Vibrational frequency of strong-coupling polaron
in asymmetrical semi-exponential quantum well

Abstract

Abstract: By using Huybrechts′ linear combination operator and the second Lee-Low-Pines (LLP) unitary transformation method, the properties of the strong-coupling polaron in RbCl asymmetrical semiexponential quantum well are investigated. The vibrational frequency and ground state energy of the strong-coupling polaron in a RbCl asymmetrical semi-exponential quantum well are obtained, and the variation of the vibrational frequency and ground state energy with the two positive parameters (U0 and ) of the asymmetrical semi-exponential confinement potential is derived theoretically. RbCl crystal material is selected for numerical calculation, and the results indicate that U0 and are important physical quantities for investigating the properties of the strong-coupling polaron in asymmetrical semiexponential quantum well, and the vibrational frequency and ground state energy of the strong-coupling polaron increase with the increase of U0, while decrease with the increase of .

Key words: optoelectronics, asymmetrical semi-exponential quantum well, linear combination operator; strong-coupling polaron, vibrational frequency, ground state energy

CLC Number:

O469

ZHANG Jianfang, XIAO Jinglin∗. Vibrational frequency of strong-coupling polaron in asymmetrical semi-exponential quantum well[J]. Chinese Journal of Quantum Electronics, 2020, 37(6): 699-703.

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Vibrational frequency of strong-coupling polaron in asymmetrical semi-exponential quantum well

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