de Haas-van Alphen effect, LMTO bandstructure and Fermi surface of beta '-AuMg

Abstract

The de Haas-van Alphen effect has been measured in the ordered alloy beta '-AuMg. The relativistic LMTO bandstructure has been calculated and predicts a Fermi surface in good agreement with experiment. Both bandstructure and Fermi surface are similar in those of other beta brasses with the same number of conduction electrons per unit cell, with the exception of an additional set of electron ellipsoids in an extra conduction band, which owe their existence to the relativistic lowering of the Au 6s band.