Heavy carrier doping by hydrogen in the spin-orbit coupled Mott insulator Sr2IrO4RemoveY. Yamashita, G. Lim, T. Maruyama, A. Chikamatsu, T. Hasegawa, H. Ogino, T. Ozawa, M. Wilde, K. Fukutani, T. Terashima, M. Ochi, K. Kuroki, H. Kitagawa, and M. MaesatoPhys. Rev. B 104, L041111 (2021)