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Article Dans Une Revue Superlattices and Microstructures Année : 2018

Spin relaxation of indirect excitons in asymmetric coupled quantum wells

Résumé

Density and spin dynamics of indirect excitons in asymmetric GaAs/AlGaAs coupled quantum wells is studied by time-resolved photoluminescence. Under electric bias applied in the growth direction the lifetime of indirect excitons formed by an electron in a wide and hole in a narrow quantum well reaches 12 ns, while the circular polarisation lifetime is about 5 ns. The structure is suited for further studies of dark indirect excitons by time-resolved pump-probe spectroscopy
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Dates et versions

hal-01909352 , version 1 (31-10-2018)

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Chahine Abbas, François Chiaruttini, Steeve Cronenberger, Denis Scalbert, Francois Dubin, et al.. Spin relaxation of indirect excitons in asymmetric coupled quantum wells. Superlattices and Microstructures, 2018, 122, pp.643. ⟨10.1016/j.spmi.2018.06.015⟩. ⟨hal-01909352⟩
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