Optical conductivity study of mixed-valent quasi-one-dimensional CeIr3B2RemoveThomas U. Böhm, Bo Gyu Jang, Nicholas S. Sirica, Yu Liu, Kenneth R. O'Neal, Rohit P. Prasankumar, Eric D. Bauer, Christopher C. Homes, Jian-Xin Zhu, and Filip RonningPhys. Rev. B 112, 235103 (2025)