, Brian
dc.creatorJarrell, Mark
dc.creatorMaier, Thomas
dc.date2006-07-24
dc.date.accessioned2026-07-07T07:16:09Z
dc.date.available2026-07-07T07:16:09Z
dc.descriptionWe study the effect of dynamical Holstein phonons on the physics of the Hubbard model at small doping using the dynamical cluster approximation on a $2\times2$ cluster. Non-local antiferromagnetic correlations are found to significantly enhance the electron-phonon coupling, resulting in polaron formation for moderate coupling strengths. At finite doping, the electron-phonon coupling is found to strongly enhance the non-local spin correlations, indicating a synergistic interplay between the electron-phonon coupling and antiferromagnetic correlations. Although it enhances the pairing interaction, the electron-phonon coupling is found to decrease the superconducting transition temperature, due to the reduction in the quasiparticle fraction.
dc.descriptionaccepted for publication in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0607623
dc.identifierhttp://arxiv.org/abs/cond-mat/0607623
dc.identifierPhys. Rev. Lett. 97, 056402 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.056402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/113485
dc.subjectStrongly Correlated Electrons
dc.titleSynergistic Polaron Formation in the Hubbard-Holstein Model at Small Doping
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