Hidden magnetism uncovered in a charge ordered bilayer kagome material ScV<sub>6</sub>Sn<sub>6</sub>.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38016982.
- Also identified by DOI 10.1038/s41467-023-43503-9 and PMC identifier 10684576.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Charge ordered kagome lattices have been demonstrated to be intriguing platforms for studying the intertwining of topology, correlation, and magnetism. The recently discovered charge ordered kagome material ScV<sub>6</sub>Sn<sub>6</sub> does not feature a magnetic groundstate or excitations, thus it is often regarded as a conventional paramagnet. Here, using advanced muon-spin rotation spectroscopy, we uncover an unexpected hidden magnetism of the charge order. We observe an enhancement of the internal field width sensed by the muon ensemble, which takes place within the charge ordered state. More importantly, the muon spin relaxation rate below the charge ordering temperature is substantially enhanced by applying an external magnetic field. Taken together with the hidden magnetism found in AV<sub>3</sub>Sb<sub>5</sub> (A = K, Rb, Cs) and FeGe kagome systems, our results suggest ubiqitous time-reversal symmetry-breaking in charge ordered kagome lattices.