摘要：Using first-principles calculations, we have investigated the electronic structure and magnetic properties of Fe- X 6 clusters ( X = S, C, N, O, and F) incorporated in 4 × 4 monolayer MoS2, where a Mo atom is substituted by Fe and its nearest S atoms are substituted by C, N, O, and F. Single Fe and Fe-F6 substituions make the system display half-metallic properties, Fe-C6 and Fe-N6 substitutions lead to a spin gapless semiconducting behavior, and Fe-O6 doped monolayer MoS2 is semiconducting. Magnetic moments of 1.93, 1.45, 3.18, 2.08, and 2.21 μB are obtained for X = S, C, N, O, and F, respectively. The different electronic and magnetic characters originate from hybridization between the X and Fe/Mo atoms. Our results suggest that cluster doping can be an efficient strategy for exploring two-dimensional diluted magnetic semiconductors.
