Electron momentum density in a model substitutionally disordered alloy
- 28 May 1978
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 11 (10) , 2001-2007
- https://doi.org/10.1088/0022-3719/11/10/010
Abstract
The electron momentum density is obtained, in the coherent potential approximation, for a substitutionally disordered binary alloy. The Hamiltonian of the single-band alloy is assumed to have, in the tight-binding representation, no off-diagonal disorder. The occupancies of the Bloch states, of the reference ordered Hamiltonian, are numerically evaluated for a BCC lattice with the off-diagonal part of the Hamiltonian having only nearest-neighbour-overlap terms. The results are presented for k along (100) and (111) directions.Keywords
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