Magnon lifetimes with frustration of exchange and temperature

For the study of thermal transport it necessary to make a description of the magnon lifetimes, dispersions and group velocities. With the use of atomistic spin dynamics it is possible to propagate magnons thermally (sLLG). The magnon lifetimes and dispersions can be derived from the dynamical structure factor. The inclusion of temperature gives the magnon lifetimes a scaling relation beyond the analytical zero-temperature limit.