Spin-exchange interaction in ZnO-based quantum wells. - Centre de Recherche sur l'Hétéro-Epitaxie et ses Applications Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2006

Spin-exchange interaction in ZnO-based quantum wells.

Résumé

Wurtzitic ZnO∕(Zn,Mg)O quantum wells grown along the (0001) direction permit unprecedented tunability of the short-range spin exchange interaction. In the context of large exciton binding energies and electron-hole exchange interaction in ZnO, this tunability results from the competition between quantum confinement and giant quantum confined Stark effect. By using time-resolved photoluminescence we identify, for well widths under 3nm, the redistribution of oscillator strengths between the A and B excitonic transitions, due to the enhancement of the exchange interaction. Conversely, for wider wells, the redistribution is canceled by the dominant effect of internal electric fields, which dramatically reduces the exchange energy.
Fichier principal
Vignette du fichier
PRB74-153302-Gil-2006-arxiv.pdf (160.21 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01304535 , version 1 (09-02-2019)

Identifiants

Citer

Bernard Gil, Pierre Lefebvre, Thierry Bretagnon, Thierry Guillet, J.A. Sans, et al.. Spin-exchange interaction in ZnO-based quantum wells.. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2006, 74 (15), pp.153302. ⟨10.1103/PhysRevB.74.153302⟩. ⟨hal-01304535⟩
45 Consultations
38 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More