Reentrant softening in perovskitelike superconductors

A model--reentrant elastic softening--achieves three useful results. First, and principally, it reconciles existing sound-velocity--elastic-constant measurements with thermodynamics. Second, it leads to Debye characteristic temperatures that agree with those from specific-heat and phonon density-of-...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1988-05, Vol.37 (13), p.7502-7505
Main Authors: DATTA, T, LEDBETTER, H. M, VIOLET, C. E, ALMASAN, C, ESTRADA, J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:A model--reentrant elastic softening--achieves three useful results. First, and principally, it reconciles existing sound-velocity--elastic-constant measurements with thermodynamics. Second, it leads to Debye characteristic temperatures that agree with those from specific-heat and phonon density-of-states determinations. Third, it links elastic-constant-temperature behavior in Y--Ba--Cu--O and La--Sr--Cu--O. The model predicts a superconducting-state elastic stiffness lower than the normal state. 34 ref.--AA
ISSN:0163-1829
1095-3795
DOI:10.1103/physrevb.37.7502