具有在位势的一维双原子链中杂质引起的对称局域模  

The symmetric local vibration mode induced by an impurity atom in a diatomic linear chain with on-site potential

作　　者：吕岿[1] 童国平[2] 毛杰健[1] 

机构地区：[1]江西上饶师范学院物电系,江西上饶334001 [2]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《大学物理》2012年第5期21-23,共3页College Physics

基　　金：江西省自然科学基金项目(2009GZW0026)资助

摘　　要：对具有在位势且含杂质的一维双原子链的晶格振动方程组进行求解,得到了局域振动的解析解,给出了在位势对局域振动影响的基本特征,并简要讨论了对称局域模的存在形式.The lattice vibration equations of a diatomic chain with an impurity atom and on-site potential are solved.The analytic solutions of local vibration are obtained.The basic features of the effect of on-site potential on the local vibration are given,and the existence forms of symmetric localized mode are also discussed.

关 键 词：杂质 在位势 局域模 

分 类 号：O481[理学—固体物理]