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arXiv · 2312.00423

Unravelling spontaneous Bloch-type skyrmion in centrosymmetric two-dimensional magnets

Jingman Pang·Xiaohang Niu·Hong Jian Zhao·Yun Zhang·Laurent Bellaiche
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Abstract

The realization of magnetic skyrmions in two-dimensional (2D) magnets holds great promise for both fundamental research and device applications. Despite recent progress, two-dimensional skyrmion hosts are still limited, due to the fact that most 2D magnets are centrosymmetric and thus lack Dzyaloshinskii-Moriya interaction (DMI). We show here, using a general analysis based on symmetry, that Bloch-type skyrmions can, in fact, be stabilized in 2D magnets, due to the interplay between in-plane component (dx) of second nearest-neighbor DMI and magnetic anisotropy. Its validity is demonstrated in the Cr2Ge2Te6 monolayer, which is also verified by recent experiments. Our work gives a clear direction for experimental studies of 2D magnetic materials to stabilize skyrmions and should greatly enrich the research on magnetic skyrmions in 2D lattices.

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Jingman Pang, Xiaohang Niu, Hong Jian Zhao, Yun Zhang, Laurent Bellaiche. 2023-12-01. Unravelling spontaneous Bloch-type skyrmion in centrosymmetric two-dimensional magnets. https://arxiv.org/abs/2312.00423

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