Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1813890 | Physica B: Condensed Matter | 2008 | 4 Pages |
Abstract
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 is the polaron transit from the ground state to the first-excited state after absorbing a LO-phonon and it changes the polaron lifetime. Numerical calculations are performed and the results illustrate the relations of the ground-state lifetime of the bound polaron on the ground-state energy of polaron, the electron-LO-phonon coupling strength, the confinement length of the quantum dot, the temperature and the Coulomb binding parameter.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Wei-Ping Li, Zi-Wu Wang, Ji-Wen Yin, Yi-Fu Yu, Jing-Lin Xiao,