Spin relaxation of indirect excitons in asymmetric coupled quantum wells

Abstract : 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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Journal articles
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https://hal.archives-ouvertes.fr/hal-01909352
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Submitted on : Wednesday, October 31, 2018 - 9:41:32 AM
Last modification on : Wednesday, April 10, 2019 - 5:34:05 PM

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  • HAL Id : hal-01909352, version 1

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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, Elsevier, 2018, 122, pp.643. ⟨hal-01909352⟩

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