2021/09/28 by Olle Heinonen, Heinonen, O., R. A. Heinonen +3 · 2 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #FOS: Physical sciences #Iron-based superconductors research #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism
paper · pdf · doi:10.48550/arxiv.2109.13837
openalex publication_date 2021/09/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The transition-metal intercalated dichalcogenide CoNb3S6 is a triangular antiferromagnet that has recently been shown to exhibit a large anomalous Hall effect (AHE) below the Néel temperature, even though the response to an external field is very small. This suggests that there is an interesting magnetic structure that interacts with the electronic structure to yield the AHE, as collinear antiferromagnets cannot exhibit a nonzero AHE. We propose a model for magnetic transition-metal intercalated dichalcogenides and examine its ground state as function of interaction parameters. The model exhibits transitions between planar spin spirals, non-planar spin spirals, and a particular non-coplanar so-called 3q state. This latter state must exhibit a nonzero AHE, while the spin spirals do not.