Abstract
Optical-absorption results on single-crystal samples of Se are presented. Dichroism associated with the fundamental edge is established for x≥0.35, consistent with the onset of the wurtzite phase. Up to four absorption bands associated with intraion transitions are seen at x∼0.50; the shifts of the three lowest transitions with x are analyzed with use of ligand-field theory applied to localized clusters. Consistent polarization in the Mn absorption spectrum occurs in the wurtzite region. Possible mechanisms leading to such polarizations are considered.
- Received 6 March 1989
DOI:https://doi.org/10.1103/PhysRevB.40.1186
©1989 American Physical Society