Calculation of Stopping Powers in Ordered Ultrathin Films

摘要

An unsupported ordered ultrathin combines periodicity on a crystalline scale in two dimensions with thickness of roughly molecular scale in the third. Since such ultrathin films are the obvious limiting case of overlayers in nanoscale technologies, the a priori characterization of layer structure and properties is clearly of growing practical importance as well as an intellectual challenge. In particular, one wants to know the distinction between the behavior of the ultrathin film and the counterpart bulk crystal. One clear distinction is the quantum interference effects which are the direct result of the multiple, atomic lengthscales present in the layer and not in the infinite crystal. Thin films; Reprints. (jes)