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MAGNETIC SOLITONS: On the problem of generation

机译:磁性孤子:关于代的问题

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It is known that there is strong association between the basic equation of nonlinear optics, the nonlinear Schroedinger equation (NSE), and the fandamental equation of magnetodynamics, the Landau-Lifshitz equation (LLE), that, in the case of isotropic and uniaxially anisotropic medium, just takes the form of equivalence. This gives grounds to expect close similarity between nonlinear soliton phenomena in optics and magnetism. The traditional objects of study in magnetodynam cs are so-called domain walls (DWs) (narrow, moving or standing, transition regions in magnets separating the regions of different uniform magnetization) and small-amplitude oscillating soliton-like packets of magnetostatic waves (MSW), which are clearly observable and reliably reproducible in experiments. However, the class of known exact soliton solutions is more wide. It contains the solutions correspondent to DWs as a particular case, so-called topological solitons, and includes the family of localized solutions ("dynamical solitons ). These solitons may be considered as promising information carriers for devices of functional magnetoelectronics, because their maximal velocities are much higher than the velocities of bubble magnetic domains, which were studied intensively earlier. Unfortunately, it should be noted that there are no fool-proof physical experiments in observation and generation of them. The aim of our work was to find physically-realistic initial distribution of magnetization, which can lead to generation of solitons.
机译:已知的是,有非线性光学的基本方程之间的强关联,非线性薛定谔方程(NSE),和magnetodynamics的fandamental方程,的Landau-利弗席兹方程(LLE),即,在各向同性和单轴各向异性的情况下中,只需要对等的形式。这给理由期待在光学和磁非线性孤子现象之间的密切相似。研究在magnetodynam CS传统对象是所谓的磁畴壁(DWS)(缩小,移动或在磁铁分离不同均匀磁化的区域站立,过渡区)和小振幅振荡孤子状静磁波的分组(MSW ),这是清楚地观察和实验可靠地再现的。然而,类称为精确解的是更广泛的。它包含了解决方案通讯员个DW作为一个特定的情况下,所谓的拓扑孤子,包括本地化的解决方案家族(“动态孤子)。这些孤子可认为是有前途的信息载体的功能性磁电子的设备,因为它们的最大速度比泡沫磁畴,这是深入早期研究的速度要高得多。不幸的是,应该注意到,在他们的观察和一代没有防呆物理实验。我们工作的目的是找出物理逼真磁化的初始分布,这可能导致产生孤子。

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