Fast exciton spin relaxation in single quantum dots

I. Favero; Guillaume Cassabois; C. Voisin; C. Delalande; Ph. Roussignol; R. Ferreira; C. Couteau; J. P. Poizat; J. M. Gérard

doi:10.1103/PhysRevB.71.233304

Fast exciton spin relaxation in single quantum dots

Other Condensed Matter 2016-08-16 v1

Authors: I. Favero , Guillaume Cassabois , C. Voisin , C. Delalande , Ph. Roussignol , R. Ferreira , C. Couteau , J. P. Poizat , J. M. Gérard

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Abstract

Exciton spin relaxation is investigated in single epitaxially grown semiconductor quantum dots in order to test the expected spin relaxation quenching in this system. We study the polarization anisotropy of the photoluminescence signal emitted by isolated quantum dots under steady-state or pulsed non-resonant excitation. We find that the longitudinal exciton spin relaxation time is strikingly short ( $\leq$ 100 ps) even at low temperature. This result breaks down the picture of a frozen exciton spin in quantum dots.

Keywords

quantum dot excitons spin relaxation excitons in semiconductors

Cite

@article{arxiv.cond-mat/0505210,
  title  = {Fast exciton spin relaxation in single quantum dots},
  author = {I. Favero and Guillaume Cassabois and C. Voisin and C. Delalande and Ph. Roussignol and R. Ferreira and C. Couteau and J. P. Poizat and J. M. Gérard},
  journal= {arXiv preprint arXiv:cond-mat/0505210},
  year   = {2016}
}

Fast exciton spin relaxation in single quantum dots

Abstract

Keywords

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