We report on Coulomb correlation effects in the luminescence of strain-induced quantum dots. In single dots, under low power excitation, we observe the rising of sharp lines associated to the formation of excitonic molecules. In the grand-ensemble, in magnetic fields up to 45 T, we observe Darwin-Fock states of the dots to merge into a unique Landau level, with a considerable reduction in the total diamagnetic shift due to the enhanced electron-hole correlation caused by the increased degeneracy of the state.
|Number of pages||6|
|Journal||PHYSICA STATUS SOLIDI B: BASIC SOLID STATE PHYSICS|
|Publication status||Published - Mar 2001|
|MoE publication type||A1 Journal article-refereed|