Magnon dispersion and dynamic spin response in three-dimensional spin models for $\alpha$-RuCl${}_3$

Lukas Janssen, Stefan Koch, Matthias Vojta

In the search for experimental realizations of bond-anisotropic Kitaev interactions and resulting spin-liquid phases, the layered magnet $\alpha$-RuCl${}_3$ is a prime candidate. Its mode…