Abstract

In considering the α-CU₁₀₀₋ₓGeₓ alloys on the basis of a realistic muffin-tin Hamiltonian, the most notable feature of the electronic spectra is found to be the appearance of an impurity band below the host conduction band. In accord with relevant experiments, a Fermi surface is predicted to grow at approximately half the rigid-band rate for x5 at.% Ge. This effect is related to a transition in the nature of states associated with the impurity band; these states are localized atomic s-like states for x≤0.5 and become delocalized in concentrated alloys.

Notes

Originally published in Physical Review Letters v.48 (1982): 113-116. DOI: 10.1103/PhysRevLett.48.113

Keywords

muffin-tin Hamiltonian, alpha phase copper germanium alloys, α-CU₁₀₀₋ₓGeₓ

Subject Categories

Fermi surfaces, Alloys

Disciplines

Physics

Publisher

American Physical Society

Publication Date

1-11-1982

Rights Information

Copyright 1982 American Physical Society.

Rights Holder

American Physical Society

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