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Effect of Many Body Interactions on Optical Dielectric Constant of Lead Chalcogenides

Lead chalcogenides, Rigid shell model, Optical dielectric constant

A theoretical model for the optical dielectric constant of lead chalcogenides, incorporating the effect of many body interactions and Vander Waals interactions in the framework of rigid shell model is proposed. It is shown to yield accurate values for the optical dielectric constant of lead chalcogenides at room temperature. The computed values of optical di electric constant of lead chalcogenides are compared with those in literature and m easured by other researchers.