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The Berry phase understanding of electronic properties has attracted specialinterest in condensed matter physics, leading to phenomena such as theanomalous Hall effect and the topological Hall effect. A non-vanishing Berryphase, induced in momentum space by the band structure or in real space by anon-coplanar spin structure, is the origin of both effects. Here, we report asign conversion of the anomalous Hall effect and a large topological Halleffect in (Cr0.9B0.1)Te single crystals. The spin reorientation from aneasy-axis structure at high temperature to an easy-cone structure below 140 Kleads to conversion of the Berry curvature, which influences both, anomalousand topological, Hall effects in the presence of an applied magnetic field andcurrent. We compare and summarize the topological Hall effect in fourcategories with different mechanisms and have a discussion into the possibleartificial fake effect of topological Hall effect in polycrystalline samples,which provides a deep understanding of the relation between spin structure andHall properties.

Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te