Figure 2: Binding energy change versus biaxial strain for CO*/Ni(211) and CO*/Ni(111).
From: Mechanical work makes important contributions to surface chemistry at steps
(a), Change in binding energy ΔEBE versus strain, showing that the response at the (211) step has increasing binding energy under compressive strain that is opposite from the trend typically found on close-packed (111) surface. (b), Change in electronic contribution to binding, ΔEelec (red), showing the expected increase in binding energy under tensile strain for both (111) and (211), and correlating with the negative of the change in the d-band centre, −ΔEd (blue). (c), Change in mechanical contribution to binding ΔEmech, which is negligible for the (111) terrace but which is large and with compression increasing binding and is responsible for the new trend of increased total binding energy under compressive strain. Vertical axes are in units eV.
