Does the 2D Hubbard Model Really Show $d$-Wave Superconductivity?

Gang Su

Department of Physics, Graduate School Chinese Academy of Sciences P.O. Box 3908 Beijing 100039, China

Phys. Rev. Lett. 86, 3690 – Published 16 April 2001  Received 13 September 2000

In a recent Letter [1], Maier et al. concluded that they found, based on the dynamical cluster as well as noncrossing approximations on Green functions, a stable pure d-wave solution with off-diagonal long-range order (ODLRO) in the intermediate to strong coupling regime for the doped repulsive 2D Hubbard model, and given an estimation of maximum Tc being 150 K for doping x = 0.2

DOI:https://doi.org/10.1103/PhysRevLett.86.3690