Nexus fermions in topological symmorphic crystalline metals

Guoqing Chang, Su Yang Xu^*, Shin Ming Huang, Daniel S. Sanchez, Chuang Han Hsu, Guang Bian, Zhi Ming Yu, Ilya Belopolski, Nasser Alidoust, Hao Zheng, Tay Rong Chang, Horng Tay Jeng, Shengyuan A. Yang, Titus Neupert, Hsin Lin, M. Zahid Hasan