Eu- and Yb-induced reconstructions on a vicinal Si(1 0 0) surface |
| |
Authors: | RE Perälä M Kuzmin P Laukkanen R-L Vaara IJ Väyrynen |
| |
Institution: | Department of Physics, University of Turku, FIN-20014 Turku, Finland |
| |
Abstract: | Early stages of rare-earth metal (Yb and Eu) growth on a vicinal, single-domain Si(1 0 0)2 × 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 2 × 3 periodicity in the whole range of coverage studied. The 2 × 3 reconstruction coexists with the local 3 × 2/4 × 2 structure at about 0.2 ML of Yb. In contrast, Eu forms the 3 × 2 periodicity at 0.1-0.2 ML, whereas this structure is converted into the 2 × 3 phase at about 0.3 ML. The atomic arrangement and electronic properties of these reconstructions and the adsorbate-mediated modification of surface morphology are investigated. |
| |
Keywords: | Silicon Europium Ytterbium Surface structure morphology roughness and topography Vicinal single crystal surfaces |
本文献已被 ScienceDirect 等数据库收录! |