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arxiv: 1602.02278 · v1 · pith:C7PFI6LMnew · submitted 2016-02-06 · ❄️ cond-mat.str-el · cond-mat.stat-mech· cond-mat.supr-con

An organizing principle for two-dimensional strongly correlated superconductivity

classification ❄️ cond-mat.str-el cond-mat.stat-mechcond-mat.supr-con
keywords transitiondopingfirst-ordercorrelatedcrossoversdrivendynamicalfeatures
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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 $T_c^d$, the maximum of the condensation energy as a function of doping, the correlation between maximum $T_c^d$ 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.

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