Fig. 3: Characterization of quantum resonance states trapped in a 12-OQC.
From: Visualizing designer quantum states in stable macrocycle quantum corrals
a Point dI/dV spectra acquired over different sites inside a 12-OQC and Au(111) substrate. dI/dV curves taken at the centre (blue curve), 0.75 nm away from the centre of 12-OQC (red curve), 1.25 nm away from the centre of 12-OQC (orange curve), and taken on Au(111) (grey dashed curve). b Colour-coded dI/dV spectra (spaced by 0.15 nm) taken across the pore of 12-OQC. The actual positions where the dI/dV spectra were taken are indicated by grey dots in the inset STM image in (a). c Colour-coded simulated spectral function curves (spaced by 0.15 nm) taken across the pore of potential corral in gold unit cells (Supplementary Fig. 16). d–g Constant-current dI/dV maps recorded at different energy positions (I = 1 nA for (d, e); I = 1.5 nA for (f, g). Panels d–g refer to the P1 (−0.26 V), P3 (+0.46 V), P4 (+0.91 V), and P5 (+1.56 V) of resonance states, respectively. (The chemical structure of 12-OQC is superimposed on panel (d) to indicate its position.) h–k Simulated spectral function maps acquired at different energy positions close to the energetic positions of these quantum resonance states observed experimentally. Panels h–k refer to the P1 (−0.34 eV), P3 (+0.49 eV), P4 (+0.92 eV), and P5 (+1.64 eV) of resonance states, respectively. Scale bar: 1 nm.
