Asymmetry localized modes in an anharmonic sphalerite-structure lattice

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	Asymmetry localized modes in an anharmonic sphalerite-structure lattice
	G. H. Zhou; Q. L. Xia; L. X. Pan; J. R. Yan
	2000
发表期刊	Chinese Physics Letters
ISSN	0256-307X
卷号	17 期号:12 页码:899-901
摘要	We numerically study the intrinsic localized vibrational modes in a diatomic chain with different masses and alternating force constants between nearest neighbors. This model simulates a row of atoms in the [111] direction of sphalerite-structure crystal. We found that the harmonic and quartic anharmonic terms in the nearest-neighbor interaction potential produce the intrinsic localized modes with frequencies above the optical branch or in the gap of the linear spectrum, the distribution patterns of atom amplitudes are asymmetry with a form of quasi-even or quasi-odd-parity, and the inclusion of cubic term in the potential lowers the frequencies of the modes and introduces static displacements for the atoms.
部门归属	hunan normal univ, dept phys, changsha 410081, peoples r china. yiyang teachers coll, dept phys, yiyang 413049, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;zhou, gh (reprint author), hunan normal univ, dept phys, changsha 410081, peoples r china
关键词	Gaas/alas Superlattice Electrons
URL	查看原文
WOS记录号	WOS:000166882100015
引用统计	被引频次：5[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/321006/37292
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,L. X. Pan,et al. Asymmetry localized modes in an anharmonic sphalerite-structure lattice[J]. Chinese Physics Letters,2000,17(12):899-901.
APA	G. H. Zhou,Q. L. Xia,L. X. Pan,&J. R. Yan.(2000).Asymmetry localized modes in an anharmonic sphalerite-structure lattice.Chinese Physics Letters,17(12),899-901.
MLA	G. H. Zhou,et al."Asymmetry localized modes in an anharmonic sphalerite-structure lattice".Chinese Physics Letters 17.12(2000):899-901.