Fig. 2: ARPES results of TBG with large twist angle.

a ARPES image of TBG sample, which is the same as shown in Fig. 1b. Two Dirac dispersions can be seen. The band modification is shown by an arrow. b The same ARPES image on which the schematic band structure with θ_c = 2.9° is overlaid. Blue and red bands correspond to the lower and upper graphene layers. c Three-dimensional model of the band structure of TBG calculated by a tight-binding scheme without the interlayer interaction. d Schematic diagram of the moiré Brillouin zone (mBZ). K_L and K_U represent the position of K points of the lower and upper graphene layers. e–g ARPES images of k_x–k_y at E = −0.2 eV, E–k_y at k_x = 0 Å⁻¹, and E–k_y at k_x = 0.09 Å⁻¹. h ARPES images taken at different locations, shown by dots in the optical micrograph of the sample and the sample holder. Horizontal and vertical scales in the images are the same as in a. The band modification could be observed on the position shown by red and blue dots, while it was not observed on the black dots. The size of the sample holder is also shown at the upper left.