Date of Original Version
Quasiclassical interference between bulk and boundary scattering channels in thin metal films with rough surfaces is discussed. The effective transport time, which is calculated beyond Mathiessen’s approximation, exhibits a nonanalytical dependence on the bulk relaxation time. Interference effects strongly affect the temperature (phonon scattering in the bulk) or concentration (impurity-scattering) dependencies of the conductivity. The results for large bulk free paths ℒb and large correlation radii (lateral sizes) R of surface inhomogeneities are described by simple analytical equations. At R2∼aℒb we predict a crossover between two asymptotic regimes for interference contributions that are characterized by distinct temperature/concentration dependencies. Experimental implications of our results are discussed.
S. Chattejee, A.E. Meyerovich. Interference between bulk and boundary scattering in high quality films. Phys. Rev. B, 81, 245409 1-10 (2010). Available at: http://dx.doi.org/10.1103/PhysRevB.81.245409