超晶格分层与断裂的相平面分析  

Phase Plane Analysis for Layer and Fracture in Superlattice

作　　者：陈桂华[1] 邵明珠[1] 罗诗裕[1] 

机构地区：[1]东莞理工大学电子工程学院,广东东莞523106

出　　处：《半导体光电》2011年第5期665-667,共3页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(10947140)

摘　　要：在经典力学框架内和位错线整体运动的假设下,把Seeger方程化为具有固定力矩的摆方程。引入相面积概念描述了位错的能量转移和释放机制,并导出了能量释放系数。分析表明,同宿轨道很难完成能量传递,周期轨道也不能实现大范围内的能量转移。但是,只要适当控制超晶格的生长温度和速度,就可实现系统能量的有效释放。In the classical mechanics frame and under the supposition of the dislocation line motion,the Seeger equation is reduced to be the pendulum equation with the fixing moment.By introducing the phase area concept,the mechanisms of energy transfer and release for the dislocation are descirbed,and the energy releasing coefficient is derived.Analytical results indicate that using the homoclinic orbit is very difficult to complete the energy transfer,and the periodic orbit cannot realize the energy release in a wide range.But it is also proved that suitable control of the growth temperature and speed of the superlattice can realize the release of the system energy effectively.

关 键 词：超晶格 位错 能量释放 相平面 分支线 

分 类 号：O434.1[机械工程—光学工程]