摘要
有些极性晶体 ,电子与表面光学声子 (SO)耦合强 ,与表面声学声子 (SA)耦合弱。本文采用线性组合算符方法 ,导出了极性晶体中声学形变势表面极化子的振动频率和有效哈密顿量。并对两种极限情况进行了讨论。
There is weak coupling between the electron and SA phonon but strong coupling between the electron and SO phonon for many polar crystals .In this paper,the temperature dependence of the acoustic deformation surface polaron,which is in crystals as above,is studied by using linear-combination-operator method.Two limiting cases are discussed.
基金
内蒙古自然科学基金资助课题
关键词
极性晶体
声学形变势
表面极化子
温度效应
polar crystal
acoustic deformation potential
surface polaron
temperature dependence
