Electronic Character of Charge Order in Square-Planar Low-Valence Nickelates
Electronic Character of Charge Order in Square-Planar Low-Valence Nickelates
Charge order is a central feature of the physics of cuprate superconductors and is known to arise from a modulation of holes with primarily oxygen character. Low-valence nickelate superconductors also host charge order, but the electronic character of this symmetry breaking is unsettled. Here, using resonant inelastic x-ray scattering at …