Fig. 4

Sub-Å resolution in camera-based STEM-DPC. a HAADF detector image of DSO, showing the resolved Dy–Dy doublets in the [001] projection. Spacing measured as 0.83 ± 0.15 Å. Maps of b the atomic potential and c the electric field intensity from the simultaneously acquired 4D dataset. d Line profiles (width = 1 Å) of the electric field intensity map shown in c with a denoised and sub-pixel interpolated line profile overlaid. Vertical lines show the same regions in all four plots to demonstrate the doublet resolution. Data shown  here was obtained by cropping and rotating 90° Fig. 3a, d, respectively