Abstract
This study reports the theoretical study of the influence composition dependence of the surface phonon polariton (SPP) mode in wurtzite structure alpha-InxGa1-xN ternary alloy over the whole structure range. The effects of the alloy composition x on the location of SPP mode are identified. An anisotropic model is used to simulate the surface polariton (SP) dispersion curves of the InxGa1-xN ternary alloys. The characteristics of these dispersion curves are explained and the effects of the composition dependence of the InxGa1-xN on the SPs are clarified. Moreover, The obtained results have been compared with the calculated p-polarised IR attenuated total reflection (ATR) spectra produced by standard matrix formulation. Through this study, it has been found that the SPP mode of the wurtzite InxGa1-xN shows one-mode behavior. Finally, the composition dependence of the SPP mode with bowing parameter of -23.126 cm(-1) is determined.