Direct observation of a new growth mode: subsurface island growth of Cu on Pb(111)
C. Nagl, E. Platzgummer, M. Schmid, P. Varga, S. Speller* and W. Heiland*
Institut für Allgemeine Physik,
Technische Universität Wien, A-1040 Wien, Austria
*Fachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
Phys. Rev. Lett. 75 (1995) 2976-2979 and 76 (1996) 3240 (E)
Atomically resolved scanning tunneling microscopy on Cu/Pb (111)
reveals a new growth mode, contrary to the Volmer-Weber
mode expected from the significantly lower surface energy of Pb.
(111)-oriented Cu islands with a thickness of 3 - 11 layers are immersed in
the Pb substrate and covered by a single close-packed Pb layer.
This sub-surface growth mode occurring at room temperature can be explained
by simple thermodynamic considerations.
Corresponding author: M. Schmid (schmid).
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Please note that the atomically resolved STM images have been reproduced incorrectly
in this article. The correct versions of
in this article are shown in the errata (PRL vol. 76, p. 3240) and on the web in the
IAP/TU Wien STM Gallery
Cu on Pb page).