Dynamic interaction between domain walls and nanowire vertices

D. M. Burn; M. Chadha; S. K. Walton; W. R. Branford

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Dynamic interaction between domain walls and nanowire vertices

机译：畴壁和纳米线顶点之间的动态相互作用

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The dynamic behavior of magnetic domain walls incident upon a Y-shaped junction between three nanowires is explored. Details in the micromagnetic structure of the domain wall and the local spin texture at a vertex result in a complex interaction which ultimately determines the propagation direction of the domain wall following the vertex. This interaction has been explored through both magneto-optical Kerr effect experiments and micromagnetic simulations on single-vertex structures. Differences in the micromagnetic structure of incident domain walls in the dynamic regime have a significant influence on the interaction. We observe an oscillatory path selection with increasing domain wall propagation distance preceding the vertex. Our analysis shows that this behavior originates from cyclic reversals of the transverse domain wall chirality due to Walker breakdown processes.

机译：探索了入射在三个纳米线之间的Y形结上的磁畴壁的动力学行为。畴壁的微磁结构的细节和顶点处的局部自旋纹理导致复杂的相互作用，最终决定了畴壁在顶点之后的传播方向。通过磁光克尔效应实验和单顶点结构的微磁模拟，已经探索了这种相互作用。在动态范围内，入射畴壁的微磁结构的差异对相互作用有重要影响。我们观察到振荡路径选择随着顶点之前畴壁传播距离的增加而增加。我们的分析表明，这种行为起源于由于Walker分解过程而引起的横向畴壁手性的周期性逆转。

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来源
《Physical review》 |2014年第14期|144414.1-144414.6|共6页
作者
D. M. Burn; M. Chadha; S. K. Walton; W. R. Branford;
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作者单位

Department of Physics, Prince Consort Road, Imperial College London, London SW7 2BZ, United Kingdom;

Department of Physics, Prince Consort Road, Imperial College London, London SW7 2BZ, United Kingdom;

Department of Physics, Prince Consort Road, Imperial College London, London SW7 2BZ, United Kingdom;

Department of Physics, Prince Consort Road, Imperial College London, London SW7 2BZ, United Kingdom;

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正文语种 eng
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domain walls and domain structure;

机译：畴壁和畴结构;

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2. Vortex domain wall chirality rectification due to the interaction with end domain spin structures in permalloy nanowires [J] . E.-S. Wilhelm, D. McGrouther, L. Heyne, Applied Physicsletters . 2009,第25期

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5. Magnetic domain wall dynamics in patterned nanowires. [D] . Galkiewicz, Andrew Taylor. 2015

机译：图案化纳米线中的磁畴壁动力学。
6. Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires [O] . J. Brandão, S. Azzawi, A. T. Hindmarch, -1

机译：了解阻尼和Dzyaloshinskii-Moriya相互作用对铂-铁磁体纳米线中动态畴壁行为的作用
7. Dynamic interaction between domain walls and nanowire vertices [O] . Burn DM, Chadha M, Walton SK, 2014

机译：畴壁和纳米线顶点之间的动态相互作用

Dynamic interaction between domain walls and nanowire vertices

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