Nanoscale Coherent Phonons with Broadband Frequency TunabilityRemoveZhengpu Zhao (赵正朴), Da Wu (吴达), Chuwei Zhang (张楚惟), Duanyun Cao (曹端云), Haotian Zheng (郑浩天), Yuqing Huang (黄玉清), Qin Wang (王钦), En-Ge Wang (王恩哥), Chaoyu Guo (郭钞宇), and Ying Jiang (江颖)Phys. Rev. Lett. 136, 236201 (2026)