Author(s): R. Chisnell, J. S. Helton, D. E. Freedman, D. K. Singh, R. I. Bewley, D. G. Nocera, and Y. S. Lee
Experimental evidence is presented for a topological magnon insulator, a material where magnetic excitations (magnons) are protected from scattering by the properties of the material.
[Phys. Rev. Lett. 115, 147201] Published Mon Sep 28, 2015