Abstract

We consider the Fermi-surface properties of the α-Cu1-cZnc system over the composition range 0≤c≤0.3. Our calculations are based on the application of the self-consistent coherent potential approximation to the muffin-tin Hamiltonian. The predictions of the theory with respect to the radii kneck, k100, and k110, and the size and shape of the alloy Fermi surface in several planes in the Brillouin zone are in good agreement with the available positron annihilation measurements and with the predictions of the rigid-band model. We discuss how the hitherto unmeasured disorder smearing of the alloy Fermi surface may be amenable to a direct experimental determination in concentrated alloys. The dilute impurity limit is considered in detail. The computed changes in areas for several orbits are in good accord with the corresponding results of de Haas-van Alphen experiments. The predicted Dingle temperatures, however, agree with measurements only to within a factor of 2. It is hoped that the present work will encourage further measurements, especially of the disorder smearing of the Fermi surface in concentrated alloys.

Notes

Originally published in Physical Review B v.23 (1981): 2607-2613. DOI: 10.1103/PhysRevB.23.2607

Keywords

Fermi-surface properties, de Haas-van Alphen experiments, Dingle temperatures, α-Cu1-cZnc, muffin-tin Hamiltonian

Subject Categories

Fermi surfaces, Copper alloys, Zinc alloys

Disciplines

Physics

Publisher

American Physical Society

Publication Date

3-15-1981

Rights Information

Copyright 1981 American Physical Society.

Rights Holder

American Physical Society

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