Fig. 1. Theoretical fit to the tunneling conductance measurement²⁶.

a Open circles are tunneling conductance $G$ of twisted bilayer graphene at twist angle $1.10^{\circ }$, and solid lines are fitting according to Eq. (5) with details given in the Supplementary Material Sec. I. Dashed lines denote singularity energies, indicating the asymmetry of conductance peaks. b The peak at $E_{\mathrm{v}}=16.72$ meV plotted in logarithmic scales. Electron and hole sides of the peak fall into two parallel lines with the same slope $-1∕4$ and asymmetry ratio $\eta =1.32\approx \sqrt{2}$. The only parameter in b is the background offset $G_c=57.6$ nS.