Aluminum under high pressure. II. Resistivity

The scaled room-temperature resistivity [ρ(p)ρ(p=0)] of crystalline aluminum is calculated as a function of pressure p. Initially the resistivity is determined as a function of volume from the standard variational treatment in which the required electron levels and distortions to the Fermi surface are described in a two-plane-wave model. To obtain the resistivity as a function of pressure, the results of this calculation are combined with a previously computed equation of state aluminum. The calculated scaled resistivity then shows a minimum at a pressure of about 25 GPa. This minimum is largely attributable to the increasing importance of distortions of the actual Fermi surface as pressure increases.