Fermi Surface of Calcium by the de Haas-van Alphen Effect

The de Haas-van Alphen effect of calcium has been studied by the torsion method in fields to 33 kG. The three periodicities of 3.05, 0.77, and 0.57 (${10}^{-7\mathrm{}}$ ${\mathrm{G}}^{-1\mathrm{}}$) that were observed had cyclotron masses of ${0.3}_5$, ${0.6}_5$, and ${0.6}_5{m}_0$, respectively, and imply areas of orbits that are in agreement with a Few-OPW model with small lattice potentials, $V_{200}={0.034}_5$ Ry and $V_{111}={0.01}_4$ Ry. The experimentally-determined cyclotron masses are nearly twice those given by the model.