摘要
采用改进的 Huybrechts线性组合算符和变分方法 ,研究了半导体膜内电子与表面光学声子强耦合、与体纵光学声子弱耦合对极化子性质的影响 ,得到了极化子的有效质量和自陷能随膜厚的变化规律 .对 Cd F2 半导体 。
The influences of the electron interaction with both the weak\|coupling bulk longitudinal optical phonons and the strong\|coupling surface optical phonons on the properties of the polaron in a semiconductor slab are studied by using improved Huybrechts' linear combination operator and variational method.The law of the change of the effective mass and the self\|trapping\|energy of the polaron changing with the thickness of the slab is derived.For CdF\-2 semiconductor,the contributions of different branches phonon\|electron interaction on the effective mass and self\|trapping\|energy of the polaron are calculated.
基金
国家自然科学基金!(批准号 :6973 60 1 0 )
中国科学院激发态物理开放研究实验室科学基金
