Author:
Lei 雷 Yihan 一涵,Wang 王 Yanghe 扬河,Song 宋 Jiahao 家豪,Ge 葛 Jinxin 锦昕,Wu 伍 Dirui 迪睿,Zhang 张 Yingli 英利,Li 黎 Changjian 长建
Abstract
Abstract
The discovery of nickelate superconductors, including doped infinite-layer (IL) nickelates RNiO2 (R = La, Pr, Nd), layered square-planar nickelate Nd6Ni5O12, and the Ruddlesden–Popper (RP) phase La3Ni2O7, 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.