Topological magnon bands in magnetic skyrmion lattices offer robust, unidirectional edge transport, crucial for advancing magnonic circuits and quantum transport studies. Here, Brillouin light scattering microscopy is used to detect intermediate wavelength magnons in Cu2OSeO3, revealing multipole excitation modes with inactive dipole character, including a novel quadrupole mode and, possibly, a sextupole mode, enhancing GHz frequency magnonic device design.
- Ping Che
- Riccardo Ciola
- Dirk Grundler