Spin relaxation dynamics in highly uniform InAs quantum dots

A. Tackeuchi, R. Ohtsubo, K. Yamaguchi, M. Murayama, T. Kitamura, T. Kuroda, Toshihide Takagahara

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Abstract

The carrier spin dynamics in self-assembled InAs quantum dots (QD) was investigated using spin dependent time-resolved photoluminescence (PL) measurements. The spin dynamics was observed in ground state and second state without disturbance of inhomogeneous broadening in highly uniform QDs. The spin relaxation time in ground state was 1.0 ns and second state was 0.6 ns. The results show decrease in spin relaxation time from 1.1 ns at 10 K to 200 ps at 130 K.

Original languageEnglish
Pages (from-to)3576-3578
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number18
DOIs
Publication statusPublished - 2004 May 3
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Tackeuchi, A., Ohtsubo, R., Yamaguchi, K., Murayama, M., Kitamura, T., Kuroda, T., & Takagahara, T. (2004). Spin relaxation dynamics in highly uniform InAs quantum dots. Applied Physics Letters, 84(18), 3576-3578. https://doi.org/10.1063/1.1737068