An organizing principle for two-dimensional strongly correlated superconductivity.

TitreAn organizing principle for two-dimensional strongly correlated superconductivity.
Type de publicationJournal Article
Nouvelles publications2016
AuteursFratino, L, Sémon, P, Sordi, G, Tremblay, A-MS
JournalScientific reports
Volume6
Pagination22715
ISBN2045-2322
Résumé

Superconductivity in the cuprates exhibits many unusual features. We study the two-dimensional Hubbard model with plaquette dynamical mean-field theory to address these unusual features and relate them to other normal-state phenomena, such as the pseudogap. Previous studies with this method found that upon doping the Mott insulator at low temperature a pseudogap phase appears. The low-temperature transition between that phase and the correlated metal at higher doping is first-order. A series of crossovers emerge along the Widom line extension of that first-order transition in the supercritical region. Here we show that the highly asymmetric dome of the dynamical mean-field superconducting transition temperature , the maximum of the condensation energy as a function of doping, the correlation between maximum and normal-state scattering rate, the change from potential-energy driven to kinetic-energy driven pairing mechanisms can all be understood as remnants of the normal state first-order transition and its associated crossovers that also act as an organizing principle for the superconducting state.

URLhttp://www.ncbi.nlm.nih.gov/pubmed/26964524 http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=PMC4786811
DOI10.1038/srep22715
PubMed ID26964524
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