A correlation between magnetoresistance and deviations from Matthiessen's rule in aluminium

Abstract

An analysis of recent experiments on aluminium shows that in a high magnetic field the resistivity has a temperature dependence proportional to T³, similar in form and magnitude to that of an impure sample in zero field, and markedly different from the T⁵ behaviour of pure material in zero field. The idea of momentum nonconservation at electron-phonon collisions, which was introduced to explain the impurity effect, is extended to account for the temperature dependent part of the magnetoresistance.