6 N ov 1 99 9 Electrical resistivity of a thin metallic film
نویسنده
چکیده
The electrical resistivity of a pure sample of a thin metallic film is found to depend on the boundary conditions. This conclusion is supported by a freeelectron model calculation and confirmed by an ab initio relativistic KorringaKohn-Rostoker computation. The low-temperature resistivity is found to be zero for a free-standing film (reflecting boundary conditions) but nonzero when the film is sandwiched between two semi-infinite samples of the same material (outgoing boundary conditions). In the latter case, this resistivity scales inversely with the number of monolayers and is due to the background diffusive scattering by a finite lattice. Typeset using REVTEX
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