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Superconducting, ferromagnetic and antiferromagnetic phases in the t-t' Hubbard model

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

We apply a renormalization group approach to the determination of the phase diagram of the t-t' Hubbard model at the Van Hove filling, as function of t'/t, for small values of U/t. The model presents 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. 1997-05-16. Superconducting, ferromagnetic and antiferromagnetic phases in the t-t' Hubbard model. https://doi.org/10.1143/jpsj.67.1868

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