iamroot / wannier_tools

Wannier tools set for topological novel materials

Wannier_tools

More examples in Wiki for Wannier_tools

Authorship

Written by QuanSheng Wu in Fortran 90 ([e-mail] [e-mail])

Copyright (c) 2016 QuanSheng Wu and ShengNan Zhang. All rights reserved.

Pull down the package

git clone https://github.com/quanshengwu/wannier_tools.git

Brief introductions

Use tight binding model to get the surface states of slab systems or edge states of nanowire systems or just bulk bands. Especially usefull for topological novel systems, including topological insulator, Dirac semimetal, Weyl semimetal, nodal line systems, nodal chain systems, triple point systems and unknown topological systems.

With given tight binding model well written in the format of wannier90_hr.dat in Wannier90,

0. There are several examples in the examples folder, including Bi2Se3, WTe2, IrF4. The user guide is in the doc folder. Please read the user guide first.

1. Identify topological class by calculating the Wilson loop (Wannier charge center)

2. Get surface state spectrum.

3. Identify Weyl points and nodal-line structure.

License and agreement

If you use our code, please cite this website “ The surface spectrums are calculated by the software package Wannier_tools~\cite{wannier_tools}, which is based on the iterative Green’s function~\cite{Sancho1985}.”

Reference

wannier_tools: Q.S.Wu, S.N.Zhang, https://github.com/quanshengwu/wannier_tools

Sancho1985: Highly convergent schemes for the calculation of bulk and surface Green functions, M P Lopez Sancho, J M Lopez Sancho, J M L Sancho and J Rubio, J.Phys.F.Met.Phys.15(1985)851-858

If you have good ideas to improve this code, do not hesitate to contact me. Your contribution will be recorded.

Publication

• Triple Point Topological Metals Ziming Zhu, Georg W. Winkler, QuanSheng Wu, Ju Li, Alexey A. Soluyanov arXiv:1605.04653 Phys. Rev. X 6, 031003 – Published 7 July 2016.
• Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2, A. Tamai, Q. S. Wu, I. Cucchi, F. Y. Bruno, S. Ricco, T.K. Kim, M. Hoesch, C. Barreteau, E. Giannini, C. Bernard, A. A. Soluyanov, F. Baumberger arXiv:1604.08228
• Nodal chain metals, Tomáš Bzdušek, QuanSheng Wu, Andreas Rüegg, Manfred Sigrist, Alexey A. Soluyanov arXiv:1604.03112, 2016 Shown in Nature soon.
• Surface states and bulk electronic structure in the candidate type-II Weyl semimetal WTe2, F. Y. Bruno, A. Tamai, Q. S. Wu, I. Cucchi, C. Barreteau, A. de la Torre, S. McKeown Walker, S. Riccò, Z. Wang, T. K. Kim, M. Hoesch, M. Shi, N. C. Plumb, E. Giannini, A. A. Soluyanov, F. Baumberger arXiv:1604.02411, 2016
• Topological Phases in InAs1−xSbx: From Novel Topological Semimetal to Majorana Wire, Georg W. Winkler, QuanSheng Wu, Matthias Troyer, Peter Krogstrup, Alexey A. Soluyanov arxiv:1602.07001, 2016
• Type-II Weyl semimetals, Alexey A. Soluyanov, Dominik Gresch, Zhijun Wang, QuanSheng Wu, Matthias Troyer, Xi Dai & B. Andrei Bernevig, Nature 527, 495–498 (26 November 2015)