Abstract
The renormalization of the Landau-level transition energies in the dense quasi-two-dimensional magnetoplasma has been determined from time-resolved luminescence spectra in a strained undoped As/GaAs quantum well. The neutral electron-hole magnetoplasma was created by 1-ps laser pulses in magnetic fields H≤7.5 T. The renormalization has been found to depend strongly not only on the carrier density but also on their distribution over Landau levels. The dependence is explained by the interplay of the attractive exchange and repulsive Pauli contributions in the transition energies and Coulomb interaction screening effect.
- Received 4 April 1994
DOI:https://doi.org/10.1103/PhysRevB.50.15063
©1994 American Physical Society