Long-lived localized magnetic polarons in ZnMnSe/ZnSSe type-II superlattices
- Russian Academy of Sciences Chernogolovka, Moscow oblast, Institute of Solid State Physics (Russian Federation)
- Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation)
The kinetics and polarized spectra of low-temperature photoluminescence in semiconductor type-II superlattices based on ZnMnSe/ZnSSe structures have been studied in detail. Processes responsible for the formation of short-lived (about 1 ns) and long-lived (above 10 ns) localized exciton-type magnetic polarons (EMPs) in these systems are determined, and the relative contributions due to magnetic and nonmagnetic localization of heavy holes to the formation of such polarons are evaluated. A phenomenological model is constructed that takes into account the energy distribution of charge-carrier traps with respect to their level depths and employs the EMP parameters determined for ZnMnSe quantum wells. Within the proposed model, all spectral, temporal, and temperature-dependent features in the behavior of magnetophotoluminescence observed for the system under consideration can be consistently and quantitatively described.
- OSTI ID:
- 21241993
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 106, Issue 6; Other Information: DOI: 10.1134/S1063776108060125; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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