Saturation of superconductivity in cuprates overdoped with high-pressure oxygen: Phase diagram with YBa 2 Cu 3 O 7+δ , δ → 1 - Steven D. Conradson; Luiz M. Dezaneti; Gianguido Baldinozzi; Linda Sederholm; Maarit Karppinen; Luis Casillas-Trujillo; Matthew Latimer; Oliver Mueller; Edmondo Gilioli; Alan R. Bishop; Xiaofeng Guo; Juejing Liu; et al. (Proceedings of the National Academy of Sciences, 2026)