Optical properties of perovskite alkaline earth titanates : a formulation
Abstract
In this communication we suggest a formulation of the optical conductivity as a convolution of an energy resolved joint density of states and an energy-frequency labelled transition rate. Our final aim is to develop a scheme based on the augmented space recursion for random systems. In order to gain confidence in our formulation, we apply the formulation to three alkaline earth titanates CaTiO3, SrTiO3 and BaTiO3 and compare our results with available data on optical properties of these systems.
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