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Spin-filtering effect in GaAsN: electron-nuclear spin dynamics of Ga3+ centers

Abstract : The impact of Ga3+ centers in the spin-filtering effect observed in GaAsN samples is investigated through a model based on the master equation approach. Our results, compared with experimental data, show that, Ga3+ are essential to understanding the behavior of the photoluminescence intensity and degree of circular polarization as functions of a Faraday configuration magnetic field. The model presented here takes into account the interplay of Ga2+ and Ga3+ centers, Zeeman and hyperfine interaction. The various processes that drive the spin-filtering effect, as the spin selective capture of conduction band electrons into Ga centers are also considered here.
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https://hal.insa-toulouse.fr/hal-02057281
Contributor : Insa Toulouse Scd <>
Submitted on : Tuesday, March 5, 2019 - 11:15:58 AM
Last modification on : Wednesday, May 27, 2020 - 7:20:02 AM

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  • HAL Id : hal-02057281, version 1

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V. Ibarra-Sierra, J. Sandoval-Santana, S. Azaizia, Hélène Carrère, L. Bakaleinikov, et al.. Spin-filtering effect in GaAsN: electron-nuclear spin dynamics of Ga3+ centers. Journal of Materials Science: Materials in Electronics, Springer Verlag, 2018, 29 (18), pp.15307-15314. ⟨hal-02057281⟩

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