Interaction of solitons with defects and inhomogeneities in crystals

被引：0
|
作者：
Stoychev, K. T. [1 ]
Primatarowa, M. T. [1 ]
Kamburova, R. S. [1 ]
机构：
[1] Bulgarian Acad Sci, Georgi Nadjakov Inst Solid State Phys, BU-1784 Sofia, Bulgaria
来源：
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2009年 / 11卷 / 09期
关键词：
Anharmonic intramolecular vibrations; Substitutional defects; Soliton-defect interaction; NONLINEAR SCHRODINGER-EQUATION; LOCALIZED MODES; OPTICAL-FIBERS; IMPURITIES;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The interaction of solitons with extended inhomogeneities in molecular chains is investigated Linear and nonlinear on-site defects as well as inter-site (bond) defects are considered. A perturbed nonlinear Schrodinger equation is derived which involves three wavenumber (velocity) dependant terms associated with the bond defect. The scattering of solitons from defect segments is studied numerically Periodic scattering patterns as a function of the length of the segment are obtained The periods and their origin are different for weakly and strongly nonlinear solitons The scattering of solitons from potential steps in the presence of transition layers is also studied
引用
收藏
页码：1128 / 1134
页数：7
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