Localized modes in a one-dimensional sphalerite-structure lattice with anharmonicity

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	Localized modes in a one-dimensional sphalerite-structure lattice with anharmonicity
	G. H. Zhou; Q. L. Xia; J. R. Yan
	2001
发表期刊	European Physical Journal B
ISSN	1434-6028
卷号	24 期号:3 页码:297-304
摘要	The nonlinear localized vibrational modes of a one-dimensional atomic chain with two periodically alternating masses and force constants are analytically investigated using a discrete multiple-scale expansion method. This model simulates a row of atoms in the <1 1 1>-direction of sphalerite, or zinc blende, crystals. Owing to the structural asymmetry; the vibrational amplitude is governed by a perturbed nonlinear Schrodinger equation instead of the standard one found in one-dimensional lattices with two alternating masses but uniform force constant. Although the stationary localized modes with carrier wavevector at the Brillouin-zone boundary are similar to those of ionic lattices, the moving localized modes with wavevectors within the zone are different owing to the perturbation. The calculation shows that the height of the moving localized modes in this lattice dampens with time.
部门归属	china ctr adv sci & technol, world lab, beijing 100080, peoples r china. hunan normal univ, dept phys, changsha 410081, peoples r china. hunan normal univ, inst nonlinear phys, changsha 410081, peoples r china. china ctr s univ, dept appl phys, changsha 410083, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;zhou, gh (reprint author), china ctr adv sci & technol, world lab, pob 8730, beijing 100080, peoples r china
关键词	Nonlinear Lattice Diatomic Chain Solitons Temperature Envelope
URL	查看原文
WOS记录号	WOS:000173515300003
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36954
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. H. Zhou,Q. L. Xia,J. R. Yan. Localized modes in a one-dimensional sphalerite-structure lattice with anharmonicity[J]. European Physical Journal B,2001,24(3):297-304.
APA	G. H. Zhou,Q. L. Xia,&J. R. Yan.(2001).Localized modes in a one-dimensional sphalerite-structure lattice with anharmonicity.European Physical Journal B,24(3),297-304.
MLA	G. H. Zhou,et al."Localized modes in a one-dimensional sphalerite-structure lattice with anharmonicity".European Physical Journal B 24.3(2001):297-304.