Dynamics of photoexcited carriers in molecular beam epitaxy grown semimagnetic epilayers in magnetic fields

Time-resolved photoluminescence has been measured on molecular beam epitaxy grown Cd1−xMnxTe epilayer samples. The photoluminescence intensity of magnetic polarons exhibits a very long emission tail. The observed phenomenon is attributed to the conversion of the dark excitons to dipole allowed trans...

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Bibliographic Details
Published in:Journal of applied physics 1999-04, Vol.85 (8), p.5941-5943
Main Authors: Debnath, M. C., Souma, I., Shirado, E., Mitsu, H., Sato, T., Shen, J. X., Oka, Y.
Format: Article
Language:English
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Summary:Time-resolved photoluminescence has been measured on molecular beam epitaxy grown Cd1−xMnxTe epilayer samples. The photoluminescence intensity of magnetic polarons exhibits a very long emission tail. The observed phenomenon is attributed to the conversion of the dark excitons to dipole allowed transitions by a spin-flip process. The magnetic field dependence of the two-exponential decay property is discussed within the frame of giant Zeeman splitting, the spin-flip scattering, and the formation of the magnetic polarons.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.369998