Superconducting phase diagram of finite-layer nickelates Nd Ni O.

Following the successful prediction of the superconducting phase diagram for infinite-layer nickelates, here we calculate the superconducting vs. the number of layers for finite-layer nickelates using the dynamical vertex approximation. To this end, we start with density functional theory, and include local correlations non-perturbatively by dynamical mean-field theory for  = 2-7. For all , the Ni orbital crosses the Fermi level, but for  > 4 there are additional (, ) pockets or tubes that slightly enhance the layer-averaged hole doping of the orbitals beyond the leading 1/ contribution stemming from the valence electron count. We finally calculate for the single-orbital Hubbard model by dynamical vertex approximation.