Fermi-liquid parameters and superconducting instabilities of a generalized t-J model
Marco Grilli, Gabriel Kotliar
DOI 10.1103/PhysRevLett.64.1170 · Physical Review Letters
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Abstract
We investigate the Fermi-liquid parameters and the superconducting instabilities of the t-J model using a systematic large-N expansion. We compare our results with the predictions of the Brinkman-Rice picture. The leading superconducting instability is in the d-wave channel and has cosKx-cosKy symmetry and increases with doping.
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