Abstract
The influence of an external uniform magnetic field applied along the growth axis on the ground-state energy of an exciton bound to an ionized donor impurity in a semiconductor quantum well with finite potential barriers is investigated. The binding energy of the complex is calculated variationally within the envelope-function approximation as a function of the well width for arbitrary intensity of the field. The results show that the magnetic field enhances the correlation energy of the complex in the cases of and the quantum wells. The influence of the magnetic field and the quantum confinement on the stability against dissociation is also discussed.
- Received 20 February 2001
DOI:https://doi.org/10.1103/PhysRevB.64.085304
©2001 American Physical Society