TWO-COMPONENT ALLOY MODEL FOR BISMUTHATE CERAMICS
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Published:1996-06-20
Issue:14
Volume:10
Page:627-633
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ISSN:0217-9849
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Container-title:Modern Physics Letters B
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language:en
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Short-container-title:Mod. Phys. Lett. B
Affiliation:
1. Bogolubov Theoretical Laboratory, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
Abstract
The disordered binary substitutional A 1−x B x alloy model has been proposed for the description of the normal and superconducting properties of bismuthate ceramics Ba(Pb,Bi)O 3. The Eliashberg-type equations for the strong coupling superconductivity in strongly disordered alloys have been used to describe the superconducting properties. The relevant configurational averaging has been performed in the framework of CPA. The concentration dependence of electron-phonon coupling constant λ(x) and transition temperature Tc(x) has been calculated.
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics