Magnon analog of topological-insulator: bosonic excitations with non-trivial Berry curvature; observed in honeycomb-lattice ferromagnets (Cu(1,3-bdc), Tb-MnO3); exhibit thermal-Hall effect from edge-mode propagation.
Magnon analog of topological-insulator: bosonic excitations with non-trivial Berry curvature; observed in honeycomb-lattice ferromagnets (Cu(1,3-bdc), Tb-MnO3); exhibit thermal-Hall effect from edge-mode propagation.