Calculated Band Structure and Reflectivity Spectra of ZnGeP2

Abstract

The imaginary part of the dielectric function, the energy band structure, and the reflectivity of the ternary compound ZnGe${\mathrm{P}}_2$ are calculated using the empirical pseudopotential method. A critical point analysis in the Brillouin zone is discussed in detail to explain prominent optical structure. Spin-orbit corrections to the band structure were calculated at a few points in the Brillouin zone.