Abstract
AbstractGeneral expressions for the electron and phonon energy shift and widths are derived with the help of the double time temperature dependent Green's function by using a Hamiltonian which includes both anharmonicity and electron‐phonon interaction. The expression for the phonon width shows that Green's function technique provides an understanding of Matthiessen's rule. Well known temperature dependence of the electron and the phonon relaxation times is reproduced by a simple calculation of the electron and the phonon widths at low and high temperature limits. It is found that the effect of anharmonicity on the electronic transport properties of metals is negligible. Its effect on the lattice transport properties is predominant at high temperature and at low temperature the effect of electron‐phonon interaction is predominant.
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