Alternating atomic-dipole layers and switching dynamics in Al 1-x Sc x N ferroelectrics - Yonghui Zheng; Ruirong Bai; Tianjiao Xin; Xuanyu Zhao; Yan Cheng; Yu-Ning Wu; Yingfen Wei; Binghui Ge; He Tian; Shiyou Chen; Qi Liu; Chungang Duan; et al. (Science, 2026)