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Direct comparison of scanning tunneling microscopy (STM) and high-resolution core level photo-emission experiments provides a rationale for the mechanism of short range ordering in a two-dimensional (2D) binary alloy (1/3 monolayer (ML) Sn (1-x) Si x /Si(111)-(√3x√3)R30 o ). The host pure Sn metal surface (x=0) results partitioned into two classes (2/9 and...
The morphology and atomic structure of a vicinal surface of Fe 3 Al(111) has been studied by thermal energy helium atom scattering and scanning tunneling microscopy. The second order B2->DO 3 structural phase transition in the chemically ordered alloy induces a morphological transition at its surface: single-height steps, which are evenly distributed above the bulk critical temperature...
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