Abstract
We present a theory for the intersubband absorption including electronic ground-state correlations in a doped quantum well system. Focusing on the influence of the Coulomb interaction among the carriers at low temperatures, we find that the ground-state correlations lead to an increased renormalization and spectral broadening of the absorption spectrum. At , its full width at half maximum is increased by up to a factor 3. The inclusion of electron-phonon scattering strongly reduces the relative impact of the electronic correlations.
- Received 9 April 2010
DOI:https://doi.org/10.1103/PhysRevB.82.045305
©2010 American Physical Society