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Spin polarization of neutral excitons in quantum dots: the role of the carrier collection area
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
2010 (English)In: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, NANOTECHNOLOGY, Vol. 21, no 34Article in journal (Refereed) Published
Abstract [en]

A high degree (approximate to 55%) of circular polarization has been observed for the neutral exciton in InAs/GaAs quantum dots (QDs). The possibility to record non- zero polarization of the neutral exciton is explained in terms of different capture times of the light electron compared with the heavier holes into the QDs from the wetting layer. This interpretation is supported by the progressive reduction of the polarization degree with increasing QD density, and also with increasing temperature.

Place, publisher, year, edition, pages
Institute of Physics , 2010. Vol. 21, no 34
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Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-58644DOI: 10.1088/0957-4484/21/34/345401ISI: 000280632500009OAI: oai:DiVA.org:liu-58644DiVA: diva2:344890
Note
Original Publication: Evgenii Moskalenko, Arvid Larsson and Per-Olof Holtz, Spin polarization of neutral excitons in quantum dots: the role of the carrier collection area, 2010, NANOTECHNOLOGY, (21), 34, 345501. http://dx.doi.org/10.1088/0957-4484/21/34/345401 Copyright: Institute of Physics; 1999 http://www.iop.org/ Available from: 2010-08-22 Created: 2010-08-20 Last updated: 2011-02-03Bibliographically approved

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Moskalenko, EvgeniiLarsson, ArvidHoltz, Per-Olof

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