Super-long life time for 2D cyclotron spin-flip excitons

An experimental technique for the indirect manipulation and detection of electron spins entangled in two-dimensional magnetoexcitons has been developed. The kinetics of the spin relaxation has been investigated. Photoexcited spin-magnetoexcitons were found to exhibit extremely slow relaxation in spe...

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Bibliographic Details
Published inScientific reports Vol. 5; no. 1; p. 10354
Main Authors Kulik, L. V., Gorbunov, A. V., Zhuravlev, A. S., Timofeev, V. B., Dickmann, S., Kukushkin, I. V.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 19.05.2015
Nature Publishing Group
Subjects
140/133
639/766/119/1001
639/766/119/2794
Energy
Humanities and Social Sciences
Magnetic fields
multidisciplinary
Science
Temperature effects
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Summary:An experimental technique for the indirect manipulation and detection of electron spins entangled in two-dimensional magnetoexcitons has been developed. The kinetics of the spin relaxation has been investigated. Photoexcited spin-magnetoexcitons were found to exhibit extremely slow relaxation in specific quantum Hall systems, fabricated in high mobility GaAs/AlGaAs structures; namely, the relaxation time reaches values over one hundred microseconds. A qualitative explanation of this spin-relaxation kinetics is presented. Its temperature and magnetic field dependencies are discussed within the available theoretical framework.
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ISSN:2045-2322
2045-2322
DOI:10.1038/srep10354