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Spin Polarizing Neutral Excitons In Quantum Dots
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
A. F. Ioffe Physical‐Technical Institute, 194021, Polytechnicheskaya 26, St. Petersburg, Russia .
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
2011 (English)Conference paper, Published paper (Other academic)
Abstract [en]

A high degree of spin polarization for the neutral exciton in individual InAs quantum dots, without any external magnetic field applied, is demonstrated. The polarization mechanism is shown to be due to the difference in capture time into the QD for the electrons and holes after photo excitation in the wetting layer. This leads to optical pumping of the QD nuclei by spin polarized electrons and hence suppression of the anisotropic electron—hole exchange interaction.

Place, publisher, year, edition, pages
2011. Vol. 1399, no 1, 435-436 p.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-118731DOI: 10.1063/1.3666440ISBN: 978-0-7354-1002-2 (print)OAI: oai:DiVA.org:liu-118731DiVA: diva2:816589
Conference
30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS
Available from: 2015-06-03 Created: 2015-06-03 Last updated: 2015-06-18

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Moskalenko, E. S.Holtz, Per-Olof
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