Superconductivity2026-08-042 minarXiv:2608.03908expressA Nickel-Oxygen Superconducting PuzzleA tiny sandwich of oxides, grown layer by layer, becomes perfectly conducting at about minus 200 degrees Celsius. This is not a magic trick but a new chapter in the search for high-temperature superconductors.Yu Miao·Zhiwei Wang·Hongxu Sun·Jianchang Shen·Runqing Luan·Zhipeng Ou·Xinru Yong·Zhenyu Wang·Tao Wu·Haoyu Hu·Junfeng He·Xianhui ChenAlbert EinsteinAlexei KitaevAugustin-Louis CauchysuperconductivitysuperfluidityFermi surfacePhase transitionspectroscopy👍👎☆SimplePopularAdvanced