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The adsorption and reaction of acetylene dosed on the Si(111)-(7×7) surface has been studied by means of X-ray photoemission, Auger, and HREELS spectroscopies for different substrate temperatures. For exposure at temperature of 600°C, only an extremely thin reacted layer can be obtained, which hinders further molecular reaction at the surface, acting as a barrier layer. The increase in surface diffusion...
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