Optical Dispersion by Wannier Excitons
- 27 November 1995
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 75 (22), 4090-4093
- https://doi.org/10.1103/physrevlett.75.4090
Abstract
An analytical expression of the complex dielectric constant of Wannier excitons is obtained, which includes exactly the contributions of all bound and unbound states. It allows an improved description of the excitonic influence on the optical properties of semiconductors near the band gap, especially with respect to dispersion effects.Keywords
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