New formulation of the coherent potential approximation for the electrical conductivity of random binary alloys

Papadopoulos, SC

dc.contributor.author	Papadopoulos, SC	en
dc.date.accessioned	2014-03-01T01:06:26Z
dc.date.available	2014-03-01T01:06:26Z
dc.date.issued	1985	en
dc.identifier.issn	0305-4608	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9381
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.title	New formulation of the coherent potential approximation for the electrical conductivity of random binary alloys	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0305-4608/15/3/014	en
heal.identifier.secondary	014	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0305-4608/15/3/014	en
heal.language	English	en
heal.publicationDate	1985	en
heal.abstract	The coherent potential approximation for the electrical conductivity of disordered binary alloys is formulated on the basis of the quantum kinetic equations. The configuration average is denoted by a projection operator. The qualitative properties in the coherent potential approximation for the average density operator ( rho (z)) are examined and compared with those of its exact counterpart. Finally, for the case of a general one-band model of a random binary alloy, the DC electrical conductivity tensor is calculated. This new formulation constitutes a generalisation of a method used for the study of equilibrium properties of random binary alloys without additional assumptions, in contrast to Velicky's work where an additional decoupling approximation is assumed in generalising the CPA idea for the equilibrium properties to that of the transport properties. Furthermore, the new formulation has already been shown to be capable of accommodating the average t-matrix approximation (ATA) scheme.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Physics F: Metal Physics	en
dc.identifier.doi	10.1088/0305-4608/15/3/014	en
dc.identifier.isi	ISI:A1985ACR1600014	en
dc.identifier.volume	15	en
dc.identifier.issue	3	en
dc.identifier.spage	609	en
dc.identifier.epage	624	en