Influence of temperature on ground state energy of bound polaron in asymmetric Gaussian potential quantum well in presence of electromagnetic field This work is supported by the National Natural Science Foundation of China under Grant No. 11975011

• Published in: Communications in theoretical physics Vol. 72; no. 11
• Main Authors: Chen, Ying-Jie, Yan, Ze-Chen, Zhang, Kai-Yue, Shao, Feng-Lan
• Format: Journal Article
• Language: English
• Published: IOP Publishing 15.10.2020
• Subjects: asymmetrical Gaussian potential quantum well; bound polaron; ground state energy; temperature
• ISSN: 0253-6102; 1572-9494
• DOI: 10.1088/1572-9494/aba255

By a combination method of Lee-Low-Pines unitary transformation method and Pekar-type variational method, the ground state energy (GSE) of the bound polaron is studied in the asymmetrical Gaussian potential quantum well considering the temperature and electromagnetic field. The impacts of the temperature and asymmetrical Gaussian potential, electromagnetic field and phonon-electron coupling upon the GSE are obtained. The results show that the GSE of the bound polaron not only oscillates as the temperature changes regardless of the electromagnetic field and asymmetrical Gaussian potential and Coulomb impurity potential (CIP) and electron-phonon coupling but also has different rules with the electromagnetic field and asymmetrical Gaussian potential and CIP and electron-phonon coupling at different temperature zones.