Possible $S_{\pm }$-wave superconductivity in La${}_3$Ni${}_2$O${}_7$

Qing-Geng Yang, Da Wang, Qiang-Hua Wang

Recently, the bulk nickelate La${}_3$Ni${}_2$O${}_7$ is reported to show signature of high-temperature superconductivity under high pressure above $14$GPa [H. Sun et al., Nature 621, 493…