Suppression of superconductivity in the Hubbard model by buckling and breathing phonons

Alexandru MacRidin, Brian Moritz, M. Jarrell, Thomas Maier

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We study the effect of buckling and breathing phonons, relevant for cuprate superconductors, on the d-wave superconductivity in the two-dimensional Hubbard model by employing dynamical cluster Monte Carlo calculations. The interplay of electronic correlations and the electron-phonon interaction produces two competing effects: an enhancement of the effective d-wave pairing interaction, which favors d-wave superconductivity, and a strong renormalization of the single-particle propagator, which suppresses superconductivity. In the region of the parameter space relevant for cuprate superconductors, we find that the buckling and the breathing phonons suppress the superconductivity.

Original languageEnglish
Article number475603
JournalJournal of Physics Condensed Matter
Volume24
Issue number47
DOIs
StatePublished - Nov 28 2012

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