Spin transport of indirect excitons
J.R. Leonard, Y. Kuznetsova, Sen Yang, L.V. Butov, T. Ostatnick\'y, A., Kavokin, A.C. Gossard
TL;DR
This paper reports the observation of spin transport in indirect excitons within coupled quantum wells, highlighting their long spin relaxation times and lifetimes which enable transport over several microns.
Contribution
It demonstrates the experimental measurement of spin transport in indirect excitons, a novel observation in GaAs/AlGaAs quantum well structures.
Findings
Spin transport observed over several microns.
Long spin relaxation time of indirect excitons.
Extended lifetime of indirect excitons facilitates transport.
Abstract
Spin transport of indirect excitons in GaAs/AlGaAs coupled quantum wells was observed by measuring the spatially resolved circular polarization of exciton emission. Exciton spin transport over several microns originates from a long spin relaxation time and long lifetime of indirect excitons.
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