## Topological States in Ferromagnetic CdO/EuO Quantum Well    [PDF]

Haijun Zhang, Jing Wang, Gang Xu, Yong Xu, Shou-Cheng Zhang
Based on {\it 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 (QAH) state without random magnetic doping. In addition, a simple effective model is presented to describe the basic mechanism of spin ploarized band inversion in this system.
View original: http://arxiv.org/abs/1308.0349