Phonon resonances in optical spectra of donors in quantum wells
Identifieur interne : 000D30 ( Istex/Curation ); précédent : 000D29; suivant : 000D31Phonon resonances in optical spectra of donors in quantum wells
Auteurs : S. Bednarek [Pologne] ; B. Szafran [Pologne] ; J. Adamowski [Pologne] ; I. Essaoudi [Maroc] ; B. Stébé [France]Source :
- Physica B: Physics of Condensed Matter [ 0921-4526 ] ; 1999.
Abstract
An influence of electron–phonon coupling and electron confinement on optical spectra is studied for donors in semiconductor quantum wells. A binding and 1s–2p transition energies have been calculated by the optimized canonical transformation method for GaAs/AlGaAs, CdTe/CdZnTe, and CdF2/CaF2 quantum wells. We have found that — in the quantum wells made from the ionic semiconductors — the 1s–2p transition energy exceeds the LO-phonon energy and the phonon resonances can appear in the optical spectra of donors. We have estimated the parameters of quantum wells, for which the phonon resonances can be detected in the absence of external magnetic field.
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DOI: 10.1016/S0921-4526(99)00561-X
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Mickiewicza 30, Kraków, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków</wicri:regionArea></affiliation></author><author><name sortKey="Adamowski, J" sort="Adamowski, J" uniqKey="Adamowski J" first="J." last="Adamowski">J. Adamowski</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków</wicri:regionArea></affiliation><affiliation><mods:affiliation>Corresponding author. Tel.: +4812-6172974; fax: +4812-6340010</mods:affiliation><wicri:noCountry code="no comma">Corresponding author. Tel.: +4812-6172974; fax: +4812-6340010</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: adamowski@novell.ftj.agh.edu.pl</mods:affiliation><country wicri:rule="url">Pologne</country></affiliation></author><author><name sortKey="Essaoudi, I" sort="Essaoudi, I" uniqKey="Essaoudi I" first="I." last="Essaoudi">I. Essaoudi</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University Moulay Ismail, Meknes, Morocco</mods:affiliation><country xml:lang="fr">Maroc</country><wicri:regionArea>Department of Physics, University Moulay Ismail, Meknes</wicri:regionArea></affiliation></author><author><name sortKey="Stebe, B" sort="Stebe, B" uniqKey="Stebe B" first="B." last="Stébé">B. 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Bednarek</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków</wicri:regionArea></affiliation></author><author><name sortKey="Szafran, B" sort="Szafran, B" uniqKey="Szafran B" first="B." last="Szafran">B. Szafran</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków</wicri:regionArea></affiliation></author><author><name sortKey="Adamowski, J" sort="Adamowski, J" uniqKey="Adamowski J" first="J." last="Adamowski">J. Adamowski</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), al. Mickiewicza 30, Kraków</wicri:regionArea></affiliation><affiliation><mods:affiliation>Corresponding author. Tel.: +4812-6172974; fax: +4812-6340010</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: adamowski@novell.ftj.agh.edu.pl</mods:affiliation><country wicri:rule="url">Pologne</country></affiliation></author><author><name sortKey="Essaoudi, I" sort="Essaoudi, I" uniqKey="Essaoudi I" first="I." last="Essaoudi">I. Essaoudi</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University Moulay Ismail, Meknes, Morocco</mods:affiliation><country xml:lang="fr">Maroc</country><wicri:regionArea>Department of Physics, University Moulay Ismail, Meknes</wicri:regionArea></affiliation></author><author><name sortKey="Stebe, B" sort="Stebe, B" uniqKey="Stebe B" first="B." last="Stébé">B. 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A binding and 1s–2p transition energies have been calculated by the optimized canonical transformation method for GaAs/AlGaAs, CdTe/CdZnTe, and CdF2/CaF2 quantum wells. We have found that — in the quantum wells made from the ionic semiconductors — the 1s–2p transition energy exceeds the LO-phonon energy and the phonon resonances can appear in the optical spectra of donors. We have estimated the parameters of quantum wells, for which the phonon resonances can be detected in the absence of external magnetic field.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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