Thickness- and Field-Dependent Magnetic Domain Evolution in van der Waals Fe3GaTe2

Shuaizhao Jin, Yiting Wang, Haotian Zheng, Shouzhe Dong, Kun Han, Zhan Wang, Guangcheng Wang, Xingang Jiang, Xiaolei Wang, Jiawang Hong, Houbing Huang, Ying Zhang, Tian Long Xia, Xueyun Wang*

*此作品的通讯作者

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摘要

The discovery of room-temperature ferromagnetism in van der Waals (vdW) materials opens new avenues for exploring low-dimensional magnetism and its applications in spintronics. Recently, the observation of the room-temperature topological Hall effect in the vdW ferromagnet Fe3GaTe2 suggests the possible existence of room-temperature skyrmions, yet skyrmions have not been directly observed. In this study, real-space imaging was employed to investigate the domain evolution of the labyrinth and skyrmion structure. First, Néel-type skyrmions can be created at room temperature. In addition, the influence of flake thickness and external magnetic field (during field cooling) on both labyrinth domains and the skyrmion lattice is unveiled. Due to the competition between magnetic anisotropy and dipole interactions, the specimen thickness significantly influences the density of skyrmions. These findings demonstrate that Fe3GaTe2 can host room-temperature skyrmions of various sizes, opening up avenues for further study of magnetic topological textures at room temperature.

源语言英语
期刊Nano Letters
DOI
出版状态已接受/待刊 - 2024

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Jin, S., Wang, Y., Zheng, H., Dong, S., Han, K., Wang, Z., Wang, G., Jiang, X., Wang, X., Hong, J., Huang, H., Zhang, Y., Xia, T. L., & Wang, X. (已接受/印刷中). Thickness- and Field-Dependent Magnetic Domain Evolution in van der Waals Fe3GaTe2. Nano Letters. https://doi.org/10.1021/acs.nanolett.4c00496