Orbital-Selective Spin-Orbit Mott Insulator in Fractional Valence Iridate ${\mathrm{La}}_{3}{\mathrm{Ir}}_{3}{\mathrm{O}}_{11}$

Author(s): Kai Wang, Jun Yang, Chaoyang Kang, Weikang Wu, Wenka Zhu, Jianzhou Zhao, Yaomin Dai, and Bing Xu The combination of strong spin-orbit coupling and Coulomb interactions makes the $5d$ iridates a unique platform for realizing novel correlated electronic states. Here, utilizing infrared spectroscopy, we demonstrate that a robust Mott insulating state persists in the $1/3$-hole self-doped system ${… [Phys. Rev. Lett. 136, 096501] Published Mon Mar 02, 2026