Field-induced topological Hall effect and double-fan spin structure with a c -axis component in the metallic kagome antiferromagnetic compound YMn 6 Sn 6

Geometric frustration in the kagome lattice makes it a great host for the flat electronic band, nontrivial topological properties, and novel magnetism. Here, we use magnetotransport measurements to map out the field-temperature phase diagram of the centrosymmetric YMn Sn with a Mn kagome lattice and...

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Published inPhysical review. B Vol. 103; no. 1
Main Authors Wang, Qi, Neubauer, Kelly J, Duan, Chunruo, Yin, Qiangwei, Fujitsu, Satoru, Hosono, Hideo, Ye, Feng, Zhang, Rui, Chi, Songxue, Krycka, Kathryn, Lei, Hechang, Dai, Pengcheng
Format Journal Article
LanguageEnglish
Published United States 01.01.2021
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Summary:Geometric frustration in the kagome lattice makes it a great host for the flat electronic band, nontrivial topological properties, and novel magnetism. Here, we use magnetotransport measurements to map out the field-temperature phase diagram of the centrosymmetric YMn Sn with a Mn kagome lattice and show that the system exhibits the topological Hall effect (THE) with an in-plane applied magnetic field around 240 K. In addition, our neutron diffraction results demonstrate that the observed THE cannot arise from a magnetic skyrmion lattice, but instead from an in-plane field-induced double-fan spin structure with -axis components. This paper provides a platform to understand the influence of a field-induced novel magnetic structure on magnetoelectric response in topological kagome metals.
ISSN:2469-9950