Abstract
We have investigated the carrier spin segregation process in a ZnSe/Se quantum-well structure by studying the energy and relative intensity of the ground-state exciton components as a function of applied magnetic field. The heavy-hole exciton initially tends towards type-II behavior as the field is applied but the trend reverses itself at higher fields as the conduction-band splitting of the magnetic barriers becomes significant. The interplay between the electron-hole Coulomb attraction and the tunable type-II confining potentials is described in the context of a variational model.
- Received 19 August 1994
DOI:https://doi.org/10.1103/PhysRevB.51.1642
©1995 American Physical Society