This paper was accepted for publication in the journal Physical Review B and the definitive published version is available at https://doi.org/10.1103/PhysRevB.94.235412
This work was supported by Sao Paulo Research Foundation (FAPESP, Grant No. 2014/15372-3) (E.G), CNPq (E.G.), the Watson Institute at Brown University under a Brazil Collaborative Grant (S.-C.Y.) and the National
Science Foundation under Grant No. DMR-1506634 (K.R.E.). T.A-N. has been supported in part by the Academy of Finland through its COMP Centre of Excellence Program (projects No. 251748 and No. 284621).