The role of electron correlations in the electronic structure of putative Chern magnet TbMn6Sn6

Predictive calculations resolved the energy level of the Chern gap in TbMn₆Sn₆ Kagome metal.

Presence of a Chern gap in TbMn₆Sn₆ can lead to chiral edge-states, enabling dissipationless transport, but uncertainties remained regarding the energetic level of the gap.  We resolved these uncertainties and provided a predictive approach for use in other Kagome compounds.

DOI: 10.1038/s41535-023-00583-6