Effect of the electron-phonon coupling on the ground state of a D- center in a spherical quantum dot

Authors
Szafran, B Stebe, B Adamowski, J Bednarek, S
Citation
B. Szafran et al., Effect of the electron-phonon coupling on the ground state of a D- center in a spherical quantum dot, PHYS REV B, 60(23), 1999, pp. 15558-15561
Citations number
25
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
23
Year of publication
1999
Pages
15558 - 15561
Database
ISI
SICI code
0163-1829(199912)60:23<15558:EOTECO>2.0.ZU;2-6
Abstract
The influence of the electron-phonon coupling on the properties of a negati vely charged donor center (D-) confined in a semiconductor spherical quantu m dot embedded in a glass matrix has been studied by variational means with in the strong-coupling (Pekar) approach. A considerable enhancement of the binding is found for the D- ground state, which results from the strong con finement of electrons and electron-phonon coupling. Numerical results are g iven for quantum dots made of CdSe nanocrystals of variable radii. [S0163-1 829(99)00544-5].