Extended Data Fig. 2: Tautomerization analysis.
a, Current time trace with tautomerization events marked by ’ × ’. b, Numerical derivative of a. c, Histogram of current values in a, the solid line represents a fit, which is a sum of two Gaussians. d, Difference image obtained by subtracting the images representing configuration A and configuration B. Parameters: V = 0.55 V, I = 10 pA, P ≈ 15 μW, hνin = 2.00 eV, scale bar: 1 nm.