Figure 2: The subgap states exist inside and outside vortices.

(a) Ratio σ_SGS/σ_SC of the conductances at 5 and 17 meV measured at T=0.4 K in a 6 T field over a 90 × 90 nm² area. The vortex cores appear in red and the inter-vortex regions in blue. The white arrow indicates a 20-nm path starting in a vortex core. (b) Conductance spectra along the white arrow shown in a. The spectra are coloured according to the conductance ratio σ_SGS/σ_SC. The conductance scale is shown for the bottom spectrum; the others are displaced vertically by 0.05 nS for visibility. The distance d to the core is shown on the right axis. The red dashed lines mark the energies 5 and 17 meV.