Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1−xTe2

Tay-Rong Chang, Su-Yang Xu (), Guoqing Chang, Chi-Cheng Lee, Shin-Ming Huang, BaoKai Wang, Guang Bian, Hao Zheng, Daniel S. Sanchez, Ilya Belopolski, Nasser Alidoust, Madhab Neupane, Arun Bansil, Horng-Tay Jeng, Hsin Lin () and M. Zahid Hasan ()
Additional contact information
Tay-Rong Chang: National Tsing Hua University
Su-Yang Xu: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Guoqing Chang: Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
Chi-Cheng Lee: Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
Shin-Ming Huang: Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
BaoKai Wang: Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
Guang Bian: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Hao Zheng: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Daniel S. Sanchez: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Ilya Belopolski: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Nasser Alidoust: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Madhab Neupane: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University
Arun Bansil: Northeastern University
Horng-Tay Jeng: National Tsing Hua University
Hsin Lin: Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
M. Zahid Hasan: Laboratory for Topological Quantum Matter and Spectroscopy (B7), Princeton University

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: Abstract A Weyl semimetal is a new state of matter that hosts Weyl fermions as emergent quasiparticles. The Weyl fermions correspond to isolated points of bulk band degeneracy, Weyl nodes, which are connected only through the crystal’s boundary by exotic Fermi arcs. The length of the Fermi arc gives a measure of the topological strength, because the only way to destroy the Weyl nodes is to annihilate them in pairs in the reciprocal space. To date, Weyl semimetals are only realized in the TaAs class. Here, we propose a tunable Weyl state in MoxW1−xTe2 where Weyl nodes are formed by touching points between metallic pockets. We show that the Fermi arc length can be changed as a function of Mo concentration, thus tuning the topological strength. Our results provide an experimentally feasible route to realizing Weyl physics in the layered compound MoxW1−xTe2, where non-saturating magneto-resistance and pressure-driven superconductivity have been observed.

Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms10639 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10639

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms10639

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().