Weyl-link semimetals
Mesoscale and Nanoscale Physics
2017-08-30 v3
Abstract
A family of topological semimetallic phases where twofold degenerate gapless points form linked rings is introduced. We refer to this phase as Weyl-link semimetals. A concrete two-band model with two linked nodal lines is constructed. We demonstrate that the Chern-Simons 3-form depends on the linking number of rings in a generic two-band model. In addition, we show the emergence of zero-energy modes in the Landau level spectrum can reveal the location of nodal lines, providing a method of probing their linking number.
Cite
@article{arxiv.1704.01948,
title = {Weyl-link semimetals},
author = {Po-Yao Chang and Chuck-Hou Yee},
journal= {arXiv preprint arXiv:1704.01948},
year = {2017}
}
Comments
9 pages, 4 figures -- Published in PRB Rapid Communication