Optical properties of perovskite alkaline earth titanates : a formulation

Details Optical properties of perovskite alkaline earth titanates : a formulation Optical properties of perovskite alkaline earth titanates : a formulation

2002-03-03

arxiv.org/abs/cond-mat/0203042v1

Physics

Condensed Matter

Materials Science

19 pages, 9 figures, Submitted to Journal of Physics: Condensed Matter

Scientific paper

10.1088/0953-8984/14/15/301

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 CaTiO_3, SrTiO_3 and BaTiO_3 and compare our results with available data on optical properties of these systems.

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