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

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.

5 pages, revtex, 4 postscript figures in separate files

Cited by in corpus (31)

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