On the anomalous low-resistance state and exceptional Hall component in hard-magnetic Weyl nanoflakes

Magnetic topological materials, which combine magnetism and topology, are expected to host emerging states exotic quantum phenomena. In this study, with the aid of greatly enhanced coercive fields in high-quality nanoflakes magnetic Weyl semimetal Co3Sn2S2, we investigate anomalous electronic transport properties that difficult reveal bulk Co3Sn2S2 or other materials. When magnetization is antiparallel applied field, low longitudinal resistance state occurs, sharp contrast high for parallel case. Meanwhile, an exceptional Hall component can be up three times larger than conventional resistivity also observed transverse transport. These behaviors further understood by considering nonlinear textures chiral field associated fermions, extending physics providing novel degrees freedom spintronic applications magnets.