Extended Data Fig. 5: Metastable states and polarization in TDBG.
From: Berry curvature dipole senses topological transition in a moiré superlattice
a, Electronic structure of Graphene-Graphene-hBN shows a band gap of 26 meV at K point. The inset shows the spatial distribution of the wave functions of bands labelled 2 and 3. b, Electric field (E) calculated from the slope of the average macroscopic potential of Graphene-Graphene-hBN in vacuum. c, Evolution and crossing of band 2 and 3 at E = − 0.0039 V/Å and E = 0.0039 V/Å of upper and lower trilayer of hBN-TDBG-hBN as a function of electric field using our rigid band model. d, metastable states for (i) E < − 0.0039 V/Åand (ii) E > 0.0039 V/Å, with nonzero polarization in hBN-TDBG-hBN that are accessible with the electric field.
