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arXiv · 1507.03089

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

L. V. Kulik·A. V. Gorbunov·A. S. Zhuravlev·V. B. Timofeev·S. Dickmann·I. V. Kukushkin
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Abstract

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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L. V. Kulik, A. V. Gorbunov, A. S. Zhuravlev, V. B. Timofeev, S. Dickmann, I. V. Kukushkin. 2015-07-11. Super-long life time for 2D cyclotron spin-flip excitons. https://arxiv.org/abs/1507.03089

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