Superconducting, Ferromagnetic and Antiferromagnetic Phases in thet-t′Hubbard Model
- 15 June 1998
- journal article
- letter
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 67 (6) , 1868-1871
- https://doi.org/10.1143/jpsj.67.1868
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.Keywords
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