摘要
针对应变层超晶格界面处晶格畸变的特征，提出用位错网络模型模拟界面处的畸变，根据弹性理论，应用Volterra点方法，导出了界面畸变在社底区（Si）中，所引起的弹性场。
In is Well known, the lattice distortion will occur at the interface of superlattice because of the lattice mismatch. A dislocation network model for simulating the strain mode at the interface is suggested. According to elastic theory, the expressions of the elastic displacement and strain field induced by the dislocation networks are deducede by using a volterra point force method.
关键词
应变层超晶格
锗
硅
能带结构
弹性场
超晶格
volterra point force method
strainded-layer superlatlice
dislocation network model
