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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
The local vibration mode induced by an impurity in a diatomic linear chain with on-site potential and the secondary neighbor interactions
【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.
【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 is solved,and the basic feature of the effect of on-site potential and the secondary neighbor interaction on the symmetric local vibration are discussed.
【关键词】 杂质;
次近邻作用;
在位势;
局域模;
【Key words】 impurity; secondary neighbor interactions; on-site potential; local vibration;
【Key words】 impurity; secondary neighbor interactions; on-site potential; local vibration;
【基金】 国家自然科学基金(11465015)资助
- 【文献出处】 大学物理 ,College Physics , 编辑部邮箱 ,2017年11期
- 【分类号】O562
- 【下载频次】71