Temperature and Impurity Effects of the Magnetopolaron in an Asymmetric Quantum Dot

Shu-Ping Shan ； Li-Qing Cai ； Ya-Min Liu ； Jing-Lin Xiao

《Chinese Journal of Physics》 52卷2期 (2014/04) Pp. 880-890

https://doi.org/10.6122/CJP.52.880

並列摘要

Using the linear combination operator method, we investigate the properties of the strongcoupling impurity bound magnetopolaron in an asymmetric quantum dot (AQD). The relations between the vibrational frequency, the mean number of phonons, and the ground state binding energy with the temperature, the cyclotron frequency of the magnetic field, the electron-phonon coupling strength, and the Coulomb bound potential are derived. It is found that the mean number of phonons and the ground state binding energy are increasing functions of the temperature, the coupling strength, and the Coulomb bound potential. The vibrational frequency will increase with increasing Coulomb bound potential and coupling strength. The mean number of phonons is a decreasing function of the transverse and the longitudinal effective confinement lengths. The ground state binding energy is a decreasing function of the cyclotron frequency, whereas the vibrational frequency is an increasing function of it.