Apparent inconsistency between Streda formula and Hall conductivity in reentrant integer quantum anomalous Hall effect in twisted MoTe 2

In a system with a gap to charge excitations, there are two ways to measure the Hall conductivity: transport and via the Streda formula. Both measurements should agree, although in a recent experiment in twisted MoTe₂ they do not. To resolve this discrepancy, the authors propose here a reentrant bubble/crystal phase. They substantiate this with an analysis of the experimental data. One reentrant phase may be masked by a phase transition, providing insight into the nature of a nearby superconducting phase.