Chemistry Reference
In-Depth Information
500 nm STM image of a Pb film on Si(111) substrate.
Flat-topped islands rising 4 or 5ML above the wetting layer can be seen; no other
island heights have been observed. In this coverage range, Pb islands never merge
to form a continuous film. Figure
4.7
b shows a 500
Figure
4.7
a shows a 500
×
×
500 nm image of an almost
Fig. 4.7
STMimagesofPbon(
a-f
) Si(111)
√
3
×
√
3-
R
30
◦
-Pb,
(g)
Ge(111)-
√
3
×
√
3-
R
30
◦
-
Pb, and
(h)
Si(111)-7
7. Layer thicknesses are indicated in each panel and are measured with
respect to the wetting layer. The table summarizes the observed thicknesses for each interface with
even-odd crossovers indicated in
bold italics
. Image sizes and postannealing temperatures are also
indicated in
a
-
h
.From[
8
]
×
