Photoluminescence from Cd1-xMnxTe multiquantum wells has been studied magnetic fields up to 21.8 Tesla. The spectra show large shifts to low energies with increasing fields. The major observations include apparent saturation of the shifts at higher fields, their anomalous temperature dependence, and a significant degree of anisotropy in the field directions parallel and perpendicular to the superlattice axis. The results support our arguments that the excitons are localized near the heterointerfaces and are substantially 2-dimensional.
Bibliographical noteFunding Information:
This work at Brown University was supported by the Office of Naval Research Contract N00014-83-K06038. The work at Purdue University was supported by the Office of Naval Research Contract N00014-82-K0563, the Air Force Office of Scientific Research Grant 83-0237 and NSF-MRL Grant DMR-83-16999. L. A. Kolodziejski would like to thank IBM for fellowship support.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry