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Crystalline structure and vacancy ordering across a surface phase transition in Sn/Cu(001)

AuthorsMartínez-Blanco, J.; Joco, V.; Quirós, Carlos ; Segovia, P.; Michel, E. G.
Issue Date2018
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry B 122(2): 745-756 (2018)
AbstractWe report a surface X-ray diffraction study of the crystalline structure changes and critical behavior across the (3√2 × √2)R45° → (√2 × √2)R45° surface phase transition at 360 K for 0.5 monolayers of Sn on Cu(100). The phase transition is of the order-disorder type and is due to the disordering of the Cu atomic vacancies present in the low temperature phase. Two different atomic sites for Sn atoms, characterized by two different heights, are maintained across the surface phase transition.
Publisher version (URL)https://doi.org/10.1021/acs.jpcb.7b06398
Identifiersdoi: 10.1021/acs.jpcb.7b06398
e-issn: 1520-5207
issn: 1520-6106
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