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Dominant factors limiting efficiency of optical spin detection in ZnO-based materials
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
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2008 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 92, 092103- p.Article in journal (Refereed) Published
Abstract [en]

Two dominant factors limiting efficiency of optical spin detection in ZnO-based materials system are identified from time-resolved optical orientation and magneto-optical studies. The first is related to the fundamental band structure of the materials characterized by a weak spin-orbit interaction. It leads to cancellation of circular polarization from the optical transitions between the conduction band and the A and B valence band states, which would otherwise carry the desired information on spin polarization of carriers. The second limiting factor is shown to be efficient carrier/exciton spin relaxation, i.e., about 45-80 ps.

Place, publisher, year, edition, pages
2008. Vol. 92, 092103- p.
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Natural Sciences
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URN: urn:nbn:se:liu:diva-44343DOI: 10.1063/1.2885732Local ID: 76366OAI: oai:DiVA.org:liu-44343DiVA: diva2:265205
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Chen, WeiminBuyanova, Irina

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