The ground-state energy of bound polaron was obtained with strong electron-LO-phonon coupling using a variational method of the Pekar type in a parabolic quantum dot (QD). Quantum transition occurred in the quantum system due to the electron-phonon interaction and the influence of temperature. That
Ground and first excited state energies of impurity-bound polaron in a parabolic quantum dot
โ Scribed by Shi-Hua Chen; Jing-Lin Xiao
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 200 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-9477
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โฆ Synopsis
A Landau-Pekar variational theory is employed to obtain the ground and the first excited state binding energies of an electron bound to a Coulomb impurity in a polar semiconductor quantum dot (QD) with parabolic confinement in both two and three dimensions. It is found that the binding energy increase with increasing the Coulomb binding parameter and increase with the decrease in size of the QD and is much more pronounced with decreasing dimensionality.
๐ SIMILAR VOLUMES
The ground-state energy of bound polaron in quantum confinement has been calculated by using N-variational parameters to Feynmans approximation action. The method of calculation is based on the Jensen-Feynman inequality which provides an upper bound for the ground-state energy of the polaron in quan