Magneto-transport study in single crystals of Cd3 As2 with different space group symmetry

The 3-D Dirac semi-metal Cd3As₂ is known as a potential parent compound for several unique topological phases such as Weyl semi-metal, topological superconductor, and axion insulator. Its 3D Dirac band has recently been demonstrated by ARPES experiments. In this report, we conduct magneto-transport measurements on single crystals of Cd3As₂ with three different space group symmetries of I4₁cd, I4₁/acd, and P4₂/nmc, which was characterized by X-ray diffraction. Large anisotropy magnetoresistance and splitting of SdH frequency were observed in all Cd3As₂crystals under investigation regardless of the type of space group symmetry suggesting that defects may play an important role. Detailed magneto-transport data at various field orientations will be presented and discussed..