Rapid thermal processing of semimagnetic superstructures studied by magnetoreflectivity

✍ Scribed by P. Kossacki; Nguyen The Khoi; J.A. Gaj; G. Karczewski; T. Wojtowicz; E. Janik; A. Zakrzewski; M. Kutrowski; J. Kossut

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 157 KB
• Volume: 16
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1994.1111

✦ Synopsis

Thermally induced interdiffusion in (\mathrm{CdTe} / \mathrm{CdMnTe}) quantum wells and a superlattice was investigated by magnetoreflectivity measurements. The structures were grown by the MBE technique and annealed by rapid thermal processing for (15 \mathrm{~s}) at 450 centigrade. A blue shift of the exciton states confined in quantum wells as well as a significant enhancement of the Zeeman effect were observed for the annealed samples. The manganese distribution profiles after diffusion process are discussed and it is shown that the simplest model of the interdiffusion of the (\mathrm{Mn}) and (\mathrm{Cd}) ions based on the Fick's law does not explain the observed enhancement of the Zeeman effect.