Abstract
The angular dependence of the Azbel'-Kaner cyclotron resonance peaks in lead is analyzed in terms of Shockley's formula. All of the anisotropies in the cyclotron resonance peaks originating from the 〈110〉 cylindrical arms of the Fermi surface measured in the four parallel field geometries by Ônuki et al. [ J. Phys. Chem. Solids 38, 419 (1977)] are shown to be characterized by the set of the effective masses ( m 1, m 2, m 3) = (1.18, 0.244, −8.71) m along the crystal directions ([001], [110], [110]) and their equivalents. This means that the cyclotronic motion in the {110} planes is electron-like and its orbits are elliptic in k-space characterized by masses ( m 1, m 2) while the heli-axial motion is hole-like. The physical origins of this unusual behavior are discussed in direct-lattice space.
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