Anisotropy of the electron-phonon collision frequency on the Fermi surface of silver

Abstract

The anisotropy of the electron-phonon collision frequency on the Fermi surface of silver has been determined from the temperature dependence of radio-frequency-size-effect (RFSE) line amplitudes. In all cases when ln $A$ is plotted vs $T^3$ the expected linear relationship is observed. The average collision frequency for 18 parallel field orbits on the Fermi surface was determined from the temperature dependence of the corresponding RFSE signals. Using these average values in an inversion technique, a functional form for the collision frequency over the Fermi surface was determined. Several different functional forms were assumed in order to determine the best fit to the experimental data. In addition the average collision frequency about five tilted field orbits has been determined. These average values are in reasonable agreement with values calculated from the derived analytic expression of the collision frequency.