The monolayer Janus FeClS, whose mirror inversion symmetry is broken due to its different non-metallic atomic compositions, exhibits spontaneous polarity and obvious spin polarization and has unique half-metal properties different from the corresponding pure monolayer FeCl 2 and FeS 2 , that is, the spin-up band appears as a semiconductor and the spin-down band appears as a metal. As the most common and effective means of structure and performance regulation, biaxial strain is applied to monolayer FeClS for study. Importantly, the strain-induced crystal structure changes cause different inter-...
