Spin relaxation dynamics in highly uniform InAs quantum dots

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

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.

元の言語English
ホスト出版物のタイトルAIP Conference Proceedings
ページ1391-1392
ページ数2
772
DOI
出版物ステータスPublished - 2005 6 30
外部発表Yes
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 262004 7 30

Other

OtherPHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
United States
Flagstaff, AZ
期間04/7/2604/7/30

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relaxation time
quantum dots
spin dynamics
ground state
excitation
disturbances
acoustics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Tackeuchi, A., Suzuki, Y., Murayama, M., Kitamura, T., Kuroda, T., Takagahara, T., & Yamaguchi, K. (2005). Spin relaxation dynamics in highly uniform InAs quantum dots. : AIP Conference Proceedings (巻 772, pp. 1391-1392) https://doi.org/10.1063/1.1994633

Spin relaxation dynamics in highly uniform InAs quantum dots. / Tackeuchi, A.; Suzuki, Y.; Murayama, M.; Kitamura, T.; Kuroda, T.; Takagahara, Toshihide; Yamaguchi, K.

AIP Conference Proceedings. 巻 772 2005. p. 1391-1392.

研究成果: Conference contribution

Tackeuchi, A, Suzuki, Y, Murayama, M, Kitamura, T, Kuroda, T, Takagahara, T & Yamaguchi, K 2005, Spin relaxation dynamics in highly uniform InAs quantum dots. : AIP Conference Proceedings. 巻. 772, pp. 1391-1392, PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27, Flagstaff, AZ, United States, 04/7/26. https://doi.org/10.1063/1.1994633
Tackeuchi A, Suzuki Y, Murayama M, Kitamura T, Kuroda T, Takagahara T その他. Spin relaxation dynamics in highly uniform InAs quantum dots. : AIP Conference Proceedings. 巻 772. 2005. p. 1391-1392 https://doi.org/10.1063/1.1994633
Tackeuchi, A. ; Suzuki, Y. ; Murayama, M. ; Kitamura, T. ; Kuroda, T. ; Takagahara, Toshihide ; Yamaguchi, K. / Spin relaxation dynamics in highly uniform InAs quantum dots. AIP Conference Proceedings. 巻 772 2005. pp. 1391-1392
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