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Cd3As2 is a model material of Dirac semimetal with a linear dispersionrelation along all three directions in the momentum space. The unique bandstructure of Cd3As2 makes it with both Dirac and topological properties. It canbe driven into a Weyl semimetal by the symmetry breaking or a topologicalinsulator by enhancing the spin-orbit coupling. Here we report the temperatureand gate voltage dependent magnetotransport properties of Cd3As2 nanoplateswith Fermi level near the Dirac point. The Hall anomaly demonstrates thetwo-carrier transport accompanied by a transition from n-type to p-typeconduction with decreasing temperature. The carrier-type transition isexplained by considering the temperature dependent spin-orbit coupling. Themagnetoresistance exhibits a large non-saturating value up to 2000% at hightemperatures, which is ascribed to the electron-hole compensation in thesystem. Our results are valuable for understanding the experimentalobservations related to the two-carrier transport in Dirac/Weyl semimetals,such as Na3Bi, ZrTe5, TaAs, NbAs, and HfTe5.

Two-Carrier Transport Induced Hall Anomaly and Large Tunable Magnetoresistance in Dirac Semimetal Cd3As2 Nanoplates