| 1. |
- Godlewski, M, et al.
(author)
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Mechanism of intra-shell recombination of transition metal and rare earth ions in nanostructures of II-VI compounds
- 2004
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In: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 380:01-Feb, s. 45-49
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Journal article (peer-reviewed)abstract
- Based on the results of optically detected magnetic resonance (ODMR) and time-resolved investigations we relate the observed lifetime shortening of intra-shell Mn2+ emission to spin dependent magnetic interactions between localized spins of Mn2+ ions and spins/magnetic moments of free carriers. We show that this mechanism is active both in bulk and in low dimensional structures, such as quantum wells (QWs), quantum dots (QDs) and nanostructures. (C) 2004 Elsevier B.V. All rights reserved.
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| 2. |
- Godlewski, M., et al.
(author)
-
Mn2+ intra-shell recombination in bulk and quantum dots of II-VI compounds
- 2002
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In: Journal of Alloys and Compounds. - 0925-8388 .- 1873-4669. ; 341:1-2
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Conference paper (other academic/artistic)abstract
- Origin of a fast component of the photoluminescence (PL) decay of Mn 2+ intra-shell 4T1 ? 6A 1 transition in bulk and quantum dot structures is discussed based on the results of PL, PL kinetics and optically detected magnetic resonance experiments. It is demonstrated that a fast component of the PL decay, reported previously for quantum dot structure and related to quantum confinement effects, is also observed in bulk samples and is very much enhanced upon generation of free carriers. The appearance of this fast component of the PL decay is related to a very efficient spin cross-relaxation between localized spins of Mn ions and spins of free carriers. © 2002 Elsevier Science B.V. All rights reserved.
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| 3. |
- Ivanov, VY, et al.
(author)
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Microwave-induced delocalization of excitons in ternary compounds of II-VI and III-V semiconductors
- 2003
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In: Acta Physica Polonica. A. - 0587-4246 .- 1898-794X. ; 103:6, s. 559-566
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Journal article (peer-reviewed)abstract
- In this work we employ technique of optically detected cyclotron resonance for evaluation of the role of localization processes in CdTe/CdMnTe and CdMnTe/CdMgTe quantum well structures. From microwave-induced changes of excitonic emissions we evaluate magnitude of potential fluctuations (Stokes shift), correlate optically detected cyclotron resonance results with the results of time-resolved experiments and discuss nature of recombination processes in the limit of a strong localization.
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