Author(s): Chenxiao Hao, Tianhao Xian, Zhenghu Chang, Yahan Du, and Li Zhan The framework of superconductivity unveiled the striking concept that electrons form Cooper pairs through the subtle interplay of lattice vibrations, surmounting their Coulombic repulsion in the process. The concept of Cooper pairs has been established beyond the Fermi system, and this pairing mecha… [Phys. Rev. Lett. 137, 033801] Published Wed Jul 15, 2026