Dual Instability of Superconductivity from Oxygen Defects in La 3 Ni 2 O 7 + δ

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Abstract
Oxygen defects suppress superconductivity in the bilayer nickelate La${}_{3}$Ni${}_{2}$O${}_{7+\ensuremath{\delta}}$ via a dual mechanism, revealed through density functional theory, dynamical mean-field theory, and functional renormalization group analysis.
Funding Information
  • National Key Research and Development Program of China (2022YFA1403000)
  • National Key Research and Development Program of China (2024YFA1408100)
  • National Natural Science Foundation of China (12274207)
  • National Natural Science Foundation of China (12374147)
  • National Natural Science Foundation of China (12574069)
  • National Natural Science Foundation of China (92365203)
  • Basic Research Program of Jiangsu Province (BK20253009)
  • Basic Research Program of Jiangsu Province (BK20253012)
  • Basic Research Program of Jiangsu Province (BK20233001)
  • Natural Science Basic Research Program of Shaanxi Province (2025JC-YBQN-001)
  • Xi’an Jiaotong University (WL6J022)

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