(a) Schematic sketch of the magnetoresistance measurements in Ref. [44]. The Berry’s phase was fitted in the regimes of (b) 5–7 T (corresponding to ninth to eleventh Landau levels); (c) 7–10 T (seventh to ninth Landau levels); and (d) 10–15 T (fifth to seventh Landau levels).^[44] They proposed that these changes of the Berry’s phase suggest a field-induced topological phase transition.^[44]