大学物理 ›› 2017, Vol. 36 ›› Issue (11): 15-17.doi: 10.16854 /j.cnki.1000-0712.2017.11.004

• 教学研究 • 上一篇    下一篇

次近邻近似下具有在位势的一维双原子链中杂质引起的局域振动

吕岿1,童国平2   

  1. 1 江西上饶师范学院物电学院,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
  • 收稿日期:2017-04-11 修回日期:2017-06-10 出版日期:2017-11-20 发布日期:2017-11-24
  • 作者简介:吕岿( 1970—) ,男,江西横峰人,硕士,上饶师院副教授,主要从事固体物理学教学与研究工作.
  • 基金资助:
    国家自然科学基金( 11465015) 资助

The local vibration mode induced by an impurity in a diatomic linear chain with on-site potential and the Secondary neighbor interactions

LV Kui1,TONG Guo-ping2   

  1. 1. Department of Physics,Shangrao Normal University,Shangrao, Jiangxi 334001,China; 2. College of Mathematics; Physics and Information Engineering,Zhejiang Normal University,Jinhua,Zhejiang 321004,China
  • Received:2017-04-11 Revised:2017-06-10 Online:2017-11-20 Published:2017-11-24

摘要: 考虑原子间次近邻相互作用,讨论了具有在位势的一维双原子链中杂质引起的局域振动,得到次近邻互作用力、在位势共同作用下局域模的存在条件及振动的基本特征.

关键词: 杂质, 次近邻作用, 在位势, 局域模

Abstract: Considering the Secondary neighbor interactions between the atoms in a diatomic linear chain with on-site potential, the lattice vibration equation of the diatomic chain with an impurity are solved, and the basic feature of the effect of on-site potential and the Secondary neighbor interaction on the symmetric local vibration are given.

Key words: impurity, Secondary neighbor interactions, on-site potential, local vibration