Abstract
A study of the Fermi-energy-edge singularity in asymmetric modulation-doped quantum wells is reported. It is shown that high densities of free carriers in filled n=1 electron subbands have no significant influence on the edge singularity in partly occupied n=2 subbands, demonstrating the weakness of intersubband Coulomb-scattering processes. The enhancement of oscillator strength at the Fermi energy is of very similar magnitude to that for excitonic transitions in undoped quantum wells
Translated title of the contribution | Fermi-energy-edge singularity in quantum wells containing more than one occupied subband |
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Original language | English |
Pages (from-to) | 7354 - 7357 |
Number of pages | 4 |
Journal | Physical Review B: Condensed Matter |
Volume | 43 (9) |
DOIs | |
Publication status | Published - Mar 1991 |
Research Groups and Themes
- Photonics and Quantum