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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Dynamic response for Dzyaloshinskii-Moriya interaction on bubble-like magnetic solitons driven by spin-polarized current
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Dynamic response for Dzyaloshinskii-Moriya interaction on bubble-like magnetic solitons driven by spin-polarized current

机译：自旋极化电流驱动的气泡状磁孤子上Dzyaloshinskii-Moriya相互作用的动态响应

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By using micromagnetic simulations, we studied the dynamic response for different bubblelike magnetic solitons in the [CoPt-CoNi]/Cu/CoNi magnetic multilayer with perpendicular magnetic anisotropy. It is found that a localized spin-polarized current can not only nucleate a dissipative magnetic droplet but also excite the in-plane domain wall (DW) oscillation at the edge of bubble-like magnetic solitons. The dependence of oscillation frequency on current for the dissipative magnetic droplet is hysteretic in the absence of the Dzyaloshinskii-Moriya interactions (DMI). In the presence of DMI, three different bubble-like magnetic solitons are excited: (1) singular magnetic droplet, (2) pseudonormal magnetic droplet, (3) dynamical skyrmion. Meanwhile, the oscillation frequencies of these magnetic solitons have different response as current density varies. These results open up new possibilities for the applications of magnetic soliton-based spin transfer nano-oscillators.
机译：通过使用微磁模拟，我们研究了具有垂直磁各向异性的[CoPt-CoNi] / Cu / CoNi磁性多层中不同气泡状磁孤子的动力响应。发现局部自旋极化电流不仅可以使耗散磁滴成核，而且可以激发气泡状磁孤子边缘的面内畴壁（DW）振荡。在没有Dzyaloshinskii-Moriya相互作用（DMI）的情况下，耗散磁滴的振荡频率对电流的依赖性是滞后的。在DMI的存在下，会激发出三个不同的气泡状磁孤子：（1）奇异磁滴;（2）伪正态磁滴;（3）动态天生子。同时，随着电流密度的变化，这些磁孤子的振荡频率具有不同的响应。这些结果为基于磁孤子的自旋转移纳米振荡器的应用开辟了新的可能性。

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