Nonlinear excitations in ferromagnetic chains with nearest and next nearest neighbor exchange interactions

被引：26

作者：

Huang, GX ^{[1
]}

Zhang, SD

Hu, BB

机构：

[1] Hong Kong Baptist Univ, Dept Phys, Hong Kong, Peoples R China

[2] Hong Kong Baptist Univ, Ctr Nonlinear Studies, Hong Kong, Peoples R China

[3] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China

[4] Beijing Normal Univ, Inst Low Energy Nucl Phys, Beijing 100875, Peoples R China

[5] Univ Houston, Dept Phys, Houston, TX 77204 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.58.9194

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Weakly nonlinear excitations in one-dimensional isotropic Heisenberg ferromagnetic chains with nearest- and next-nearest-neighbor exchange interactions are considered. Based on the properties of modulational stability of corresponding linear spin waves, the existence regions of bright and dark magnetic solitons of the system are discussed in the whole Brillouin zone. The antidark soliton mode which is convex soliton super-imposed with a plane wave component is obtained near the zero-dispersion points of the spin wave frequency spectrum. The analytical results are checked by numerical simulations. [S0163;1829(98)01838-4].

引用

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页码：9194 / 9206

页数：13

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