Infrared dielectric function, phonon modes and free-charge carrier properties of high-Al-content Al${}_x$Ga${}_{1-x}$N alloys determined by mid-infrared spectroscopic ellipsometry and optical Hall effect

S. Schöche, T. Hofmann, D. Nilsson +6

The phonon mode parameters and anisotropic mid-infrared dielectric function tensor components of high- Al-content Al${}_x$Ga${}_{1-x}$N alloys in dependence of the Al content $x$ are p…