Impurity-induced local modes in one-dimensional dusty plasma chains

被引：4
作者：
Ren Yong-Chao [1 ]
Wang Xin-Shang [1 ]
Wang Xiao-Gang [1 ]
机构：
[1] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS B | 2012年 / 21卷 / 11期
基金：
中国国家自然科学基金;
关键词：
impurity; local mode; dusty plasma; LATTICE WAVES; TRANSVERSE-WAVES; CRYSTALS; POLARIZATION;
D O I：
10.1088/1674-1056/21/11/115201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effects of impurity on eigenmodes in one-dimensional dusty plasma lattices are studied. It is found that local modes can be excited besides lattice waves, due to the existence of an impurity particle. The dispersion relations of the modes are derived accordingly. Properties of the lattice and local modes are also analyzed and discussed, particularly for their symmetric features and conditions of the mode excitation.
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页数：6
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