具有在位势的一维单原子链中杂质引起的局域模  

Localized vibration mode induced by impurity atom in monatomic linear chain with on-site potential

作　　者：吕岿[1] 毛杰健[1] 童国平[2] 

机构地区：[1]上饶师范学院物理与电子信息学院,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：《兰州理工大学学报》2014年第3期169-172,共4页Journal of Lanzhou University of Technology

基　　金：江西省自然科学基金(2009GZW0026);江西省教育厅科学技术研究项目(GJJ13707)

摘　　要：讨论具有在位势且含杂质的一维单原子链的局域振动.通过求解晶格振动方程组,分析在位势,杂质质量和杂质近邻力常数等参数共同影响下局域模的产生条件和振动特点,说明模的频移及局域程度与各参数的关系.The localized vibration of one-dimensional monatomic chain with impurity atoms and on-site potential was analyzed. By solving the equation set of lattice vibration, the generation conditions of localized mode and vibration characteristics were more comprehensively analyzed under the joint influence of onside potential, impurity mass, and neighborhood force constants about the impurity, manifesting localized mode frequency shift and localization degree to every parameters.

关 键 词：杂质 在位势 局域模 

分 类 号：O483[理学—固体物理]