Conductibilité électrique des lames minces anisotropes

Abstract
In thin metallic films the effective free path of the conduction electrons is shortened by collisions with the surfaces of the film and, when the thickness is small compared with the bulk free path, the current is carried mainly by electrons which move nearly parallel to the surface. As a consequence, when the orientation of the crystal axes relative to the surface is varied in single crystal films, different groups of electrons corresponding to different regions of the Fermi surface become prominent in determining the resistance, and the resistance may therefore be expected to show a much greater varietyof anisotropic behaviour than is observed in the bulk metal. It is suggested that measurements of the anisotropy of the resistance of single crystal films may provide useful information about the shape of the Fermi surface in metals.