Optical study of octahedrally and tetrahedrally coordinated MnSe

✍ Scribed by W. Heimbrodt; O. Goede; I. Tschentscher; V. Weinhold; A. Klimakow; U. Pohl; K. Jacobs; N. Hoffmann

• Book ID: 103937541
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 413 KB
• Volume: 185
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(93)90261-4

✦ Synopsis

Octahedrally and tetrahedrally coordinated MnSe MBE-layers and polycrystalline thin films and octahedrally coordinated (Mn, Cd)Se (_zMn 2 0.8) bulk crystals are investigated by luminescence and excitation spectroscopy. The results are discussed in the framework of a ligand-field-model. Below the Ntel temperature (TN) a significant shift of the Mn'+ d-d excitation bands to higher energies is found for the polycrystalline and bulk samples, which is caused by a spin-orderinginduced energy relaxation of the various Mn2+ states. No indication for an antiferromagnetic phase transition is found in the case of the quasi-2D-MBE-layers of MnSe.