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

被引：77

作者：

Kushwaha, Satya K. ^{[1
]}

Krizan, Jason W. ^{[1
]}

Feldman, Benjamin E. ^{[2
]}

Gyenis, Andras ^{[2
]}

Randeria, Mallika T. ^{[2
]}

Xiong, Jun ^{[2
]}

Xu, Su-Yang ^{[2
]}

Alidoust, Nasser ^{[2
]}

Belopolski, Ilya ^{[2
]}

Liang, Tian ^{[2
]}

Hasan, M. Zahid ^{[2
]}

Ong, N. P. ^{[2
]}

Yazdani, A. ^{[2
]}

Cava, R. J. ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08542 USA

[2] Princeton Univ, Dept Phys, Princeton, NJ 08542 USA

来源：

APL MATERIALS | 2015年 / 3卷 / 04期

关键词：

WEYL;

D O I：

10.1063/1.4908158

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (C) 2015 Author(s).

引用

页数：9

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