Evolution of the dynamical pairing across the phase diagram of a strongly correlated high-temperature superconductor

Abstract

We study the dynamics of the Cooper pairing across the T=0 phase diagram of the two-dimensional Hubbard Model, relevant for high-temperature superconductors, using a cluster extension of dynamical mean field theory. We find that the superconducting pairing function evolves from an unconventional form in the over-doped region into a more conventional boson-mediated retarded form in the under-doped region of the phase diagram. The boson, however, promotes the rise of a pseudo-gap in the electron density of states rather than a superconducting gap as in the standard theory of superconductivity. We discuss our results in terms of Mott-related phenomena, and we show that they can be observed in tunneling experiments.

4.1 pages, 3 figures, revised version for publication

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Cited by in corpus (8)

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• Energetics of superconductivity in the two dimensional Hubbard model
• Intermediate Coupling Model of the Cuprates
• Pairing Glue in the Two Dimensional Hubbard Model
• Quasiparticle Properties of the Superconducting State of the Two Dimensional Hubbard Model
• Antagonistic effects of nearest-neighbor repulsion on the superconducting pairing dynamics in the doped Mott insulator regime
• Superconductivity in the two-dimensional Hubbard model with cellular dynamical mean-field theory: a quantum impurity model analysis
• Dynamics of superconducting pairs in the two-dimensional Hubbard model