Non-trivial Berry phase in the Cd3As2 3D Dirac semimetal

doi:10.1088/1742-6596/647/1/012064

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Non-trivial Berry phase in the Cd3As2 3D Dirac semimetal

W. Desrat, C. Conséjo, F. Teppe

Oct 13, 2015

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Journal

Journal of Physics: Conference Series

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Key Takeaway

Key Takeaway: Cd3As2 exhibits 3D Dirac fermions, a Berry phase, and a metal-insulator transition driven by magnetic fields, with a weakly anisotropic Fermi surface.

Abstract

We present magnetotransport measurements performed on Cd3As2 samples. Our results confirm the existence of 3D Dirac fermions in this material with a π Berry phase. A metal-insulator transition driven by the magnetic field is also observed for B < 1 T. Finally the in situ rotation of the sample reveals that the Fermi surface is a weakly anisotropic ellipsoid.

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