量子棒中强耦合磁极化子基态能量的磁场和温度依赖性

Magnetic fields and temperature dependences of ground state energy of magnetopolaron in quantum rod

基于Huybrechts-Lee-Low-Pines变分法,研究量子棒中强耦合磁极化子基态能量的磁场和温度依赖性。结果表明:磁极化子基态能量的绝对值随温度参数的增加而增大,随电子-声子耦合强度的增加而增大,随磁场的回旋频率的增加而减小,随量子棒受限强度的增加而减小;磁极化子的基态能量随量子棒纵横比的变化规律呈'√'型曲线,并受到温度的显著影响。

Magnetic fields and temperature dependences of the ground state energy of the magnetopolaron in a quantum rod were studied based on Huybrechts-Lee-Low Pines variational method.The results show that the absolute value of the ground state energy of the magnetopolaron increases with the temperature parameter and the strength of the electron-phonon coupling increasing,but decreases with the cyclotron frequency of the magnetic fields and the effective confinement strength of the quantum rod increasing.The dependence of the ground state energy of the magnetopolaron on the aspect ratio of the quantum rod shows a √-shaped curve,and is greatly influenced by temperature.