Spin fluctuation superconductivity beyond Migdal theorem in Hubbard systems in the pseudogap regime

L. Puig-Puig, F. López-Aguilar

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    Abstract

    We study a strong-coupling theory beyond the Migdal theorem, considering a spin fluctuation coupling potential within an s-wave symmetry in strongly correlated systems in a pseudogap regime. The influence of vertex effects on both the potential and the solutions of the resulting Eliashberg-like equations is discussed for the different band conditions and coupling strength.
    Original languageEnglish
    Pages (from-to)135-140
    JournalEurophysics Letters
    Volume33
    Issue number2
    DOIs
    Publication statusPublished - 10 Jan 1996

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