Changes in the Fermi surfaces of zinc and cadmium subjected to uniaxial compression

The changes produced by uniaxial compression in the Fermi surfaces of zinc and cadmium have been measured using a new device for applying the compressive stress. The de Haas-van Alphen effect was used to determine the changes in the smaller extremal orbits, four in zinc and three in cadmium. Where comparison is possible, satisfactory agreement is obtained with other work. One orbit in zinc, whose position on the Fermi surface was formerly uncertain, is more reliably identified from the results.