Unusual chemisorption behavior of Te on Cu{111} versus Cu {100}

Abstract

Surface extended x-ray absorption fine-structure measurements of Te chemisorbed on Cu {111} and Cu {100} surfaces show the adsorbate structures to be remarkably different. Unlike the overlayer occupation of Te in the highest-symmetry hollow sites found here for Cu {100}, the data for Cu {111} indicate substitutional displacement by Te of surface Cu atoms.