Reflectivity of GaTe in the 1 to 35 eV range

Abstract
The reflectivity of GaTe cleaved samples has been determined in the range 1-35 eV. A method is given by which a corrected curve of reflectivity in the whole spectral range may be deduced from experimental results of reflection and absorption obtained in different energy ranges. This method is used to calculate the reflectivity of GaTe below the absorption edge. The dielectric constants, the joint density of states and the number of effective electrons in the range 0-35 eV are reported. The effect of air exposure on the UV reflectivity has also been studied and an important surface alteration was found to occur in a few hours.