Fig. 2: Imaging of the TDTG moiré.

a–d Mid-IR near-field imaging (over green square in Fig. 1a) showing bright (convex) and dark (concave) domains: normalized amplitude (i) and phase (ii) at different probe demodulation harmonics from 2nd (a) to 5th (d). The measurement was done at room temperature and a laser frequency of 1000 cm⁻¹. a–d share a color-bar and scale-bar. Dashed arcs in (d) with a radius of 850 nm highlight the domain shape. e Amplitude (top) and phase (bottom) contrasts between the two domains of (a–d) as a function of demodulation harmonics, revealing a monotonic trend. f Differential conductance measured by STS, acquired at a sample bias of −20 meV. g Tunneling spectrum measured in each of the two domains (marked by correspondingly colored dots in (f)). The dashed line marks the energy at which (f) was acquired. Each curve is normalized to its value at 500 mV. h Tunneling spectrum measured on exposed TLG section (green dot in Fig. 1a) indicative of a Bernal stacked TLG source crystal.