Electromagnetic waves in ferromagnets: a Davey-Stewartson-type model
Electromagnetic waves in ferromagnets: a Davey-Stewartson-type model
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DOI：
10.1088/0305-4470/32/45/308
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发表时间：
1999-11
期刊：
影响因子：
--
通讯作者：
H. Leblond
中科院分区：
文献类型：
--
作者：
H. Leblond
我们研究了饱和铁磁介质中电磁定域脉冲的非线性调制。可以看出，脉冲形状的演化受Davey-Stewartson(DS)系统的三维推广所支配。根据物理参数(外场和波频)的值，给出了所遇到的DS系统的类型的分类。数值计算显示了脉冲的各种可能的行为。会发生爆炸和扩散，也会发生形状修改。与电磁长波的相互作用甚至可以稳定脉搏，或将其切成几个部分。
We examine the nonlinear modulation of an electromagnetic localized pulse in a saturated bulk ferromagnetic medium. It is seen that the evolution of the pulse shape is governed by a three-dimensional generalization of the Davey-Stewartson (DS) system. A classification of the type of DS system encountered is given, with regard to the value of the physical parameters (external field and wave frequency). Numerical computations show the various possible behaviours of the pulse. Blow-up and spreading out occur, as well as shape modifications. Interaction with electromagnetic long waves can even stabilize the pulse, or cut it into several parts.