Imaging of DomainWall Inertia in Permalloy Half-Ring Nanowires by Time-Resolved Photoemission Electron Microscopy
Imaging of DomainWall Inertia in Permalloy Half-Ring Nanowires by Time-Resolved Photoemission Electron Microscopy
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DOI：
10.1103/physrevlett.104.067201
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发表时间：
2010-02-12
影响因子：
8.6
通讯作者：
Klaeui, M.
中科院分区：
文献类型：
--
作者：
Rhensius, J.;Heyne, L.;Klaeui, M.
利用光电子发射电子显微镜，我们的图像动态的场脉冲激发畴壁坡莫合金纳米线。我们发现，相对于激发，畴壁运动的开始存在延迟，并且畴壁振荡弛豫回到由外部磁场定义的平衡位置。这两种惯性效应的起源都是能量库之间的能量转移。通过成像的壁自旋结构中的交换能的分布，我们确定这些水库，这是畴壁质量的概念的基础。
Using photoemission electron microscopy, we image the dynamics of a field pulse excited domain wall in a Permalloy nanowire. We find a delay in the onset of the wall motion with respect to the excitation and an oscillatory relaxation of the domain wall back to its equilibrium position, defined by an external magnetic field. The origin of both of these inertia effects is the transfer of energy between energy reservoirs. By imaging the distribution of the exchange energy in the wall spin structure, we determine these reservoirs, which are the basis of the domain wall mass concept.