Collision of electromagnetic solitons in a weak ferromagnetic medium

被引：19

作者：

Kavitha, L. ^{[1
,2
,4
]}

Saravanan, M. ^{[1
]}

Senthilkumar, V. ^{[1
]}

Ravichandran, R. ^{[1
]}

Gopi, D. ^{[3
,4
]}

机构：

[1] Periyar Univ, Dept Phys, Salem 636011, Tamil Nadu, India

[2] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy

[3] Periyar Univ, Dept Chem, Salem 636011, Tamil Nadu, India

[4] Periyar Univ, Ctr Nanosci & Nanotechnol, Salem 636011, Tamil Nadu, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 355卷

关键词：

Electromagnetic soliton; Perturbed derivative nonlinear Schrodinger equation; Tangent-hyperbolic function method; Dzyaloshinkii-Moriya interaction; Soliton collision; Reductive perturbation method; HEISENBERG SPIN CHAIN; EXCHANGE INTERACTION; PROPAGATION; WAVES; RESONANCE; GLASS; MULTIFERROICS; EQUATIONS; MODEL; PULSE;

D O I：

10.1016/j.jmmm.2013.11.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the propagation dynamics of electromagnetic soliton in a weak ferromagnet with Dzyaloshinskii-Moriya interaction and uniaxial anisotropy along the propagation of electromagnetic (EM) wave. We perform the analysis in the framework of Landau-Lifshitz (LL) equation governing the spin evolution in ferromagnet and Maxwell (M) equations representing the electromagnetic wave propagation. We invoke the reductive perturbation method, and a nonuniform expansion is carried out on the coupled LLM equations which is reduced to a perturbed derivative nonlinear Schrodinger (pDNLS) equation for a new complex field that govern the spin excitations under the influence of EM wave. The pDNLS equation is systematically solved through the tangent-hyperbolic method and a class of soliton solutions are constructed. Further, the collision of EM wave soliton and the influence of Dzyaloshinkii-Moriya interaction is established via Hirota bilinerization method. (C) 2013 Elsevier B.V. All rights reserved

引用

页码：37 / 50

页数：14

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