Nodal-link semimetals

In topological semimetals, the valance band and conduction band meet at zero-dimensional nodal points or one-dimensional nodal rings, which are protected by band topology and symmetries. In this Rapid Communication, we introduce “nodal-link semimetals”, which host linked nodal rings in the Brillouin...

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Bibliographic Details
Main Authors: Yan, Zhongbo, Bi, Ren, Lu, Ling, Zhang, Shou-Cheng, Wang, Zhong, Shen, Huitao
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:English
Published: American Physical Society 2017
Online Access:http://hdl.handle.net/1721.1/110651
Description
Summary:In topological semimetals, the valance band and conduction band meet at zero-dimensional nodal points or one-dimensional nodal rings, which are protected by band topology and symmetries. In this Rapid Communication, we introduce “nodal-link semimetals”, which host linked nodal rings in the Brillouin zone. We put forward a general recipe based on the Hopf map for constructing models of nodal-link semimetals. The consequences of nodal ring linking in the Landau levels and Floquet properties are investigated.