Inter-Valence-Band Absorption in Electron-Hole Droplets
- 30 October 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 41 (18), 1249-1253
- https://doi.org/10.1103/PhysRevLett.41.1249
Abstract
The broad line shape for absorption due to transitions between heavy-hole and spin-orbit bands in electron-hole droplets in Ge is explained. The calculation uses multiple-scattering concepts to remove the divergences of ordinary perturbation expansions in the dynamical Coulomb interaction. The absorption resembles the free-hole theory at low frequencies, is sensitive to both band anisotropy and screening approximations at intermediate frequencies, and is independent of screening at high frequencies. DOI:https://doi.org/10.1103/PhysRevLett.41.1249 ©1978 American Physical SocietyKeywords
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