Color map of dI/dVspectra at different tip substrate separationz. The transport resonances atV2B$V_{\text{2B}}^\pm$andVpmare clearly identified in the spectra forz> 3 nm. The dI/dV-signal in the top right corner has been amplified by a factor 5. A Kondo resonance (red square and inset, the color scale of the inset ranges from 0.2 to 8 nS) emerges atz= 2.8 nm upon detaching the 2B-unit from the substrate.[20]
