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

*Corresponding author for this work

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11 Citations (Scopus)


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
Issue number18
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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