Enhanced Superconducting Gap in the Outer ${\mathrm{CuO}}_{2}$ Plane of the Trilayer Cuprate $(\mathrm{Hg},\text{ }\mathrm{Re}){\mathrm{Ba}}_{2}{\mathrm{Ca}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{8+δ}$

Author(s): M. Horio, M. Miyamoto, Y. Mino, S. Ishida, B. Thiagarajan, C. M. Polley, C. H. Lee, T. Nishio, H. Eisaki, and I. Matsuda The material with the highest-temperature superconductivity at ambient pressure has received less attention than its easier-to-prepare relatives—until now. [Phys. Rev. Lett. 135, 046501] Published Tue Jul 22, 2025