Electron-phonon scattering times in three-dimensional disordered Sb films

Abstract

We have measured the electron-phonon scattering times t(ep) in a series of three-dimensional Sb films having the characteristic of ql similar to 1, where q is the wave number of the thermal phonons, and I is the electron elastic mean free path. We observe that 1/t(ep) similar to T-p, With P approximate to 2.4, in the temperature range 1-14 K. In addition, we find a very weak dependence of 1/t(ep) on l. Our observations are compared with theoretical predictions for electronphonon interactions in the presence of disorder and with previous experimental results in thin Sb films.