非对称高斯势量子阱磁极化子的平均声子数

Mean Phonon Numbers of Magnetic Polaron in the Asymmetrical Gaussian Quantum Well

运用幺正变换和线性组合算符方法,研究了非对称的高斯势量子阱中强耦合磁极化子的平均声子数.导出了强耦合极化子平均声子数随磁场的回旋频率和非对称高斯量子阱受限势的范围的变化关系.选择Rb Cl晶体进行数值计算,结果表明:声子平均数随磁场的回旋频率的增加而增大,随非对称高斯量子阱受限势的范围增大而减小.

The linear combination operator and the unitary transformation methods were adopted to study the mean phonon number of strong-coupling polaron in the asymmetrical Gaussian quantum well. It was found that the mean phonon number of polaron changes with the cyclotron frequency and the range of the confinement potential. Based on the calculation of the Rb Cl crystal, the results show that the mean phonon number increases with increasing of the cyclotron frequency, and decreases with increase of the range of the confinement potential.