Spin Polarizing Neutral Excitons In Quantum Dots
2011 (English)Conference paper (Other academic)
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.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-118731DOI: 10.1063/1.3666440ISBN: 978-0-7354-1002-2OAI: oai:DiVA.org:liu-118731DiVA: diva2:816589
30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS