Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot

Sasakura, H.; Adachi, S.; Muto, S.; Hirose, S.; Song, H. Z.; Takatsu, M.

Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot

Sasakura, H.; Adachi, S.; Muto, S. et al.

Journal of Applied Physics, 2008, 103(10), 103530-1-103530-5

Permalink : https://hdl.handle.net/2115/49866

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アクセス権	open access
URI	https://hdl.handle.net/2115/49866
タイトル	Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot
著者	Sasakura, H. ; Adachi, S. ; Muto, S. ; Hirose, S. ; Song, H. Z. ; Takatsu, M.
著者名 Sasakura, H.
著者名 Adachi, S.
著者名 Muto, S.
著者名 Hirose, S.
著者名 Song, H. Z.
著者名 Takatsu, M.
言語	英語
発行日	2008
出版者	American Institute of Physics
収録物名	Journal of Applied Physics
巻(号)	103(10)
ページ	103530-1-103530-5
抄録	The oscillations of excitonic and nuclear spin polarizations in an optically pumped single self-assembled In0.8Al0.2As/Al0.35Ga0.65As quantum dot QD were clearly observed under the excitation of a wetting layer edge at B=5 T. This indicates that an exciton pair with opposite spins is alternatively created via the half-localized state only by changing the delay time between cross-linearly polarized pulse pair. Furthermore, periodic modulation of Zeeman energy synchronizes the degree of circular polarization of photoluminescence from a single QD, indicating that the Overhauser field follows the optically created electron spin polarization in half-localized states of a QD, and the half-localized state in a QD consists of a confined electron in a discrete state and hole in the continuum state.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0021-8979
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.2927448