4.8 Article

Dirac cone, flat band and saddle point in kagome magnet YMn6Sn6

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Summary: Geometric frustration in the kagome lattice provides a great platform for flat electronic bands, nontrivial topological properties, and novel magnetism. The study shows the occurrence of topological Hall effect in centrosymmetric YMn6Sn6, which is attributed to an in-plane field-induced double-fan spin structure rather than a magnetic skyrmion lattice. This research offers insights into the impact of field-induced unique magnetic structures on magnetoelectric response in topological kagome metals.

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