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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 9, Pages 635–640 (Mi jetpl3270)  

This article is cited in 14 scientific papers (total in 14 papers)

CONDENSED MATTER

Optical orientation of nuclei in nitrogen alloys GaAsN at room temperature

V. K. Kalevichab, M. M. Afanas'evba, A. Yu. Shiryaeva, A. Yu. Egorova

a Ioffe Physico-Technical Institute, Russian Academy of Sciences
b Saint-Petersburg State University
References:
Abstract: The intensity and giant circular polarization of edge luminescence in a longitudinal magnetic field have been measured in nitrogen alloys GaAsN under circularly polarized pumping. It has been found that these dependences are shifted with respect to zero field by a value $B_{\textrm{eff}}$. The magnitude of the internal field $B_{\textrm{eff}}$ increases with the pumping intensity and reaches saturation ($\approx250$ G) at large excitation densities. The saturation of the B eff field with growth of pumping indicates that this is a field of nuclei, polarized dynamically due to hyperfine interaction with optically oriented deep paramagnetic centers, rather than a field of exchange interaction created on the center by spin-polarized photo-excited conduction electrons. The short time of nuclear polarization by electrons ($<15\,\mu$s), measured under modulation of circular polarization of the exciting light with high frequency, points to a small number of nuclei undergoing hyperfine interaction with an electron localized at a center.
Received: 10.09.2012
English version:
Journal of Experimental and Theoretical Physics Letters, 2012, Volume 96, Issue 9, Pages 567–571
DOI: https://doi.org/10.1134/S0021364012210060
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: V. K. Kalevich, M. M. Afanas'ev, A. Yu. Shiryaev, A. Yu. Egorov, “Optical orientation of nuclei in nitrogen alloys GaAsN at room temperature”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:9 (2012), 635–640; JETP Letters, 96:9 (2012), 567–571
Citation in format AMSBIB
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\paper Optical orientation of nuclei in nitrogen alloys GaAsN at room temperature
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\vol 96
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\pages 635--640
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  • https://www.mathnet.ru/eng/jetpl/v96/i9/p635
  • This publication is cited in the following 14 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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