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

L. Puig-Puig; F. López-Aguilar

doi:10.1209/epl/i1996-00303-0

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 language	English
Pages (from-to)	135-140
Journal	Europhysics Letters
Volume	33
Issue number	2
DOIs	https://doi.org/10.1209/epl/i1996-00303-0
Publication status	Published - 10 Jan 1996

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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.",

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AB - 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.

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