The paper is published online： H.-Y. Zhang#, X. Xing#, J.-J. Wang*, C. Nie, Y. Du, J. Zhang, X. Shen, W. Zhou*, M. Wuttig, R. Mazzarello*, Wei Zhang*, Atomistic understanding of two-dimensional monatomic phase-change material for non-volatile optical applications, Advanced Science 13, 13157 (2026) Link. The data supporting this paper can be downloaded from the link below.