Diluted Magnetic Semiconductor Investigations in Ukraine. Nature of Some Additional Lines in QW Optical Spectra

• Authors: S. Ryabchenko , V. Abramishvili , A. Komarov , Yu. Semenov , F. Kyrychenko , J. Dubowski
• Languages of publication: EN

Abstracts

EN

The general review of the history and present-day situation of diluted magnetic semiconductor investigation in Ukraine is given by S. Ryabchenko. Some noteworthy results of diluted magnetic semiconductor investigation obtained in Ukraine are pointed out. The main features of the present day situation are mentioned also. As an example of last diluted magnetic semiconductor investigations, the new result obtained by Abramishvili, Komarov, Ryabchenko, Semenov, Kyrychenko and Dubowski for Cd_{1-x}Mn_{x}Te/CdTe/Cd_{1-x}Mn_{x}Te quantum well structures grown by laser ablation method are presented. A weak additional line was observed in the reflectivity spectra of a 27 Å wide quantum well with x= 0.11 in the barrier. Such additional line has not been observed in spectra of similar molecular beam epitaxy grown structures. Based on the theoretical computations of the energies and the relation of intensities of the main and additional lines we conclude that this line might be associated with hh2 → e1 transitions, which ceases to be forbidden in the presence of technologically caused asymmetry of quantum well potential profile.

Keywords

EN

78.55.Et

Discipline

• 78.55.Et: II-VI semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 94
• Issue: 2
• Pages: 165-176

Dates

published

1998-08

Contributors

author

S. Ryabchenko

• Institute of Physics of National Academy of Sciences of Ukraine, 46, Prospekt Nauki st., Kiev, 252028, Ukraine

author

V. Abramishvili

• Institute of Physics of National Academy of Sciences of Ukraine, 46, Prospekt Nauki st., Kiev, 252028, Ukraine

author

A. Komarov

• Institute of Physics of National Academy of Sciences of Ukraine, 46, Prospekt Nauki st., Kiev, 252028, Ukraine

author

Yu. Semenov

• Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Prospekt Nauki st., Kiev, 252028, Ukraine

author

F. Kyrychenko

• Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Prospekt Nauki st., Kiev, 252028, Ukraine

author

J. Dubowski

• Institute for Microstructural Science of NRC of Canada, Ottawa, Ontario, Canada KlA OR6

Identifiers

DOI

10.12693/APhysPolA.94.165