https://doi.org/10.1007/s100510050436
A bound polaron in a spherical quantum dot
1
Department of Physics, Guangzhou Teachers College, Guangzhou
510400, P.R. China
2
CCAST (World Laboratory), P.O. Box 8730, Beijing
100080, China and Department of Physics, Guangzhou Teachers
College, Guangzhou 510400, P.R. China
Corresponding author: a ccyl@guangztc.edu.cn
Received:
13
October
1997
Revised:
4
March
1998
Accepted:
26
May
1998
Published online: 15 September 1998
The binding energy of a bound polaron in a spherical quantum dot has been investigated by using the variational method. The influence of LO and SO phonons have taken into consideration. Result shows that the phonon contribution to the binding energy is dependent on the size of the quantum dot as well as the position of the impurity in the quantum dot. Numerical calculation on the ZnSe quantum dot shows that such contribution is about 5% to 20% of the total binding energy.
PACS: 71.38.+i – Polarons and electron-phonon interactions / 73.20.Dx – Electron states in low-dimensional structures / 71.55.Gs – II-VI semiconductors
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
