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Anomalous temperature dependence of excitation transfer between quantum dots
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SYSNO ASEP 0455683 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Anomalous temperature dependence of excitation transfer between quantum dots Author(s) Král, Karel (FZU-D) RID
Menšík, Miroslav (UMCH-V) RIDSource Title Advanced Science, Engineering and Medicine - ISSN 2164-6627
Roč. 7, č. 4 (2015), 325-330Number of pages 6 s. Language eng - English Country US - United States Keywords excitation transfer ; quantum dots ; temperature dependence ; electron-phonon interaction Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects LD14011 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LH12236 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LH12186 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 ; UMCH-V - RVO:61389013 DOI 10.1166/asem.2015.1703 Annotation Electronic excitation energy transfer is studied theoretically within an example system of quantum dots. We use an excitonic representation of the electronic states of two quasi-zero dimensional subsystems, between which the excitation energy is transferred in a process treated as an irreversible quantum kinetic phenomenon. The electron–phonon interaction, which we include in an approximation going beyond the limits of finite order perturbation calculation, is used for considering the so called uphill and downhill excitation transfer processes. The theory of the rate is developed in a model of electronic systems of two quantum dots, both coupled to their atomic vibrations environments. The theoretical approach is documented with numerical calculations. The results should be relevant to various cases of the electronic excitation energy transfer between quasi-zero-dimensional nanostructures. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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