Modified Lee-Low-Pines Polaron in Spherical Quantum Dot in an Electric Field. Part 2: Weak Coupling and Temperature Effect
A. J. Fotue, N. Issofa, M. Tiotsop, S. C. Kenfack, M. P. Tabue Djemmo, A. V. Wirngo, H. Fotsin, L. C. Fai
Physical Science International Journal · pp. 97–106 · Published 4 Jun 2015
10.9734/PSIJ/2015/18439Abstract
In this paper, we investigate the influence of an electric field on the ground state energy of a polaron in a spherical semiconductor quantum dot (QD) using the modified Lee Low Pines (LLP) method. The numerical results show an increase of the ground state energy with the increase of the electric field and the confinement lengths. The modulation of the electric and the confinement lengths enables the control of the decoherence of the system. It is also seen that the temperature is a decreasing function of the electron-phonon coupling constant and the longitudinal confinement length, whereas it increases with the electric field strength.
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