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arXiv · 2504.19045

Skyrmion Bubbles by Design in a Centrosymmetric Kagome Magnet

Mohamed El Gazzah·Fehmi Sami Yasin·Sk Jamaluddin·Hari Bhandari·Resham Babu Regmi·Xiuzhen Yu·Nirmal J. Ghimire
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Abstract

Topologically protected nanoscale spin textures, such as magnetic skyrmions, have attracted significant interest for spintronics applications. While skyrmions in noncentrosymmetric materials are known to be stabilized by Dzyaloshinskii$-$Moriya interaction (DMI), their deliberate design in centrosymmetric materials remains a challenge. This difficulty largely stems from the complexity of controlling magnetocrystalline anisotropy $-$ a critical factor in the absence of DMI. Here, we demonstrate the chemical tuning of magnetocrystalline anisotropy in the centrosymmetric Kagome magnet TmMn$_6$Sn$_6$. The resulting compound exhibits a spin reorientation transition accompanied by an emergent skyrmion bubble lattice, confirmed by Lorentz transmission electron microscopy. Our findings overcome a key materials design challenge and open possibilities for deliberate design of skyrmionic textures in centrosymmetric systems.

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Mohamed El Gazzah, Fehmi Sami Yasin, Sk Jamaluddin, Hari Bhandari, Resham Babu Regmi, Xiuzhen Yu, Nirmal J. Ghimire. 2025-04-26. Skyrmion Bubbles by Design in a Centrosymmetric Kagome Magnet. https://arxiv.org/abs/2504.19045

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