Abstract
The observation of both LO-phonon and inter-Landau-level magnetoplasmon shake-up excitations in the magnetophotoluminescence spectra of quantum wells containing high densities of free carriers is reported. The inter-Landau-level magnetoplasmon excitations occur at energies greater than the bare Landau-level separations, in agreement with the predictions of many-body theory. Clear evidence for LO-phonon–magnetoplasmon coupled-mode behavior is observed.
- Received 26 October 1992
DOI:https://doi.org/10.1103/PhysRevB.47.6823
©1993 American Physical Society