Fig. 4: Two- and three-body correlations as a function of the energy level.

a Zero-bias conductance G₀ and phase shift δ_σ as a function of ε/U. The marks are experimental results obtained at B = 0. The dashed curve for G₀ is given by the NRG calculations with U/Γ = 3.5. b Curvature α_V as a function of ε/U. The dashed curve is the NRG results with U/Γ = 3.5. (Inset) dI/dV as a function of \({\rm{sign}}(V)\times {(eV/{k}_{{\rm{B}}}{T}_{{\rm{K}}})}^{2}\) at ε/U = − 0.51 and −0.65. Error bars correspond to the uncertainty of the linear fit performed on slightly different ranges. c Three-body correlations W₃ as a function of ε/U. We compare the experimental results with the NRG results with U/Γ = 3.5 (dashed curve)^20-23. The error bars are determined based on those of α_V shown in Fig. 4b.