Enhanced Stability of Antiferromagnetic Skyrmion during Its Motion by Anisotropic Dzyaloshinskii–Moriya Interaction,Physica Status Solidi-Rapid Research Letters

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Enhanced Stability of Antiferromagnetic Skyrmion during Its Motion by Anisotropic Dzyaloshinskii–Moriya Interaction
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2020-06-08 , DOI: 10.1002/pssr.202000157
Zongpeng Huang ₁ , Zhejunyu Jin ₁ , Xiaomiao Zhang ₁ , Zhipeng Hou ₁ , Deyang Chen ₁ , Zhen Fan ₁ , Min Zeng ₁ , Xubing Lu ₁ , Xingsen Gao ₁ , Minghui Qin ₁

Affiliation

Searching for new methods to enhance the stability of antiferromagnetic (AFM) skyrmion during its motion is an important issue for AFM spintronic devices. Herein, the spin‐polarized current‐induced dynamics of a distorted AFM skyrmion is numerically studied, based on the Landau–Lifshitz–Gilbert simulations of the model with an anisotropic Dzyaloshinskii–Moriya (DM) interaction. It is demonstrated that the DM interaction anisotropy induces the skyrmion deformation, which suppresses the distortion during the motion and enhances the stability of the skyrmion. Moreover, the effect of the DM interaction anisotropy on the skyrmion velocity is investigated in detail, and the simulated results are further explained by Thiele's theory. This work unveils a promising strategy to enhance the stability and the maximum velocity of AFM skyrmion, benefiting future spintronic applications.

中文翻译：

各向异性Dzyaloshinskii–Moriya相互作用增强了反铁磁Skyrmion运动过程中的稳定性

寻找新的方法来增强反铁磁（AFM）天体在运动过程中的稳定性是AFM自旋电子设备的重要问题。在此，基于具有各向异性Dzyaloshinskii-Moriya（DM）相互作用的模型的Landau-Lifshitz-Gilbert模拟，对扭曲的AFM天蝎子的自旋极化电流感应动力学进行了数值研究。结果表明，DM相互作用的各向异性引起了天敌离子的变形，从而抑制了运动过程中的变形并增强了天敌离子的稳定性。此外，还详细研究了DM相互作用各向异性对天体离子速度的影响，并通过Thiele理论进一步解释了模拟结果。这项工作揭示了一种有前途的策略，可以提高AFM天蝎子的稳定性和最大速度，

更新日期：2020-06-08

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