Exciton spin dynamics in GaAs quantum wells

S. Adachi, T. Miyashita, S. Takeyama, Y. Takagi, Atsushi Tackeuchi

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We have investigated the temperature dependence of the exciton spin relaxation between 10 and 300 K in undoped GaAs quantum wells by using the nonlinear transmission pump-probe and the four-wave-mixing techniques. The electron spin relaxation rate above 40 K is found to be proportional to the product of the temperature and the momentum relaxation time, which indicates that the D'yakonov-Perel' interaction governs the spin-flip dynamics. The temperature independence below 30 K is considered to be due to the band-mixing effect that determines the hole spin relaxation, and the spin exchange is effective to the exciton spin relaxation in these temperatures.

Original languageEnglish
Pages (from-to)307-308
Number of pages2
JournalJournal of Luminescence
Volume72-74
Publication statusPublished - 1997 Jun
Externally publishedYes

Fingerprint

Spin dynamics
spin dynamics
Semiconductor quantum wells
excitons
quantum wells
Temperature
Four wave mixing
spin exchange
four-wave mixing
electron spin
Relaxation time
temperature
Momentum
relaxation time
Pumps
Electrons
pumps
momentum
temperature dependence
LDS 751

Keywords

  • Exciton spin relaxation
  • Gaas
  • Momentum relaxation
  • Quantum wells

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

Adachi, S., Miyashita, T., Takeyama, S., Takagi, Y., & Tackeuchi, A. (1997). Exciton spin dynamics in GaAs quantum wells. Journal of Luminescence, 72-74, 307-308.

Exciton spin dynamics in GaAs quantum wells. / Adachi, S.; Miyashita, T.; Takeyama, S.; Takagi, Y.; Tackeuchi, Atsushi.

In: Journal of Luminescence, Vol. 72-74, 06.1997, p. 307-308.

Research output: Contribution to journalArticle

Adachi, S, Miyashita, T, Takeyama, S, Takagi, Y & Tackeuchi, A 1997, 'Exciton spin dynamics in GaAs quantum wells', Journal of Luminescence, vol. 72-74, pp. 307-308.
Adachi S, Miyashita T, Takeyama S, Takagi Y, Tackeuchi A. Exciton spin dynamics in GaAs quantum wells. Journal of Luminescence. 1997 Jun;72-74:307-308.
Adachi, S. ; Miyashita, T. ; Takeyama, S. ; Takagi, Y. ; Tackeuchi, Atsushi. / Exciton spin dynamics in GaAs quantum wells. In: Journal of Luminescence. 1997 ; Vol. 72-74. pp. 307-308.
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