2004/07/12 by P. Aceituno, A. Hernández-Cabrera, A. Hernandez-Cabrera
Physics and Astronomy · #Biexciton #Bound state #Density matrix #Electron #Exciton #Formalism (music) #Free electron model #Quantum #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Spectroscopy and Quantum Chemical Studies #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.1949717
14 pages, 13 figures
arxiv created 2004/07/12 · openalex publication_date 2005/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have studied the coherent dynamics of injected electrons when they are either free or bound in excitons and trions (charged excitons). We have considered a remotely doped asymmetric double quantum well where an excess of free electrons together with direct-created excitons generates trions. We have used the matrix density formalism to analyze the electron dynamics for different concentrations of the three species. Calculations show a significant modification of the free-electron intersublevel oscillations caused by electrons bound in excitons and trions. Based on these calculations we propose a method to detect trions through the emitted electromagnetic radiation or the current density.