Phase Diagram of High-T_c Superconductors from a Field Theory Model

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The renormalization group approach to correlated fermions is used to determine the phase diagram of the oxide cuprates modeled by the t-t' Hubbard model at the Van Hove filling. Spin-dependent interactions give rise to instabilities corresponding to ferromagnetic, antiferromagnetic and d-wave superconducting phases. Antiferromagnetism and d-wave superconductivity arise from the same interactions, and compete in the same region of parameter space.
Latex, 39 pages,12 figures

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Superconductivity, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/28205

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9804153
 http://arxiv.org/abs/cond-mat/9804153

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arXiv