Resistivity and electron-phonon interaction in Li

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Abstract
In Li, at high temperature, the constant volume resistivity becomes larger than the zero (atmospheric) pressure value. This is contrary to what is observed in the other alkalis. It has been suggested that it is a result of an increase in the distortions of the lithium Fermi surface with application of hydrostatic pressure. We show that the effect can be understood much more simply and naturally on the basis of a spherical Fermi surface and a simple electron-ion pseudopotential form factor. The form factor is used to evaluate the absolute value and the volume dependence of the thermoelectric power. the thermal conductivity and the electron-phonon mass renormalization.