The recursive Green function (RGF) method is used to obtain the surface and
adatom RGFs for an electrified substate. The electrochemisorption (ECS) pr
ocess is described, by invoking the Anderson-Newns (AN) model, whereby a se
lf-consistent treatment of the ECS energy and charge transfer is provided.
The role of the electric field, and the presence of surface states (SS), in
governing magnetic and non-magnetic ECS is discussed in the case of H-Cr.
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