Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9595542 | Surface Science | 2005 | 9 Pages |
Abstract
Early stages of rare-earth metal (Yb and Eu) growth on a vicinal, single-domain Si(1Â 0Â 0)2Â ÃÂ 1 surface have been studied in the coverage range of 0.1-0.3 monolayer (ML) by low energy electron diffraction, scanning tunneling microscopy, and synchrotron radiation photoemission spectroscopy. We show that Yb induces the 2Â ÃÂ 3 periodicity in the whole range of coverage studied. The 2Â ÃÂ 3 reconstruction coexists with the local 3Â ÃÂ 2/4Â ÃÂ 2 structure at about 0.2Â ML of Yb. In contrast, Eu forms the 3Â ÃÂ 2 periodicity at 0.1-0.2Â ML, whereas this structure is converted into the 2Â ÃÂ 3 phase at about 0.3Â ML. The atomic arrangement and electronic properties of these reconstructions and the adsorbate-mediated modification of surface morphology are investigated.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
R.E. Perälä, M. Kuzmin, P. Laukkanen, R.-L. Vaara, I.J. Väyrynen,