Abstract
The structure of unoccupied electronic states in Xe condensed on differently prepared metal surfaces has been observed by inverse photoemission spectroscopy. The Xe/metal interface is interpreted in the framework of Schottky barrier theory. On low workfunction surfaces a wetting to non-wetting phase transition is inferred from dramatic changes in the unoccupied level structure. Existing data in the literature indicate non-wetting behaviour of Xe on low work-function materials to be a quite general phenomenon.
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References
H. Schlichting, P. Feulner, D. Menzel: Verhandig. DPG (VI)22, II, 0–84 (1987)
N.D. Lang: Phys. Rev. Lett.46, 842 (1981)
N.D. Lang, A.R. Williams: Phys. Rev. B25, 2940 (1982)
G. Kaindl, T.C. Chiang, D.E. Eastman, F.J. Himpsel: Phys. Rev. Lett.45, 1808 (1980)
K. Horn, K.H. Frank, J.A. Wilder, B. Reihl: Phys. Rev. Lett.57, 1064 (1986)
K. Wandelt, W. Jacob, N. Memmel, V. Dose: Phys. Rev. Lett.57, 1643 (1986)
U. Rössler: InRare Gas Solids, Vol. I, ed. by M.L. Klein, J.A. Venables (Academic, London 1976) p. 505
W. Mönch: InFestkörperprobleme 26, 67 (Vieweg, Braunschweig 1986)
M. Schlüter: Thin Solid Films93, 3 (1982)
W. Jacob, E. Bertel, V. Dose: Phys. Rev. B35, 5910 (1987)
A. Thomy, X. Duval, J. Regnier: Surf. Sci. Rep.1, 1 (1983)
M. Bienfait: Surf. Sci.162, 411 (1985)
The Xe vapor pressure may have to exceed the equilibrium bulk condensation pressure in order to obtain condensation on the K substrate [13]. Accordingly, an exact coverage calibration is rather difficult. The coverages given in the text are estimated from IPE spectral intensities
J.A. Venables, G.D.T. Spiller, M. Hanbücken: Rep. Prog. Phys.47, 399 (1984)
B.E. Nieuwenhuys, O.G. Van Aardenne, W.M.H. Sachtler: Chem. Phys.5, 418 (1974)
R. Pandit, M. Schick, M. Wortis: Phys. Rev. B26, 5112 (1982)
J.E. Cunningham, D.K. Greenlaw, C.P. Flynn: Phys. Rev. B22, 717 (1980)
Doon Gibbs, J.E. Cunningham, C.P. Flynn: Phys. Rev. B29, 5292 (1984)
H.H. Rotermund, K. Jacobi; Surf. Sci.126, 32 (1983)
D.R. Mullins, J.M. White, H.S. Luftman: Surf. Sci.167, 39 (1986)
M. Onellion, J.L. Erskine: Surf. Sci.177, L983 (1986)