LAUSR

Using the full-potential linearized augmented plane wave method, together with the generalized gradient approximation and modified Becke-Johnson as correlation potential, the electronic structures and magnetism for nitrogen-doped ZnS are investigated. Based on the generalized gradient approximation, calculations show nitrogen-substituting sulfur (NS) would induce the ZnS to be paramagnetic metal. As the band gap increasing to the experimental results (obtained by the modified Becke-Johnson potential), the NS defects would induce the ZnS to be a ferromagnetic metal. The total magnetic moment for ZnS supercell with single NS defect is 0.85 μB. Positive chemical pair interactions imply that NS defects would form homogeneous distribution in ZnS host. Sulfur vacancies would give rise to the ZnS with NS defects system losing the magnetism. Moderate formation energy (0.71 eV) indicates ZnS with NS defects could be fabricated experimentally.