Anisotropic parabolic confinement potential effect on polaron ground state and phonon's number in the RbCl asymmetrical quantum wells

The effect of anisotropic parabolic confinement potential (APCP) on the strong-coupling (SC) polaron ground state and phonon mean number (PMN) of RbCl asymmetrical semi-exponential quantum wells (ASEQWs) have been investigated on the basis of Lee–Low–Pines (LLP) unitary transformation and linear combination operation methods. It was found that (1) the GSBE and PMN of SC polaron in ASEQWs were decreasing functions of the parameter σ and increasing functions of parameters 𝑉0 of asymmetrical semi-exponential potential (ASEP). (2) The GSBE and PMN were elevated with raising the ECSs of APCP along both 𝑥 and 𝑦 directions. (3) These results could be ascribed to fascinating quantum dimension confinement effects. (author)