Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

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

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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 Nov 13

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Otake, H., Kuroda, T., Fujita, T., Ushiyama, T., Tackeuchi, A., Chinone, T., Liang, J. H., & 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