Direct Optical Probe of Magnon Topology in Two-Dimensional Quantum Magnets
Rubio, S. V. Kusminskiy, and M. A. Sentef Phys. Rev. Lett. 130 , 026701 (2023) Controlling edge states of topological magnon insulators is a promising route to stable spintronics devices. However, to [...] derive a fundamental relation between the light-matter coupling and the quantum geometry of magnon states. This allows us to establish the two-magnon Raman circular dichroism as an optical probe of magnon