Topological Weyl Semi-metal from a Lattice Model
Mesoscale and Nanoscale Physics
2012-03-26 v2 Materials Science
Abstract
We define and study a three dimensional lattice model which displays a Weyl semi-metallic phase. This model consists of coupled layers of quantum (anomalous) Hall insulators. The Weyl semi-metallic phase appears between a resulting quantum Hall insulating phase and a normal insulating phase. Weyl fermions in this Weyl semi-metal, similar to Dirac fermions in graphene, have their lattice pseudo-spin locked to their momenta. We investigate surface states and Fermi arcs, and their evolution for different phases, by exactly diagonalizing the lattice model as well as by analyzing their topological origins.
Keywords
Cite
@article{arxiv.1202.3459,
title = {Topological Weyl Semi-metal from a Lattice Model},
author = {Pierre Delplace and Jian Li and David Carpentier},
journal= {arXiv preprint arXiv:1202.3459},
year = {2012}
}
Comments
Accepted version for publication in EPL. 6 pages, 4 figures