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- W4387561346 abstract "Time-resolved and time-integrated circularly polarized photoluminescence of excitons and trions in external magnetic fields up to 10 T has been studied in undoped and n-type doped quantum well structures based on ZnSe. In an undoped structure, a circular polarization of photoluminescence induced by magnetic fields corresponded to the Boltzmann distribution of excitons on Zeeman sublevels. The inverse spin orientation of excitons is observed in doped samples with a carrier density of $3 times 10^{10}$ cm$^{-2}$ and higher. Model calculations show that the reason for the inverse spin orientation is the effective depletion of the lowest-exciton Zeeman sublevel as a result of the spin-dependent formation of trions. The trion formation time as a result of exciton-electron binding was determined as 2 ps. This is noticeably shorter than the characteristic time of the exciton-photon interaction. The observed effect can be considered as a way of spin manipulation by electric fields." @default.
- W4387561346 created "2023-10-12" @default.
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- W4387561346 date "2023-10-10" @default.
- W4387561346 modified "2023-10-13" @default.
- W4387561346 title "Inverse exciton spin orientation due to trion formation in modulation doped quantum wells" @default.
- W4387561346 doi "https://doi.org/10.48550/arxiv.2310.06651" @default.
- W4387561346 hasPublicationYear "2023" @default.
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