Identify the switching of VO3 and VO4 and its effect on ferroelectric hafniaRemoveSida Li, Zihe Wang, Tingxiao Xie, Chuang Xue, Yufeng Xue, Qian Yin, Tongcai Yue, Junwen Yin, Tengfei Cao, Gilberto Teobaldi, Qi Hu, and Li-Min LiuPhys. Rev. B 113, 134109 (2026)