Effects of Temperature on the Ground State Energy of the Strong Coupling Polaron in a RbCl Asymmetrical Semi-Exponential Quantum Well

摘要

In this article, temperature effects on strong coupling polaron in a RbCl asymmetrical semi-exponential quantum well (ASEQW) are studied by applying the quantum statistical theory (QST). Based on the well-known LLP unitary transformation and linear combination operation (LCO) methods, we have derived the ground state energy and the mean phonon number of strong coupling polaron in the ASEQW. According to the obtained results, ground state energy decreases with increasing temperature. The ground state energy and mean phonon number are decaying functions with raising parameter sigma, whereas they are enhancing ones with lifting parameter U-0.