Researchers find unexpected excitations in a kagome layered material

Researchers from the U.S. Department of Energy Ames National Laboratory have discovered an unexpected chiral excitation in the kagome layered topological magnet TbMn6Sn6. This chiral excitation can be viewed as a localized magnetic swirl or vortex. The team also confirmed the existence of localized flat band magnons, a novel excitation associated with frustrated kagome lattice geometry.