Exciton spin relaxation in GaN observed by spin grating experiment

Ishiguro, T.; Toda, Y.; Adachi, S.

Applied Physics Letters, 2007, 90(1), 011904

Permalink : https://hdl.handle.net/2115/17233

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アクセス権	open access
URI	https://hdl.handle.net/2115/17233
タイトル	Exciton spin relaxation in GaN observed by spin grating experiment
著者	Ishiguro, T. ; Toda, Y. ; Adachi, S.
著者名 Ishiguro, T.
e-Rad_Researcher 00313106 著者名 Toda, Y.
e-Rad_Researcher 10221722 著者名 Adachi, S.
言語	英語
発行日	2007-01-01
出版者	American Institute of Physics
収録物名	Applied Physics Letters
巻(号)	90(1)
ページ	011904
抄録	The authors studied the exciton spin relaxation of bulk GaN by creating spin polarization gratings using degenerate four-wave mixing spectroscopy. The spectrally resolved analysis achieved with this technique facilitated the direct evaluation of spin polarizations in the individual excitons (A and B excitons). The spin polarizations for each exciton decay very quickly (γs～1 ps) at low temperatures. Moreover the γs is faster than the dephasing time T2 throughout the measured temperature range, suggesting the existence of fast intrinsic spin relaxation processes, which can be attributed to a large exchange constant characterized in GaN. ©2007 American Institute of Physics
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	© 2007 American Institute of Physics
PISSN	0003-6951
EISSN	0003-6951
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.2430402