Field-selected seven-site topological magnons in a classical frustrated triangular-lattice K-$\hat{I}“$-$\hat{I}{“}^{\prime }$ magnet

Bin Xi, Jie Lu, Shun-Li Yu +1

Defining magnon topology in strongly frustrated magnets is often hindered by the absence of a simple harmonic magnon vacuum at zero field. Within a classical-spin ground-state sear…