Realization of quantum anomalous Hall effect from a magnetic Weyl semimetal

The following article predicted observation of quantum anomalous hall effect in Wyel semimetal. So far, there are already many candidates for the magnetic WSMs from theoretical proposals, and some of them host strong AHE. Now quantum anomalous hall effect is observed in 2D insulating system having chiral edeg state whereas wyel semimetal is 3D topological system (sort of metalic).  They proposed that Co3Sn2S2 is a promising candidate by breaking translational symmetry along one direction of low carrier density Wyel semimetal.

https://arxiv.org/abs/1712.08115