Abstract
The deposition of Co on Cu(111) at room temperature gives rise to the appearance of monoatomically-high, laterally extended holes, as well as room temperature motion of surface features, which is observed in real time by a scanning tunneling microscope. The holes are produced by a spontaneous surface etching process related to the formation of a surface alloy which, in turn, produces an enhancement of the surface diffusion. As a result of these phenomena there is a noticeable and unexpected mass transport at the surface during growth. We illustrate how these processes have an impact on the growth mode of Co on Cu(111).
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