Extended Data Fig. 5: Density-dependent spectroscopy on a non-magic-angle device.
From: Spectroscopic signatures of many-body correlations in magic-angle twisted bilayer graphene
a, dI/dV measured on an AA site as a function of sample bias and gate voltage on the region with θ = 1.72° (Vset = −100 mV, Iset = 180 pA, Vmod = 2 mV). b–e, Normalized dI/dV spectra at different gate voltages extracted from a. The curves are shifted vertically by 0.4 each for clarity. The black dotted line indicates the Fermi level. We note that the electron and hole dopings are symmetric, which can be achieved by different tip conditioning (see Methods for discussion).
