Based on ab initio calculations, we demonstrate that the ferromagnetic CdO/EuO superlattice is a simple Weyl semimetal with two linear Weyl nodes in the Brillouin zone, and the corresponding CdO/EuO quantum well realizes the stichometric quantum anomalous Hall state without random magnetic doping. In addition, a simple effective model is presented to describe the basic mechanism of spin polarized band inversion in this system.
@article{arxiv.1308.0349,
title = {Topological States in Ferromagnetic CdO/EuO Superlattices and Quantum Wells},
author = {Haijun Zhang and Jing Wang and Gang Xu and Yong Xu and Shou-Cheng Zhang},
journal= {arXiv preprint arXiv:1308.0349},
year = {2014}
}