Kitaev materials beyond iridates: Order by quantum disorder and Weyl magnons in rare-earth double perovskites
Kitaev materials beyond iridates: Order by quantum disorder and Weyl magnons in rare-earth double perovskites
Motivated by the experiments on the rare-earth double perovskites, we propose a generalized Kitaev-Heisenberg model to describe the generic interaction between the spin-orbit-entangled Kramers doublets of the rare-earth moments. We carry out a systematic analysis of the mean-field phase diagram of this new model. In the phase diagram, there exist …