Correlated electronic structure of electron-doped infinite-layer nickelates

Infinite-layer nickelates RNiO₂ (R= La, Pr, Nd) offer a new platform for investigating the long-standing problem of high-temperature superconductivity in the cuprates. Superconductivity in RNiO₂ has been realized upon hole doping with maximal T_c's at ~ 15 K at ~d^8.8 filling. This discovery triggered an immense amount of experimental and theoretical work on the hole-doped side of their phase diagram. However, the electron-doped side remains unexplored. Here, we study the correlated electronic structure of electron-doped infinite-layer nickelates using density-functional theory plus dynamical mean-field theory (DFT+DMFT). By analyzing trends in the spectral function and orbital occupations with doping concentration we draw connections to the recent discovery of superconductivity in the parent RNiO₂ phases.