Coexistence of intrinsic piezoelectricity, ferromagnetism and nontrivial band topology in Li-decorated Janus monolayer $\mathrm{F}{\mathrm{e}}_2\mathrm{SSe}$ with high Curie temperature

San-Dong Guo, Wen-Qi Mu, Meng-Yuan Yin +2

Recently, the quantum anomalous Hall (QAH) insulators are predicted in Lithium-decorated iron-based superconductor monolayer materials (LiFeX (X=S, Se and Te)) with very high Curie…