Two-dimensional ferromagnetic MoSeX (X = F, Cl, Br, I) with large out-of-plane piezoelectricity exhibiting an electronegativity difference ratio effectRemoveGui-Juan Du, Xiao Shang, Dan-Yang Zhu, Min Tao, Fu-Chun Liu, Shou-Xin Cui, Zeng-Tao Lv, and Xiao-Chun WangPhys. Rev. B 113, 085411 (2026)
