Fermi Surface of Magnesium. II: The de Haas—van Alphen Effect

We report here the results of a detailed investigation of the de Haas---van Alphen effect in magnesium. The data were taken for the three major crystallographic planes in magnetic fields extending to 52 kG and at temperatures down to 0.31^∘{}K. The results yield cross-sectional area branches for every sheet of the single-OPW-model Fermi surface (OPW=orthogonalized plane wave). Coupled orbits generated by magnetic breakdown are shown to be responsible for many of the observed area branches. The results are in good qualitative agreement with existing models for the magnesium Fermi surface.