Ambient-pressure superconductivity onset above 40 K in (La,Pr)3Ni2O7 films - Guangdi Zhou; Wei Lv; Heng Wang; Zihao Nie; Yaqi Chen; Yueying Li; Haoliang Huang; Wei-Qiang Chen; Yu-Jie Sun; Qi-Kun Xue; Zhuoyu Chen (Nature, 2025)