Néel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer

Baoshan Cui, Dongxing Yu, Ziji Shao, Yizhou Liu, Hao Wu, Pengfei Nan, Zengtai Zhu, Chuangwen Wu, Tengyu Guo, Peng Chen, Heng An Zhou, Li Xi, Wanjun Jiang, Hao Wang, Shiheng Liang, Haifeng Du, Kang L. Wang, Wenhong Wang, Kehui Wu, Xiufeng HanGuangyu Zhang, Hongxin Yang, Guoqiang Yu

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)


Magnetic skyrmions, topological-chiral spin textures, have potential applications in next-generation high-density and energy-efficient spintronic devices for information storage and logic technologies. Tailoring the detailed spin textures of skyrmions is of pivotal importance for tuning skyrmion dynamics, which is one of the key factors for the design of skyrmionic devices. Here, the direct observation of parallel aligned elliptical magnetic skyrmions in Pt/Co/Ta multilayers with an oblique-angle deposited Co layer is reported. Domain wall velocity and spin–orbit-torque-induced out-of-plane effective field analysis demonstrate that the formation of unusual elliptical skyrmions is correlated to the anisotropic effective perpendicular magnetic anisotropy energy density (Keffu) and Dzyaloshinskii–Moriya interaction (DMI) in the film plane. Structural analysis and first-principles calculations further show that the anisotropic Keffu and DMI originate from the interfacial anisotropic strain introduced by the oblique-angle deposition. The work provides a method to tune the spin textures of skyrmions in magnetic multilayers and, thereby, a new degree of freedom for the design of skyrmionic devices.

期刊Advanced Materials
出版狀態Published - 2021 3月 25

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 材料力學
  • 機械工業


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