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The impingement and interdiffusion of adsorbed Pb and Bi layers spreading from separated 3D pure bulk sources on Cu(100) has been studied, at T=513K, by in situ scanning Auger microscopy. When the leading edges of the pure Pb and Bi diffusion profiles impinge, they both consist of low-coverage lattice gas surface alloyed phases. In these low-coverage phases, Pb displaces surface alloyed Bi and the...
Scanning tunneling microscopy (STM) has been used to study the various possible structures of adsorbed Bi on the Cu(100) surface, after equilibration at a temperature of 520K. All of the structures previously identified by X-ray diffraction (lattice gas, c(2×2), c(9√2×√2)R45°, and p(10×10), in order of increasing Bi-coverage) were found to be present on a single sample produced by diffusing Bi onto...
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