E/T scaling for a possible ferromagnetic quantum critical point in Co3-xNixSn2S2

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A new magnetic Weyl semimetal was recently proposed in the layered half-metal Co3Sn2S2 with Kagomé lattice,whose Weyl points situate only 60 meV from the Fermi energy, resulting in a large anomalous Hall conductivity in the absence of a magnetic field. Co3Sn2S2 is a quasi-2D ferromagnet with a Curie temperature TC= 177 K and a magnetic moment at Co site along c-axis. By doping Ni into Co3Sn2S2, the ferromagnetism is systematically suppressed up to 20 %...
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