Negative Refraction of Terahertz Phonons via Interfacial Momentum CompensationRemoveHao Chen, Zhong-Ke Ding, Yuan Yao, Chang-Hao Ding, Nannan Luo, Jiang Zeng, Li-Ming Tang, and Ke-Qiu ChenPhys. Rev. Lett. 137, 116301 (2026)
