Automating the computation of topological numbers of band-structures
Project description
Z2Pack is a tool that computes topological invariants and illustrates non-trivial features of Berry curvature. It works as a post-processing tool with all major first-principles codes (z2pack.fp), as well as with tight-binding models (z2pack.tb).
It tracks the charge centers of hybrid Wannier functions, as described here to calculate these topological invariants.
The Wannier charge centers are computed from overlap matrices that are obtained either directly (for tb) or via the Wannier90 code package (fp).
Documentation: http://z2pack.ethz.ch/doc
Online interface: http://z2pack.ethz.ch/online
