Stabilizing and Tuning Superconductivity in La${}_3$Ni${}_2$O${}_{7-\delta }$ Films: Oxygen Recycling Protocol Reveals Hole-Doping Analogue

Lifen Xiang, Siyi Lei, Xiaolin Ren +4

The recent achievement of superconductivity in La${}_3$Ni${}_2$O${}_{7-\delta }$ with transition temperatures exceeding 40 K in thin films under compressive strain and 80 K in bulk crystals un…