Room-temperature creation and manipulation of skyrmions in MgO/FeNiB/Mo multilayers

doi:10.1088/1674-1056/acf5d4

Abstract Magnetic skyrmions in multilayer structures are considered as a new direction for the next generation of storage due to their small size, strong anti-interference ability, high current-driven mobility, and compatibility with existing spintronic technology. In this work, we present a tunable room temperature skyrmion platform based on multilayer stacks of MgO/FeNiB/Mo. We systematically studied the creation of magnetic skyrmions in MgO/FeNiB/Mo multilayer structures with perpendicular magnetic anisotropy (PMA). In these structures, the magnetic anisotropy changes from PMA to in-plane magnetic anisotropy (IMA) as the thickness of FeNiB layer increases. By adjusting the applied magnetic field and electric current, stable and high-density skyrmions can be obtained in the material system. The discovery of this material broadens the exploration of new materials for skyrmion and promotes the development of spintronic devices based on skyrmions.

Keywords: magnetic skyrmion MgO/FeNiB/Mo multilayers electromagnetic coordinated manipulation Lorentz transmission electron microscopy (LTEM)

Received: 10 July 2023
Revised: 30 August 2023
Accepted manuscript online: 01 September 2023

PACS:	75.70.Kw	(Domain structure (including magnetic bubbles and vortices))
	75.30.Gw	(Magnetic anisotropy)
	75.60.-d	(Domain effects, magnetization curves, and hysteresis)

Fund: Project supported by the National Basic Research Program of China (Grant No.2015CB921403), the National Key Research and Development Program of China (Grant No.2016YFA0300804), and the National Natural Science Foundation of China (Grant Nos.51871236, 11874408, 51431009, 92263202, and 51971240), the Science Center of the National Science Foundation of China (Grant No.52088101), and the Strategic Priority Research Program (B, Grant No.XDB33030200) of the Chinese Academy of Sciences (CAS).

Corresponding Authors: Feng-Xia Hu, Jian-Wang Cai
E-mail: fxhu@iphy.ac.cn;jwcai@iphy.ac.cn

Cite this article:

Wen-Hui Liang(梁文会), Jian Su(苏鉴), Yu-Tong Wang(王雨桐), Ying Zhang(张颖), Feng-Xia Hu(胡凤霞), and Jian-Wang Cai(蔡建旺) Room-temperature creation and manipulation of skyrmions in MgO/FeNiB/Mo multilayers 2023 Chin. Phys. B 32 127504

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Room-temperature creation and manipulation of skyrmions in MgO/FeNiB/Mo multilayers

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