Extended Data Fig. 10: Filling-dependent size evolution of the inner and outer gaps measured in different spatial positions in MATTG device #1.

a, Extracted from Fig. 3a. The outer gap is marked in red and the inner gap is marked in blue. When the inner gap is merged with the outer gap, we mark that filling factor range as ‘Single-gap regime’. b, Same dataset as Fig. 4g. c, Outer and inner gaps are extracted from dI/dV spectra taken at region with 1.62° twist angle. Panels a–c are located within a 1.0 × 1.0-μm area. d–f, Outer and inner gaps are extracted from dI/dV spectra taken at region with 1.56° (d), 1.57° (e) and 1.55° (f) twist angle. Panels d–f are measured in an area that is moved 2.6 μm in  the +y direction from the area in which panels a–c are measured.