The electron-phonon interaction is strongly modified in conductors with a s
mall value of the electron mean free path (impure metals, thin films). As a
result, the temperature dependencies of both the inelastic electron scatte
ring rate and resistivity differ significantly from those for pure bulk mat
erials. Recent complex measurements have shown that modified dependencies a
re well described at T greater than or equal to 10 K by the electron intera
ction with transverse phonons. At helium temperatures, available data are c
onflicting, and cannot be described by an universal model. (C) 1999 Elsevie
r Science B.V. All rights reserved.