Decoupling Structural and Electronic Drivers of Superconductivity in Tetragonal La3Ni2O7+δ
The recent discovery of high-temperature superconductivity observed in pressurized La3Ni2O7-δ has stimulated intense interest in the superconducting mechanism of Ruddlesden–Popper nickelates. La3Ni2O7 exhibits a maximum superconducting transition temperature (Tc) near 80 K accompanied by a structural phase transition...