Observation of a Many-Body Edge Singularity in Quantum-Well Luminescence Spectra
- 18 May 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 58 (20), 2130-2133
- https://doi.org/10.1103/physrevlett.58.2130
Abstract
The observation of a many-body, Fermi-energy edge singularity in the low-temperature photoluminescence spectra of InGaAs-InP quantum wells is reported. Strong enhancement of the photoluminescence intensity towards the electron Fermi energy () is observed, due to multiple electron-hole scattering processes to states above . Recombination of electrons in states up to is allowed by hole localization. The many-body processes are analogous to the core-hole phenomena in the soft-x-ray emission spectra of metals.
Keywords
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