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High quality hexagon plate-like Na3Bi crystals with large (001) planesurfaces were grown from a molten Na flux. The freshly cleaved crystals wereanalyzed by low temperature scanning tunneling microscopy (STM) andangle-resolved photoemission spectroscopy (ARPES), allowing for thecharacterization of the three-dimensional (3D) Dirac semimetal (TDS) behaviorand the observation of the topological surface states. Landau levels (LL) wereobserved, and the energy-momentum relations exhibited a linear dispersionrelationship, characteristic of the 3D TDS nature of Na3Bi. In transportmeasurements on Na3Bi crystals the linear magnetoresistance and Shubnikov-deHaas (SdH) quantum oscillations are observed for the first time.

Bulk crystal growth and electronic characterization of the 3D Dirac Semimetal Na3Bi