中国物理B ›› 2024, Vol. 33 ›› Issue (9): 96801-096801.doi: 10.1088/1674-1056/ad6a0d

所属专题: SPECIAL TOPIC — Stephen J. Pennycook: A research life in atomic-resolution STEM and EELS

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Probing nickelate superconductors at atomic scale: A STEM review

Yihan Lei(雷一涵)1,2, Yanghe Wang(王扬河)1,2, Jiahao Song(宋家豪)1,2, Jinxin Ge(葛锦昕)1,2, Dirui Wu(伍迪睿)1,2, Yingli Zhang(张英利)1,2, and Changjian Li(黎长建)1,2,†   

  1. 1 Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
    2 Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
  • 收稿日期:2024-06-07 修回日期:2024-08-01 接受日期:2024-08-01 出版日期:2024-09-15 发布日期:2024-08-30
  • 通讯作者: Changjian Li E-mail:licj@sustech.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 52172115), the Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province (Grant No. 2021B1212040001), Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022A1515012434), Shenzhen Science and Technology Program (Grant No. 20231121093057002), and Natural Science Foundation of Guangdong Province, China (Grant No. 2022A1515010762).

Probing nickelate superconductors at atomic scale: A STEM review

Yihan Lei(雷一涵)1,2, Yanghe Wang(王扬河)1,2, Jiahao Song(宋家豪)1,2, Jinxin Ge(葛锦昕)1,2, Dirui Wu(伍迪睿)1,2, Yingli Zhang(张英利)1,2, and Changjian Li(黎长建)1,2,†   

  1. 1 Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
    2 Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
  • Received:2024-06-07 Revised:2024-08-01 Accepted:2024-08-01 Online:2024-09-15 Published:2024-08-30
  • Contact: Changjian Li E-mail:licj@sustech.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 52172115), the Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province (Grant No. 2021B1212040001), Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022A1515012434), Shenzhen Science and Technology Program (Grant No. 20231121093057002), and Natural Science Foundation of Guangdong Province, China (Grant No. 2022A1515010762).

摘要: The discovery of nickelate superconductors, including doped infinite-layer (IL) nickelates $R$NiO$_{2}$ ($R= {\rm La}$, Pr, Nd), layered square-planar nickelate Nd$_{6}$Ni$_{5}$O$_{12}$, and the Ruddlesden-Popper (RP) phase La$_{3}$Ni$_{2}$O$_{7}$, has spurred immense interest in fundamental research and potential applications. Scanning transmission electron microscopy (STEM) has proven crucial for understanding structure-property correlations in these diverse nickelate superconducting systems. In this review, we summarize the key findings from various modes of STEM, elucidating the mechanism of different nickelate superconductors. We also discuss future perspectives on emerging STEM techniques for unraveling the pairing mechanism in the “nickel age” of superconductivity.

关键词: scanning transmission electron microscopy, superconductivity, epitaxial thin films, nickelates

Abstract: The discovery of nickelate superconductors, including doped infinite-layer (IL) nickelates $R$NiO$_{2}$ ($R= {\rm La}$, Pr, Nd), layered square-planar nickelate Nd$_{6}$Ni$_{5}$O$_{12}$, and the Ruddlesden-Popper (RP) phase La$_{3}$Ni$_{2}$O$_{7}$, has spurred immense interest in fundamental research and potential applications. Scanning transmission electron microscopy (STEM) has proven crucial for understanding structure-property correlations in these diverse nickelate superconducting systems. In this review, we summarize the key findings from various modes of STEM, elucidating the mechanism of different nickelate superconductors. We also discuss future perspectives on emerging STEM techniques for unraveling the pairing mechanism in the “nickel age” of superconductivity.

Key words: scanning transmission electron microscopy, superconductivity, epitaxial thin films, nickelates

中图分类号:  (Scanning transmission electron microscopy (STEM))

  • 68.37.Ma
74.25.Dw (Superconductivity phase diagrams) 81.30.Dz (Phase diagrams of other materials) 79.20.Uv (Electron energy loss spectroscopy)