We study spin-fluctuation-mediated superconductivity in the one-band Hubbard model. Higher order effective interactions in U give rise to a superconducting instability which is very sensitive to changes in the Fermi surface topology arising as a function of doping and changes in the band structure. We show the superconducting phase diagram as a function of doping and next-nearest neighbor hopping in the limit of very small Coulomb interaction strength and discuss peculiarities arising at the phase boundaries separating different superconducting domains.
@article{arxiv.1605.07119,
title = {Superconducting phase diagram of the paramagnetic one-band Hubbard model},
author = {Andreas Kreisel and Astrid T. Roemer and Peter J. Hirschfeld and Brian M. Andersen},
journal= {arXiv preprint arXiv:1605.07119},
year = {2016}
}