Ultrasensitive Higher-Order Exceptional Points via Non-Hermitian Zero-Index MaterialsRemoveDongyang Yan, Alexander S. Shalin, Yongxing Wang, Yun Lai, Yadong Xu, Zhi Hong Hang, Fang Cao, Lei Gao, and Jie LuoPhys. Rev. Lett. 134, 243802 (2025)
