Experimental realization of a three-dimensional Dirac semimetal.

  title={Experimental realization of a three-dimensional Dirac semimetal.},
  author={Sergey V. Borisenko and Quinn D. Gibson and Danil V. Evtushinsky and Volodymyr B. Zabolotnyy and Bernd B{\"u}chner and Robert J. Cava},
  journal={Physical review letters},
  volume={113 2},
We report the direct observation of the three-dimensional (3D) Dirac semimetal phase in cadmium arsenide (Cd(3)As(2)) by means of angle-resolved photoemission spectroscopy. We identify two momentum regions where electronic states that strongly disperse in all directions form narrow conelike structures, and thus prove the existence of the long sought 3D Dirac points. This electronic structure naturally explains why Cd(3)As(2) has one of the highest known bulk electron mobilities. This… Expand

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