  The magnetotransport properties of disordered ferromagnetic kagome layers are
investigated numerically. We show that a large domain-wall magnetoresistance or
negative magnetoresistance can be realized in kagome layered materials (e.g.
Fe$_3$Sn$_2$, Co$_3$Sn$_2$S$_2$, and Mn$_3$Sn), which show the quantum
anomalous Hall effect. The kagome layers show a strong magnetic anisotropy and
a large magnetoresistance depending on their magnetic texture. These
domain-wall magnetoresistances are expected to be robust against disorder and
observed irrespective of the domain-wall thickness, in contrast to conventional
domain-wall magnetoresistance in ferromagnetic metals.
