Robust Superconductivity in Infinite‐Layer Nickelates (Adv. Sci. 37/2024)

Superconductors In article number 2305252, Huaqian Leng, Mengsha Li, Liang Qiao, and co-workers demonstrate a reversible transition between the perovskite Nd0.8Sr0.2NiO3 and the infinite-layer Nd0.8Sr0.2NiO2 thin films without losing their structural framework and topological relationships. The structural and physical properties of nickelates are systematically investigated by successively “deintercalation-intercalation” of the apical oxygens in 6-fold coordination of Ni ions. The superconductivity in Nd0.8Sr0.2NiO2 still exists even for 10 times cycles, indicating the robustness of infinite-layer structural frame.