Doping-dependent magnetism in topological Weyl semimetal Co3Sn2S2

We propose a systematic investigation of the magnetic properties of Co3Sn2S2 – one of the first experimentally confirmed ferromagnetic topological Weyl semimetals. By doping Ni or Fe to substitutionally replace Co, and by carrying out an element-specific dichroism study, we intend to track the interplay between the dopant and the host material, in order to understand the origin of the giant intrinsic anomalous Hall angle and anomalous Hall conductivity at certain doping levels. This study will promote the development of high-efficiency spintronic applications in topological materials.