Figure 5: The magnetic field induced evolution and the spatial variation of the LL oscillations.

(a) The mean values of the LL oscillations calculated in the window from −10 to 10 mV (open squares) and −1 to 1 mV (open circles) at each magnetic field. (b) The ratio of the mean values of the LL oscillations averaged in the range of (−1 mV, 1 mV) and the range of (−10 mV, 10 mV). The error bars in a,b are defined as the differences between the mean values and those from the fitting to the Gaussian distribution, see Supplementary Note 5. (c) The spatially resolved tunnelling spectra taken from a series of points equally spaced along the arrowed line in d at 400 mK and 5 T in a different region, I_t=101 pA. (d) The topography of the measured area for data in c. Scale bar, 2 nm.