Magnetization relaxation and search for the magnetic gap in bulk-insulating V-doped (Bi, Sb)${}_2$Te${}_3$

E. Golias, E. Weschke, T. Flanagan +9

V-doped (Bi,Sb)${}_2$Te${}_3$ has a ten times higher magnetic coercivity than its Cr-doped counterpart and therefore is believed to be a superior system for the quantum anomalous Hall…