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

Abstract

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}^{\ensuremath{-}7}$${\mathrm{G}}^{\ensuremath{-}1}$) 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.