Multiple truly topological unidirectional surface magnetoplasmons at terahertz frequenciesRemoveShengquan Fan, Tianjing Guo, Binbin Zhou, Jie Xu, Xiaohua Deng, Jiangtao Lei, Yun Shen, Meicheng Fu, Kosmas L. Tsakmakidis, and Lujun HongPhys. Rev. B 111, 235303 (2025)