Abstract
Femtosecond spectroscopic measurements of optically induced magnetization are performed on new type-II ZnTe/Se diluted-magnetic-semiconductor heterostructures consisting of magnetic quantum wells confined by nonmagnetic barrier layers. The formation and evolution of electron-based bound magnetic polarons in the wells is observed through static and time-domain experiments. Energy-dependent magnetic spin dynamics on ultrashort time scales are seen to vary dramatically with the degree of electronic confinement.
- Received 11 December 1990
DOI:https://doi.org/10.1103/PhysRevLett.66.1212
©1991 American Physical Society