Al clusters supported on have been investigated using scanning tunneling microscopy. Al interacts strongly with the surface at room temperature and becomes oxidized by abstracting oxygen from the interface region of the substrate. Highly oxidized Al clusters were found to disorder the substrate in the low coverage regime (0.05 ML) illustrating that Al exhibits a strong chemical interaction with the oxide substrate. Distinct changes in the substrate from a “row” structure to a “net” structure due to Al interacting with oxygen in the topmost layer of the substrate are also observed.
REFERENCES
1.
P. W.
Murray
, F. M.
Leibsle
, C. A.
Murny
, H. J.
Fisher
, C. F. J.
Flipse
, and G.
Thornton
, Phys. Rev. Lett.
72
, 689
(1994
).2.
D.
Novak
, E.
Garfunkel
, and T.
Gustafsson
, Phys. Rev. B
50
, 5000
(1994
).3.
P. W.
Murray
, N. G.
Condon
, and G.
Thornton
, Surf. Sci.
323
, L281
(1995
).4.
5.
V. E. Henrich and P. A. Cox, The Surface Science of Metal Oxides (Cambridge University Press, Cambridge, 1994).
6.
7.
8.
9.
D. L.
Carroll
, M.
Wagner
, M.
Rühle
, and D. A.
Bonnell
, Phys. Rev. B
55
, 9792
(1997
).10.
G. E.
Poirier
, B. K.
Hance
, and J. M.
White
, J. Vac. Sci. Technol. B
10
, 6
(1992
).11.
P. W.
Murray
, N. G.
Condon
, and G.
Thornton
, Phys. Rev. B
51
, 10
989
(1995
).12.
U.
Diebold
, J. F.
Anderson
, K.-O.
Ng
, and D.
Vanderbilt
, Phys. Rev. Lett.
77
, 1322
(1996
).13.
14.
P. W.
Murray
, J.
Shen
, N. G.
Condon
, S. J.
Pang
, and G.
Thornton
, Surf. Sci.
380
, L455
(1997
).15.
16.
J.
Pan
, U.
Diebold
, L.
Zhang
, and T. E.
Madey
, Surf. Sci.
295
, 411
(1993
).17.
18.
19.
20.
D. L.
Carroll
, Y.
Liang
, and D.
Bonnell
, J. Vac. Sci. Technol. A
12
, 2298
(1994
).21.
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