Figure 2: Spatial variation of Fano line shape.
From: Sub-molecular modulation of a 4f driven Kondo resonance by surface-induced asymmetry
dI/dV spectroscopy (Vset=−70 mV, Iset=0.5 nA) acquired over the centre (black) and two sides (red and blue) of the top ligand of the DyPc2 molecule, vertically offset for clarity. A clear difference in amplitude is observed on alternating sides of the ligands. A Fano feature is observed near 0 V, along with a broad peak centred at ∼50–60 mV on the upper Pc ligand and at ∼90 mV at the centre of the molecule. Solid lines show a fit with a Fano line shape and a Gaussian. Inset shows a constant current topographic image (Vset=0.1 V, Iset=0.1 nA) of DyPc2; the position at which each spectrum shown has been acquired is marked in the corresponding colour.
