Using variational cluster perturbation theory we study the competition between d-wave superconductivity (dSC) and antiferromagnetism (AF) in the the t-t'-t''-U Hubbard model. Large scale computer calculations reproduce the overall ground state phase diagram of the high-temperature superconductors as well as the one-particle excitation spectra for both hole- and electron-doping. We identify clear signatures of the Mott gap as well as of AF and of dSC that should be observable in photoemission experiments.
@article{arxiv.cond-mat/0410162,
title = {Competition between Antiferromagnetism and Superconductivity in High $T_c$ Cuprates},
author = {David Senechal and P. -L. Lavertu and M. -A. Marois and A. -M. S. Tremblay},
journal= {arXiv preprint arXiv:cond-mat/0410162},
year = {2009}
}