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

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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


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