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Optical Detection of Cyclotron Resonance (ODCR) in GaNAs/GaAs Quantum Well Structures
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0002-6405-9509
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0001-7155-7103
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
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2000 (English)Conference paper, Published paper (Refereed)
Abstract [en]

ODCR has been employed to study effective masses and carrier recombination in GaNAs/GaAs multi-quantum well (MQW) structures, prepared by MBE with the nitrogen composition up to 4.5 above GaAs bandgap excitation consists of the excitonic recombination within the GaNAs MQW, the band edge PL emissions from GaAs and a broad 0.8-eV PL of unknown origin. When monitoring these emissions under the above GaAs excitation, the ODCR spectrum is dominated by the electron and hole CR in GaAs, with effective mass values 0.07m0 and 0.5m_0, respectively. The ODCR mechanism is discussed in terms of hot carrier effects, resulting in a reduced carrier recombination in GaAs and an enhanced carrier trapping in the GaNAs MQW. Under resonant excitation of the GaNAs MQW only a broad ODCR signal can be observed corresponding to an effective mass value 0.1m_0, attributed to the electron CR in the GaNAs MQW, where a higher electron effective mass value and a much lower mobility are expected.

Place, publisher, year, edition, pages
Bull. Amer. Phys. Soc: APS , 2000. Vol. 45
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-45140Local ID: 79815OAI: oai:DiVA.org:liu-45140DiVA: diva2:266002
Conference
American Physical Society, Annual March Meeting, 20-24 March 2000, Minneapolis, USA
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-03-27

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http://adsabs.harvard.edu/abs/2000APS..MARY29013C

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Chen, WeiminBuyanova, IrinaMonemar, Bo

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CiteExportLink to record
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