Journal of Shanghai University(Natural Science Edition) ›› 2026, Vol. 32 ›› Issue (1): 17-32.doi: 10.12066/j.issn.1007-2861.2577

• Materials Science • Previous Articles    

Rare earth nickelates: metal-insulator transition and superconducting properties

LI Minjuan, CHEN Mingyao, YIN Xinmao, CAI Chuanbing   

  1. Shanghai Key Laboratory of High Temperature Superconductors, College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2024-03-13 Published:2026-03-16

Abstract: A comprehensive introduction was provided to the basic structure and properties of rare earth nickelates, offering an in-depth summary of their metal-insulator transition (MIT) characteristics as well as the regulation of the MIT process by epitaxial strain, film thickness, and chemical doping. In addition, research on hydrogen-induced phase transition in nickelates was discussed, and a systematic reference was provided to understand and regulate the MIT. Furthermore, the superconductivity of nickelates was reviewed, and it included the exploration of superconductivity in this system and the research progress on La3Ni2O7 superconductors. The summarized research on nickel-based superconductors not only contributed to the acceleration of the exploration of novel superconducting materials but also held significant research value in its uncovering of the mechanisms of high-temperature superconductivity.

Key words: rare earth nickelate, metal-insulation transition (MIT), hydrogenated rare earth nickelate, nickel-based superconductivity

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