Extended Data Fig. 6: Line KPFM taken across different-sized QADs in PtTe2.
a-d, STM images with the dashed lines to mark the positions for taking the line KPFM at different-sized of QADs. e, Summary of the line KPFM results, the height is fixed at the setpoint of VS = − 2.5 V, It = 300 pA. A larger LCPD indicates more negative charge accumulation at the certain position. f, Frequency shift measured as a function of applied sample bias at the center of the edge for each QADs. The black cross marked the peak position for each parabolic curves from fitting.
