Effects of spin on the properties of strong-coupled bound magnetopolaron in quantum dot

On the basis of the Huybrechts' strong-coupled model, the Tokuda modified linear combination operator method and the unitary transformation method are used to study the properties of the strong-coupled bound magnetopolaron considering the influence of the spin in the quantum dot (QD). The expressions for the ground-state energy of the polaron as a function of the confinement length of the QD, the magnetic field and the coulomb bound potential are derived. Numerical calculation is performed and the results illustrate that the ground-state energy of the magnetopolaron is composed of three parts. Finally, we discuss the contribution of the spin to the ground-state energy, the self-energy, the Landau ground-state energy and the coulomb bound energy of the bound magnetopolaron and find the spin has very important effects on the properties of the polaron. (C) 2009 Elsevier B.V. All rights reserved.