Topological nematic phase in Dirac semimetals

被引：6

作者：

Zhang, Rui-Xing ^{[1
]}

Hutasoit, Jimmy A. ^{[2
]}

Sun, Yan ^{[3
]}

Yan, Binghai ^{[3
,4
]}

Xu, Cenke ^{[5
]}

Liu, Chao-Xing ^{[1
]}

机构：

[1] Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA

[2] Leiden Univ, Inst Lorentz, POB 9506, NL-2300 RA Leiden, Netherlands

[3] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[4] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[5] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 04期

基金：

美国国家科学基金会;

关键词：

DISCOVERY; CD3AS2;

D O I：

10.1103/PhysRevB.93.041108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the interaction effect in a three-dimensional Dirac semimetal and find that two competing orders, charge-density-wave orders and nematic orders, can be induced to gap the Dirac points. Applying a magnetic field can further induce an instability towards forming these ordered phases. The charge-density-wave phase is similar to that of aWeyl semimetal, while the nematic phase is unique for Dirac semimetals. Gapless zero modes are found in the vortex core formed by nematic order parameters, indicating the topological nature of nematic phases. The nematic phase can be observed experimentally using scanning tunneling microscopy.

引用

页数：5

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