%0 Journal Article
%T Fast exciton spin relaxation in single quantum dots
%+ Laboratoire Pierre Aigrain (LPA)
%+ Laboratoire de Spectrométrie Physique (LSP)
%+ Nanophysique et Semiconducteurs (NPSC)
%A Favero, I.
%A Cassabois, Guillaume
%A Voisin, C.
%A Delalande, C.
%A Roussignol, P.
%A Ferreira, R.
%A Couteau, C.
%A Poizat, Jean-Philippe
%A Gerard, Jm
%< avec comité de lecture
%Z GES:05-085
%Z Optique Cohérente et Non Linéaire
%@ 1098-0121
%J Physical Review B: Condensed Matter and Materials Physics (1998-2015)
%I American Physical Society
%V 71
%P 233304
%8 2005
%D 2005
%Z cond-mat/0505210
%R 10.1103/PhysRevB.71.233304
%K FINE-STRUCTURE
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X 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 nonresonant excitation. We find that the longitudinal exciton spin relaxation time is strikingly short (<= 100 ps) even at low temperature. This result breaks down the picture of a frozen exciton spin in quantum dots.
%G English
%L hal-00546623
%U https://hal.science/hal-00546623
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