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

J. V. Alvarez; J. Gonzalez; F. Guinea; M. A. H. Vozmediano

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

J. V. Alvarez·J. Gonzalez·F. Guinea·M. A. H. Vozmediano

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Abstract

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.

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J. V. Alvarez, J. Gonzalez, F. Guinea, M. A. H. Vozmediano. 1998-04-15. Phase Diagram of High-T_c Superconductors from a Field Theory Model. https://arxiv.org/abs/cond-mat/9804153

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