Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5424280 | Surface Science | 2009 | 8 Pages |
Surface structures of tin (Sn) adsorbed Cu(0Â 0Â 1) have been studied by scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and Sn 4d core-level spectroscopy. A structural model for the 58 mono-atomic-layer (ML) Sn-adsorbed Cu(0Â 0Â 1) surface is proposed on the basis of the observed atomic images and the core-level spectrum. The model is consistent with a height profile of the phase boundary between 12 ML Sn on Cu(0Â 0Â 1) and 58 ML Sn on Cu(0Â 0Â 1). After annealing to 410Â K, the surface structure of 58 ML Sn on Cu(0Â 0Â 1) changed to a mixture of 12 ML Sn on Cu(0Â 0Â 1) areas and a new phase, which has a Sn coverage of about 2 ML. From the STM observation, the surface of the new phase consists of 43-34 domains separated by a disordered area. We propose a structure model consistent with the observed results.