The mechanism behind high-temperature (TC) superconductivity remains one of condensed matter physics’ major unsolved problems. Chinese researchers have now made important progress in studying high-TC nickelate superconductors.
For the first time, scientists identified a nodeless superconducting gap and detected electron-boson coupling by examining the electronic structures of Ruddlesden-Popper bilayer nickelate superconducting thin films. The findings offer important evidence related to two central questions in high-TC nickelates: “superconducting gap symmetry” and “superconducting pairing mechanism.”
The study was led by Junfeng He of the University of Science and Technology of China (USTC), part of the Chinese Academy of Sciences, in collaboration with teams led by Qikun Xue and Zhuoyu Chen of the Southern University of Science and Technology (SUSTech). It was published in Science on May 21, 2026.
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