The effect of external fields on the structural and electronic properties of Ag(110) was investigated using local-density-functional theory. It was found that Ag(110) underwent a (1 x 2) missing row reconstruction as an excess charge of ≃0.05 electron per surface atom was added onto the surface. The result supported an electron-donation mechanism for the alkali-metals-induced reconstruction on the (110) surface of the 3d and 4d fcc metals. The surface interlayer spacings were found to be insensitive to the applied field in the absence of field-induced surface reconstruction.

External-Charge-Induced Surface Reconstruction on Ag(110). C.L.Fu, K.M.Ho: Physical Review Letters, 1989, 63, 1617-20