arxiv: 1502.03547 · v1 · pith:4YJL2H42new · submitted 2015-02-12 · ❄️ cond-mat.str-el · cond-mat.mtrl-sci

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

Satya K. Kushwaha , Jason W. Krizan , Benjamin E. Feldman , Andras Gyenis , Mallika T. Randeria , Jun Xiong , Su-Yang Xu , Nasser Alidoust

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Ilya Belopolski Tian Liang M. Zahid Hasan N. P. Ong A. Yazdani R. J. Cava

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classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords na3bicrystalswerecharacterizationdiraclinearobservedsemimetal

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High quality hexagon plate-like Na3Bi crystals with large (001) plane surfaces were grown from a molten Na flux. The freshly cleaved crystals were analyzed by low temperature scanning tunneling microscopy (STM) and angle-resolved photoemission spectroscopy (ARPES), allowing for the characterization of the three-dimensional (3D) Dirac semimetal (TDS) behavior and the observation of the topological surface states. Landau levels (LL) were observed, and the energy-momentum relations exhibited a linear dispersion relationship, characteristic of the 3D TDS nature of Na3Bi. In transport measurements on Na3Bi crystals the linear magnetoresistance and Shubnikov-de Haas (SdH) quantum oscillations are observed for the first time.

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

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