Figure 3: Binding energy versus strain for CO*/Cu(211) under σ[−111] and σ[01–1].
From: Mechanical work makes important contributions to surface chemistry at steps
(a), Change in binding energy ΔEBE versus strain, showing that compressive stress normal to the step increases the binding energy. (b), Change in electronic contribution to binding, ΔEelec (red), which are small but show the expected increase in binding energy under tensile strain for both (111) and (211), and correlate with the negative of the shift of the d-band centre, −ΔEd (blue), under both σ[−111] and σ[01–1] loading states. (c), Change in mechanical contribution to binding ΔEmech, which controls the overall energy change (part(a)) for both σ[−111] and σ[01–1] loading states, with σ[−111] loading causing increased binding under compression. Vertical axes are in units eV.
