Anisotropic phase stiffness in infinite-layer nickelates superconductors

• Published in: Nature communications Vol. 16; no. 1; pp. 6780 - 9
• Main Authors: Xu, Minyi, Qiu, Dong, Xu, Minghui, Guo, Yehao, Shen, Cheng, Yang, Chao, Sun, Wenjie, Nie, Yuefeng, Li, Zi-Xiang, Xiang, Tao, Qiao, Liang, Xiong, Jie, Li, Yanrong
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 23.07.2025; Nature Publishing Group; Nature Portfolio
• Subjects: 147/137; 639/766/119/1003; 639/766/119/2795; Anisotropy; Broken symmetry; Crystal lattices; Cuprates; Electrical conductivity; Electrical resistivity; Electrons; Energy costs; Fluids; Group 5A compounds; Humanities and Social Sciences; Magnetic fields; multidisciplinary; Phase variations; Science; Science (multidisciplinary); Stiffness; Superconductivity; Superfluidity; Symmetry; Temperature; Thin films; Unconventional superconductors; Vector currents

In unconventional superconductors such as cuprates and iron pnictides and chalcogenides, phase stiffness—a measure of the energy cost associated with superconducting phase variations—governs the formation of superconductivity. Here we demonstrate a vector current technique enabling in-situ angle-res...