Spin relaxation dynamics in highly uniform InAs quantum dots

A. Tackeuchi*, Y. Suzuki, M. Murayama, T. Kitamura, T. Kuroda, T. Takagahara, K. Yamaguchi

*この研究の対応する著者

研究成果: Conference contribution

抄録

We have investigated carrier spin dynamics in highly uniform self-assembled InAs quantum dots. The highly uniform quantum dots allowed us to observe the spin dynamics in the ground state and that in the first excited state separately, without the disturbance of inhomogeneous broadening. The spin relaxation times in the ground state and the first excited state were measured to be 1.0 ns and 0.6 ns, respectively. Our measurements reveal the absence of the carrier density dependence of the spin relaxation time. The measured spin relaxation time decreases rapidly from 1.1 ns at 10 K to 200 ps at 130 K. This large change in the spin relaxation time is well explained in terms of the mechanism of acoustic phonon emission.

本文言語English
ホスト出版物のタイトルPHYSICS OF SEMICONDUCTORS
ホスト出版物のサブタイトル27th International Conference on the Physics of Semiconductors, ICPS-27
ページ1391-1392
ページ数2
DOI
出版ステータスPublished - 2005 6月 30
イベントPHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27 - Flagstaff, AZ, United States
継続期間: 2004 7月 262004 7月 30

出版物シリーズ

名前AIP Conference Proceedings
772
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

ConferencePHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
国/地域United States
CityFlagstaff, AZ
Period04/7/2604/7/30

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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