We report an exceptionally large anomalous Hall effect in an antiferromagnetic, intercalated layered dichal-cogenide, reflecting topological characteristics arising either from Weyl nodes or magnetic textures.
Significance and Impact
Our work reveals a field-induced signature of the topological state—either electronic or magnetic—and offers a new, highly flexible materials platform upon which to build topological electronic states.
- Noncentrosymmetric, antiferromagnetic CoNb3S6 exhibits a large anomalous Hall effect (AHE) in a narrow temperature window below the Néel transition.
- A Weyl node is found within a few meV of the calculated Fermi level, pointing to a field-driven band structure response as a potential origin of the AHE.
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