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

Satya K. Kushwaha, Jason W. Krizan, Benjamin E. Feldman, András Gyenis, Mallika T. Randeria, Jun Xiong, Su Yang Xu, Nasser Alidoust, Ilya Belopolski, Tian Liang, M. Zahid Hasan, N. P. Ong, A. Yazdani, R. J. Cava

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

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 and angle-resolved photoemission spectroscopy, allowing for the characterization of the three-dimensional (3D) Dirac semimetal (TDS) behavior and the observation of the topological surface states. Landau levels 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 quantum oscillations are observed for the first time.

Original languageEnglish (US)
Article number041504
JournalAPL Materials
Volume3
Issue number4
DOIs
StatePublished - Apr 1 2015

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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