Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

H. Otake, T. Kuroda, T. Fujita, T. Ushiyama, Atsushi Tackeuchi, T. Chinone, J. H. Liang, M. Kajikawa

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].

    Original languageEnglish
    Article number182110
    JournalApplied Physics Letters
    Volume89
    Issue number18
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    wurtzite
    excitons
    relaxation time
    electron spin
    pumps
    reflectance
    temperature dependence
    probes
    temperature

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Otake, H., Kuroda, T., Fujita, T., Ushiyama, T., Tackeuchi, A., Chinone, T., ... Kajikawa, M. (2006). Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN. Applied Physics Letters, 89(18), [182110]. https://doi.org/10.1063/1.2374686

    Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN. / Otake, H.; Kuroda, T.; Fujita, T.; Ushiyama, T.; Tackeuchi, Atsushi; Chinone, T.; Liang, J. H.; Kajikawa, M.

    In: Applied Physics Letters, Vol. 89, No. 18, 182110, 2006.

    Research output: Contribution to journalArticle

    Otake, H, Kuroda, T, Fujita, T, Ushiyama, T, Tackeuchi, A, Chinone, T, Liang, JH & Kajikawa, M 2006, 'Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN', Applied Physics Letters, vol. 89, no. 18, 182110. https://doi.org/10.1063/1.2374686
    Otake, H. ; Kuroda, T. ; Fujita, T. ; Ushiyama, T. ; Tackeuchi, Atsushi ; Chinone, T. ; Liang, J. H. ; Kajikawa, M. / Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN. In: Applied Physics Letters. 2006 ; Vol. 89, No. 18.
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    AU - Otake, H.

    AU - Kuroda, T.

    AU - Fujita, T.

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    AU - Tackeuchi, Atsushi

    AU - Chinone, T.

    AU - Liang, J. H.

    AU - Kajikawa, M.

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    AB - The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].

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