Visualization of the reconstruction of a silver film on silicon

In this investigation the focusing of medium-energy electrons is used to visualize the thermally activated reconstruction of a thin film of silver (6 monolayers) deposited on a Si(111) 7×7 surface at room temperature. It is shown that the initial unannealed film consists of Ag(111) domains of two types, mutually misoriented in azimuth by 180°. When the sample is heated to 350–400°C, the film recrystallizes and a single-domain epitaxial layer of Ag(111) is formed.

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