Enhanced polarization switching characteristics of HfO2 ultrathin films via acceptor-donor co-doping - Chao Zhou; Liyang Ma; Yanpeng Feng; Chang-Yang Kuo; Yu-Chieh Ku; Cheng-En Liu; Xianlong Cheng; Jingxuan Li; Yangyang Si; Haoliang Huang; Yan Huang; Hongjian Zhao; et al. (Nature Communications, 2024)