自旋对晶体内弱耦合磁极化子性质的影响

Influence of Spin on the Propeties of a Weak Coupling Magnetopolaron in Polar Crystals

摘要:

本文采用线性组合算符和微扰法研究极性晶体中弱耦合磁极化子的性质。在计及电子在反冲效应中发射和吸收不同波矢的声子之间的相互作用时，讨论电子的自旋对极性晶体中弱耦合磁极化子基态能量的影响。结果表明，在不同电子自旋状态下，磁极化子的基态能量Ｅ０随磁场Ｂ的增大而减小；电子自旋能量与Ｅ０之比随Ｂ的增加而增加。

Abstract:

The properties of a weak coupling magnetopolaron in polar crystals are studied by using a linear combination operator and perturbation method.If we consider the interaction between phonons of different wave vectors in the recoil process,the influence of the electron spin on the ground state energy of a weak coupling magnetopolaron in polar crystals is discussed.Numerical calculation,for a GaP crystal,as an example,illustrates that the ground state energy of the magnetopolaron will descrease with increasing magnetic field,whereas the ratio of the spin energy of the electron and the ground state energy of the magnetopolaron will increase with increasing magnetic field at different electron spin states.