Optical signatures of Dirac nodal lines in NbAs 2
Abstract
The 3D nodal points in Dirac and/or Weyl semimetals are in the vanguard of quantum materials research. A hallmark of these systems is the linear band dispersion. This latter electronic stricture gives rise to unconventional transport and optical phenomena. Here, we demonstrate that solids with dispersive nodal lines in the electronic structure share many common aspects with the response of 3D nodal-points systems. We investigated N b A s 2 using a combination of optical and magneto-optical techniques and have identified electromagnetic signature of dispersive nodal lines. This particular compound has allowed us to inquire the impact of spin-orbit coupling on the universal characteristic of nodal metals.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 17, 2018
- Source ID
- 10.1073/pnas.1809631115
Entities
People
- Alexander J. Breindel
- Andrew J. Millis
- Chao Cao
- Chenchao Xu
- D. N. Basov
- Fangcheng Chou
- M. Brian Maple
- Michael Fogler
- Raman Sankar
- T. Timusk
- Ying Wang
- Yinming Shao
- Zhiqiang Li
- Zhiyuan Sun
Organizations
- Academia Sinica
- Army Research Office
- Canadian Institute for Advanced Research
- Columbia University
- Flatiron Institute
- Gordon and Betty Moore Foundation
- Hangzhou Normal University
- McMaster University
- National High Magnetic Field Laboratory
- National Science Foundation
- National Science and Technology Council
- Sichuan University
- United States Department of Energy
- University of California, San Diego
- Zhejiang University