arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0704.0024nlin.PS
收藏

横向受限铁磁薄膜介质中准孤子的形成

Formation of quasi-solitons in transverse confined ferromagnetic film media

A. A. Serga, M. Kostylev, B. Hillebrands

摘要:

利用时间分辨和空间分辨布里渊光散射技术,观察到亚铁磁薄膜纵向磁化条纹中准二维自旋波波形的形成。在线性制度,它被发现,限制降低了附近的横向条纹边缘的动态磁化的幅度。因此,所谓的动态磁化的有效偶极钉扎发生在边缘处。在非线性区,观察到一种新的稳定的自旋波包沿波导结构传播,横向不稳定性和与波导侧壁的相互作用都是重要的。脉冲演化的实验和数值模拟表明,所形成的波形的形状和它们的行为的强烈影响的约束。

英文摘要:

The formation of quasi-2D spin-wave waveforms in longitudinally magnetized stripes of ferrimagnetic film was observed by using time- and space-resolved Brillouin light scattering technique. In the linear regime it was found that the confinement decreases the amplitude of dynamic magnetization near the lateral stripe edges. Thus, the so-called effective dipolar pinning of dynamic magnetization takes place at the edges. In the nonlinear regime a new stable spin wave packet propagating along a waveguide structure, for which both transversal instability and interaction with the side walls of the waveguide are important was observed. The experiments and a numerical simulation of the pulse evolution show that the shape of the formed waveforms and their behavior are strongly influenced by the confinement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑