Eliashberg equations with momentum-dependent kernals for the two-dimensional Hubbard model

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Journal of Superconductivity

DOI:https://doi.org/10.1007/BF00728430· OSTI ID:269732

Mierzejewski, M; Zielinski, J; Entel, P ^[1]

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1. Gerhard-Mercator-Univeitat, Duisburg (Germany)

The authors discuss the impact of the strong electron phonon interactions on the physical properties of correlated electrons in the two-dimensional Hubbard model. An easy access to the physical properties of the superconducting state is obtained by solving the Eliashberg equations with explicit momentum-dependent kernels. In order to facilitate the numerical procedure to solve these equations, correlations are treated within the Gutzwiller approximation (i.e., mean-field-slave boson approximation). The authors results strongly support the view that d-wave symmetry is the most important feature of the superconducting state in the copper oxides. A possible extension beyond the mean field approximation is also presented.

• Sponsoring Organization: USDOE
• OSTI ID: 269732
• Journal Information: Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 1 Vol. 9; ISSN JOUSEH; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CORRELATIONS
ELECTRON-PHONON COUPLING
ELECTRONS
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
TWO-DIMENSIONAL CALCULATIONS