Collective relaxation eigenmodes and anisotropic magnon thermal transport in $\hat{I}\pm$-MnTe

Rui-Jie Yao, Lei Wang, Bo-Ye Sun

The intrinsic magnon thermal transport in the altermagnet $\hat{I}\pm$-MnTe is studied by solving the three-dimensional linearized Boltzmann transport equation with the four-magnon collisi…