Article ID Journal Published Year Pages File Type
1813890 Physica B: Condensed Matter 2008 4 Pages PDF
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
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