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The growth and structure of Pd alloys formed on Cu(100) have been studied from the initial nucleation to the formation of a second-layer structure, using scanning tunneling microscopy (STM) and Rutherford backscattering spectroscopy (RES). The STM images show that individual Pd atoms initially alloy into lattice sites of the substrate, with a preference for occupation of second-nearest neighbor (NN)...
The nature of the metal-metal interactions in a series of Pd/Rh(111) surfaces has been examined using thermal desorption mass spectroscopy, core- and valence-level photoemission, CO chemisorption, and ab initio self-consistent field calculations. A monolayer of Pd supported on Rh(111) exhibits a Pd 3d 5/2 binding energy ∼ 0.2 eV higher than that of the surface atoms of Pd(100), and...
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