Figure 4From: The electronic and optical properties of quaternary GaAs1-x-yN x Bi y alloy lattice-matched to GaAs: a first-principles study The energy loss function L ( ω ) and reflectivity R ( ω ) of GaAs (black lines) and GaAs 1- x - y N x Bi y (red lines) with x =1/32, y =1/16. Back to article page