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Synthesis and Polymorph Manipulation of FeSe ₂ Monolayers

https://doi.org/10.1021/acs.nanolett.4c01286

He, Zehao; Poudel, Shiva Prasad; Stolz, Samuel; Wang, Tianye; Rossi, Antonio; Wang, Feng; Mo, Sung-Kwan; Weber-Bargioni, Alexander; Qiu, Zi Qiang; Barraza-Lopez, Salvador; et al (July 2024, Nano Letters)

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Imaging tunable Luttinger liquid systems in van der Waals heterostructures

https://doi.org/10.1038/s41586-024-07596-6

Li, Hongyuan; Xiang, Ziyu; Wang, Tianle; Naik, Mit H; Kim, Woochang; Nie, Jiahui; Li, Shiyu; Ge, Zhehao; He, Zehao; Ou, Yunbo; et al (July 2024, Nature)

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Spin disorder control of topological spin texture

https://doi.org/10.1038/s41467-024-47715-5

Zhang, Hongrui; Shao, Yu-Tsun; Chen, Xiang; Zhang, Binhua; Wang, Tianye; Meng, Fanhao; Xu, Kun; Meisenheimer, Peter; Chen, Xianzhe; Huang, Xiaoxi; et al (December 2024, Nature Communications)

Abstract Stabilization of topological spin textures in layered magnets has the potential to drive the development of advanced low-dimensional spintronics devices. However, achieving reliable and flexible manipulation of the topological spin textures beyond skyrmion in a two-dimensional magnet system remains challenging. Here, we demonstrate the introduction of magnetic iron atoms between the van der Waals gap of a layered magnet, Fe₃GaTe₂, to modify local anisotropic magnetic interactions. Consequently, we present direct observations of the order-disorder skyrmion lattices transition. In addition, non-trivial topological solitons, such as skyrmioniums and skyrmion bags, are realized at room temperature. Our work highlights the influence of random spin control of non-trivial topological spin textures.
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