Probing magnon dynamics and interactions in a ferromagnetic spin-1 chain

Prashant Chauhan, Fahad Mahmood, Hitesh J. Changlani +2

NiNb${}_2$O${}_6$ is an almost ideal realization of a 1D spin-1 ferromagnetic Heisenberg chain compound with weak unidirectional anisotropy. Using time-domain THz spectroscopy, we…