Fast exciton spin relaxation in single quantum dots - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2005

Fast exciton spin relaxation in single quantum dots

Résumé

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.

Mots clés

Dates et versions

hal-00546623 , version 1 (14-12-2010)

Identifiants

Citer

I. Favero, Guillaume Cassabois, C. Voisin, C. Delalande, P. Roussignol, et al.. Fast exciton spin relaxation in single quantum dots. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2005, 71, pp.233304. ⟨10.1103/PhysRevB.71.233304⟩. ⟨hal-00546623⟩
186 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More