Abstract
Magnetoreflectivity measurements for optical transitions at the L point of the Brillouin zone have been performed on Te and Te alloys. Zeeman splittings of the transition labeled have been determined for both compounds. Furthermore, we have determined (for the first time in any semimagnetic semiconductor) Zeeman splittings of the + transition in Te. In Te, as in previously studied Te, it was necessary to introduce a variation of the ion-carrier exchange parameter with wave vectors in order to explain the data. The splitting of the + feature in Te has been found to have the opposite sign and the equal absolute value as the splitting of the feature, consistent with the prediction of Ginter et al. [Solid State Commun. 48, 849 (1983)].
- Received 6 September 1988
DOI:https://doi.org/10.1103/PhysRevB.39.10088
©1989 American Physical Society