The g factor of conduction electrons in aluminium: calculation and application to spin resonance

Abstract

Calculates the g factor at every point of the Fermi surface of aluminium by using a classical 'four orthogonalised plane waves' scheme and by introducing the spin-orbit potential as a perturbation. An important difficulty remains, linked to the choice of the wavefunction phase. Moreover a phenomenological model is proposed based on the narrowing of the g distribution by two types of motion: a random one corresponding to the diffusion of electrons on the crystalline imperfections and a coherent one around the cyclotron orbits. A qualitative model accounts relatively well for the spin resonance experiment data.