  We investigate the spin torque in the topological phase of the 3Q
antiferromagnetic (AFM) configuration. We first obtain the band structure to
identify the topology and nature of the different gaps of the system and then
calculate the spin density in the whole system. We demonstrate the presence of
a non-vanishing spin-torque component at the edge of the system and analyze its
effect on the texture. Moreover, we show that the direction of the torque
depends hugely on the way we cut the system to define the edge.
