Calculated GGA and LDA LO(Γ) and TO(Γ) frequency shifts for the cubic Ga1−xMnxN alloy, as function of Mn concentration (diluted regime). Calculated GGA (full circles and dash-dot lines) and LDA (open circles and full lines). The full lines (obtained by a second-degree polynomial) are guides for the eyes.
Leite Alves et al. Nanoscale Research Letters 2012 7:573 doi:10.1186/1556-276X-7-573