Topological nematic phase in Dirac semi-metals
Strongly Correlated Electrons
2016-05-10 v2 Mesoscale and Nanoscale Physics
Abstract
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 as that of a Weyl 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 tunnelling microscopy.
Cite
@article{arxiv.1503.00358,
title = {Topological nematic phase in Dirac semi-metals},
author = {Rui-Xing Zhang and Jimmy A. Hutasoit and Yan Sun and Binghai Yan and Cenke Xu and Chao-Xing Liu},
journal= {arXiv preprint arXiv:1503.00358},
year = {2016}
}
Comments
15 pages, 7 figures