Colloque sur les Structures Métalliques Désordonnées / Disordered Metallic Systems

J. Phys. Colloques 35 (1974) C4-81-C4-84
DOI: 10.1051/jphyscol:1974413

THE COHERENT POTENTIAL APPROXIMATION FOR A CLUSTER OF NON-OVERLAPPING SCATTERERS

D. HOUSE, B. L. GYORFFY and G. M. STOCKS

H. H. Wills Physics Laboratory, Royal Fort, Bristol, U.K.

Résumé
Nous prétendons qu'une façon raisonnable d'étendre aux alliages les précédents calculs de "cluster" sur la densité d'états "d" de métaux purs est d'effectuer un calcul C.P.A. pour un "amas" de puits de potentiel muffin-tin sans recouvrement. Nous démontrons l'utilité de cette méthode par des calculs explicites sur les systèmes Ni-Cu et Cu-Zn.

Abstract
We argue that a reasonable way of extending earlier cluster calculations of the density of states for pure d-band metals to their alloys is to do a C.P.A. calculation for a cluster of non-overlapping muffin tin wells. We demonstrate the feasibility and the power of the method by explicit calculations on Ni-Cu and Cu-Zn systems.

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