Abstract
Avoided crossing of the emission lines of a nearly free positive trion and a cyclotron replica of an exciton bound to an interface acceptor has been observed in the magnetophotoluminescence spectra of -doped GaAs quantum wells. Identification of the localized state depended on the precise mapping of the anticrossing pattern. The underlying coupling is caused by an exciton transfer combined with a resonant cyclotron excitation of an additional hole. The emission spectrum of the resulting magnetically tunable coherent state probes weak localization in the quantum well.
- Received 24 August 2011
DOI:https://doi.org/10.1103/PhysRevB.85.165308
©2012 American Physical Society