Abstract

The scanning tunneling microscope (STM) is an important tool for studying the growth of ultrathin metal structures. The behavior of atoms arriving at the surface determines nanometer-scale structure that is readily measured with the STM. These structural features are important in determining properties. The variety of structural possibilities is illustrated with the difference between substrate-controlled island nucleation of Ni on Au(111) and diffussion-controlled aggregation of Ag on Au(111). The STM also provides a fairly complete picture of the intermixing that occurs in the early stages of room-temperature growth of Fe on Cu(100).

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