Orbital and spin character of doped carriers in infinite-layer nickelates
Orbital and spin character of doped carriers in infinite-layer nickelates
The discovery of superconductivity in infinite-layer nickelate thin films has produced fervent theoretical research about the doping evolution of their electronic structure. Here, by means of x-ray spectroscopy and atomic multiplet calculations, the authors show that doped holes are mainly introduced in Ni sites in a spin-singlet configuration. The dominant …