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arXiv 1402.3202cond-mat.mtrl-scicond-mat.mes-hall
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静磁耦合横畴壁的共振

Resonance in Magnetostatically Coupled Transverse Domain Walls

Andrew T. Galkiewicz, Liam O'Brien, Paul S. Keatley, Russell P. Cowburn, Paul A. Crowell

摘要:

我们在一对铁磁纳米线中观察到了耦合横畴壁的本征模。虽然对耦合静磁,其频谱是由钉扎的边缘粗糙度和偶极耦合的两个壁的组合。由于相应的能量尺度是可比的,耦合只能在最小的线间距观察到。耦合壁动力学模型再现实验定量,允许与估计的钉扎和畴壁耦合能量的比较。这些结果对基于耦合畴壁的器件的动力学特性具有重要意义。

英文摘要:

We have observed the eigenmodes of coupled transverse domain walls in a pair of ferromagnetic nanowires. Although the pair is coupled magnetostatically, its spectrum is determined by a combination of pinning by edge roughness and dipolar coupling of the two walls. Because the corresponding energy scales are comparable, the coupling can be observed only at the smallest wire separations. A model of the coupled wall dynamics reproduces the experiment quantitatively, allowing for comparisons with the estimated pinning and domain wall coupling energies. The results have significant implications for the dynamics of devices based on coupled domain walls.

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。

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