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Geometric and electronic structures of adsorbed Sm on Cu(111) were studied by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The surface morphology and Sm valency change with the Sm coverage, suggesting that Sm atoms in the islands have a valence of approximately 2.7 and those diffusing are divalent. Heating the adlayers yields surface alloy and close-packed overlayer...
We have studied the growth of In on W(110) at room temperature using low-energy electron diffraction, photoemission from core-levels and valence states, and thermal desorption. At submonolayer coverage three ordered phases can be clearly resolved. Between 0.2 and 0.3 ML LEED observes a c(3×2) structure rotated by 90° with respect to a c(1×1) substrate unit mesh. With increasing coverage a striped...
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