声学形变势表面极化子的温度效应

摘要

The temperature characteristic of the acoustic deformation potential surface polaron in polar crystal, which has a weak couplin g with surface phonons and a strong coupling with surface optical phonons was st udied by using linear-combination-operator method.Numerical calculation for KI crystal as an example, illustrated that the vibration frequency λ and effe ctive mass m*2 of the acoustic deformation potential surface polaron de crease with increasing temperature, but the induced potential Vai of the acoustic deformation potential surface polaron will increase with increasing te mperature.%采用线性组合算符方法,研究与表面光学声子耦合强、 与表面声学声子耦合弱的声学形变势表面极化子的温度效应.对KI晶体的数值计算结果表明 : 振动频率、有效质量随温度的升高而减少,而诱生势随温度的升高而增大.