Nanosecond excitonic spin relaxation in cubic GaN

Atsushi Tackeuchi, Hirotaka Otake, Yusuke Ogawa, Takafumi Ushiyama, Taisuke Fujita, Fumiyoshi Takano, Hiro Akinaga

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The excitonic spin relaxation in cubic GaN is observed by spin-dependent pump and probe reflectance measurements with sub-picosecond time resolution. The spin relaxation times at 15 - 75 K are found to be longer than 5 ns and short spin relaxation times on the picosecond order are not present. Although these long spin relaxation times are in striking contrast to the sub-picosecond spin relaxation of A-band free excitons in hexagonal GaN, they are consistent with the dependence that spin relaxation time becomes longer for wider-band-gap zincblende semiconductors.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Pages1335-1336
    Number of pages2
    Volume893
    DOIs
    Publication statusPublished - 2007
    Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna
    Duration: 2006 Jul 242006 Jul 28

    Other

    Other28th International Conference on the Physics of Semiconductors, ICPS 2006
    CityVienna
    Period06/7/2406/7/28

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    Keywords

    • Cubic
    • Exciton
    • GaN
    • Spin
    • Spin relaxation
    • Zincblende

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Tackeuchi, A., Otake, H., Ogawa, Y., Ushiyama, T., Fujita, T., Takano, F., & Akinaga, H. (2007). Nanosecond excitonic spin relaxation in cubic GaN. In AIP Conference Proceedings (Vol. 893, pp. 1335-1336) https://doi.org/10.1063/1.2730396