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- Title
Spin mapping of intralayer antiferromagnetism and field-induced spin reorientation in monolayer CrTe<sub>2</sub>.
- Authors
Xian, Jing-Jing; Wang, Cong; Nie, Jin-Hua; Li, Rui; Han, Mengjiao; Lin, Junhao; Zhang, Wen-Hao; Liu, Zhen-Yu; Zhang, Zhi-Mo; Miao, Mao-Peng; Yi, Yangfan; Wu, Shiwei; Chen, Xiaodie; Han, Junbo; Xia, Zhengcai; Ji, Wei; Fu, Ying-Shuang
- Abstract
Intrinsic antiferromagnetism in van der Waals (vdW) monolayer (ML) crystals enriches our understanding of two-dimensional (2D) magnetic orders and presents several advantages over ferromagnetism in spintronic applications. However, studies of 2D intrinsic antiferromagnetism are sparse, owing to the lack of net magnetisation. Here, by combining spin-polarised scanning tunnelling microscopy and first-principles calculations, we investigate the magnetism of vdW ML CrTe2, which has been successfully grown through molecular-beam epitaxy. We observe a stable antiferromagnetic (AFM) order at the atomic scale in the ML crystal, whose bulk is ferromagnetic, and correlate its imaged zigzag spin texture with the atomic lattice structure. The AFM order exhibits an intriguing noncollinear spin reorientation under magnetic fields, consistent with its calculated moderate magnetic anisotropy. The findings of this study demonstrate the intricacy of 2D vdW magnetic materials and pave the way for their in-depth analysis. In two dimensions magnetic order without magnetic anisotropy is forbidden, making 2D magnetic systems a rich playground for interesting physics. Here, Xian et al. fabricate monolayers of CrTe2, and demonstrate antiferromagnetic ordering, with spin reorientation at finite magnetic fields.
- Subjects
NUCLEAR spin; ANTIFERROMAGNETISM; MAGNETIC materials; SCANNING tunneling microscopy; MAGNETIC fields; MAGNETISM
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-021-27834-z