Abstract
Based on first-principles spin-density functional calculations, the optical and magnetic properties of Mn-doped ZnO diluted magnetic semiconductors with acceptor defects by Zn vacancies (VZn) are studied, using the Korringa–Kohn–Rostoker method (KKR) combined with the coherent potential approximation (CPA). Ferromagnetic and half-metallic behaviors were observed and confirmed with the local-moment-disordered (LMD) state energy for local density approximation (LDA) and local density approximation-self-interaction correction (LDA-SIC). The mechanism of hybridization and the interaction between magnetic ions in P-type (Zn, Mn)O are also investigated. Moreover, the optical absorption spectra obtained by ab-initio calculations confirm the ferromagnetic stability based on the charge state of magnetic impurities.
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