Electron-hole plasma in direct-gapAs and-selection rule
- 15 February 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 29 (4), 2028-2035
- https://doi.org/10.1103/physrevb.29.2028
Abstract
Uniformly excited electron-hole plasma under three-dimensional confinement has been studied in As by photoluminescence at 2 K. With this approach, a satisfactory fitting of the experimental data has been obtained over a wide range of densities and Al concentrations using a single value of density and temperature throughout the excited region. The theoretical model used is based on the preservation of -selection rules with a built-in broadening in the single-particle density of states. The fitting renormalized gap closely agrees with existing many-body theories, contrary to recent claims. The possibilities of plasmon-replica contributions and of thermalization processes by recent claims. The possibilities of plasmon-replica contributions and of thermalization processes by impurity or disorder-activated scattering are discussed. A new estimate of the radiative-recombination coefficient is reported.
Keywords
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