Reports results concerning the binding energies of W(100) 4f surface core levels for clean and hydrogen induced reconstructed surfaces. It was found that, at about 350K, the clean surface was unreconstructed and gave rise to two surface peaks, on the lower binding energy side of the bulk peak. The first one corresponded to surface atoms and the other to the first underlayer ones. In the case of a reconstructed surface, these two peaks appear at higher binding energies (relative to the previous ones). In the intermediate case, all these peaks coexist, which seems to indicate a reconstruction by domains. The energy positions of these peaks were reproduced well by a theoretical model.

W4f Core Level Shift Study on Unreconstructed and Hydrogen Reconstructed W(100) Faces. C.Guillot, C.Thuault, Y.Jugnet, D.Chauveau, R.Hoogewijs, J.Lecante, T.M.Duc, G.Treglia, M.C.Desjonqueres, D.Spanjaard: Journal of Physics C, 1982, 15[18], 4023-32