Effective dielectric constant of nanostructured ...
Type de document :
Article dans une revue scientifique
DOI :
Titre :
Effective dielectric constant of nanostructured Si layers
Auteur(s) :
Delerue, Christophe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Titre de la revue :
Applied Physics Letters
Pagination :
173117-1-3
Éditeur :
American Institute of Physics
Date de publication :
2006
ISSN :
0003-6951
Discipline(s) HAL :
Sciences de l'ingénieur [physics]
Résumé en anglais : [en]
We calculate the dielectric response of single layers of cubic and spherical Si nanocrystals using a self-consistent tight binding approach. We show that the effective dielectric constant is strongly influenced by the ...
Lire la suite >We calculate the dielectric response of single layers of cubic and spherical Si nanocrystals using a self-consistent tight binding approach. We show that the effective dielectric constant is strongly influenced by the nanostructuring, leading to a strong reduction with respect to the bulk dielectric constant and to the value for the perfectly crystalline layer. These results are explained by the effect of the local fields and by the reduction of the dielectric response near the surface of the nanocrystals. We provide analytical expressions for the effective dielectric constant versus size.Lire moins >
Lire la suite >We calculate the dielectric response of single layers of cubic and spherical Si nanocrystals using a self-consistent tight binding approach. We show that the effective dielectric constant is strongly influenced by the nanostructuring, leading to a strong reduction with respect to the bulk dielectric constant and to the value for the perfectly crystalline layer. These results are explained by the effect of the local fields and by the reduction of the dielectric response near the surface of the nanocrystals. We provide analytical expressions for the effective dielectric constant versus size.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Non spécifiée
Vulgarisation :
Non
Source :