Extended Data Fig. 9: Gap Energies under perpendicular magnetic fields B⊥.
From: Excitonic topological order in imbalanced electron–hole bilayers
(a) The Arrhenius plot of the Corbino conductance σc at the CNP with temperatures under fixed B⊥. The Corbino conductance is normalized to the values at 5 K. The EI gap energy under a magnetic field is deduced through σc ∝ exp (−Δ/2kbT), their values are displayed in (b). The error bars come from the uncertainty in the extraction of gap energy from the Arrhenius plot. (c) shows the voltage ranges where the state in the topological EI regime is insulating (σc < 0.2 μS) at B⊥. Obviously, as B⊥ increases, the EI gap becomes larger, but the voltage ranges of the insulating state in the topological EI regime remain nearly the same.
