Extended Data Fig. 3: Moiré pattern in 1 QL Sb2Te3/6 UC FeTe bilayers under different biases.
From: Moiré engineering of Cooper-pair density modulation states
a-c, Atomic resolution STM images (10 × 10 nm2) measured at Vs = 50 mV (a), 10 mV (b), and 4 mV (c). d, f, Enlarged atomic resolution STM images of the area marked by the green rectangles in (a) and (b). Te+ (light purple) and Te- (dark purple) atoms are the same at Vs = 50 mV, while Te+ atoms are higher than Te- atoms at Vs = 10 mV. e, g, Vertically averaged height profile Z of (d) and (f). Z at Vs = 10 mV reveals the difference between Te+ and Te- atoms. Scale bars: 1 nm (a-c). STM setpoints: Is = 500 pA (a); Is = 500 pA (b); Is = 50 pA (c).
