Phase Diagram of High-Tc Superconductors from a Field Theory Model
نویسنده
چکیده
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. Typeset using REVTEX 1
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تاریخ انتشار 2008