Figure 2From: Lattice dynamics of Ga1−xMn x N and Ga1−xMn x As by first-principle calculationsCalculated GGA and LDA LO(Γ) and TO(Γ) frequency shifts for the cubic Ga 1− x Mn x As alloy, as function of Mn concentration (diluted regime). Calculated GGA (open circles and full lines); and LDA (full circles and dash-dot lines). The full lines (obtained by a second degree polynomial) are guides for the eyes.Back to article page