Fig. 6: Single-level Landauer model analysis.
From: A single atom change turns insulating saturated wires into molecular conductors
a The modelled current through the Ag–S(CH2)14X//GaOx/EGaIn junctions using Landauer theory (orange solid lines are Landauer fits, symbols represent experimental data). The values of tunnelling barrier height \((\delta {E}_{{\rm{ME}}})\) (b) and the coupling strength \((\varGamma )\) (c) used for modelling the current through the junctions. d Tunnelling decay coefficient β vs. \(\sqrt{\delta {E}_{{\mathrm{{ME}}}}}\) with a linear fit (red line), the error bars represent the standard deviations of the β values from linear fits to Eq. (1). e Double-log plot of RC vs. 1/Γ2 (RC represents contact resistance) where the red line is a power-law fit with a slope of 0.25 and R2 = 0.99, error bars of RC represent the standard deviations of three independent measurements. f Double-log plot of β vs. \({\varepsilon }_{r}\) where the red line is a fit with a slope of −0.82 and R2 = 0.99. The error bars of β represents the same as panel b, and of \({\varepsilon }_{\mathrm{r}}\) represent the standard deviations of three independent measurements.
