Low-Temperature Properties of a Superconducting Disordered Metal

Specific heat C/sub p/ and thermal conductivity kappa measurements between 0.1 and 10 K on the superconducting (T/sub c/ = 2.53 K) and structurally disordered metal Zr/sub 0.7/Pd/sub 0.3/ exhibit an approximately linear term in C/sub p/ and a T/sup 1.9/ dependence of kappa below T/sub c/. The magnit...

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Veröffentlicht in:Phys. Rev. Lett.; (United States) 1977-12, Vol.39 (23), p.1480-1483
Hauptverfasser: Graebner, John E., Golding, Brage, Schutz, R. J., Hsu, F. S. L., Chen, H. S.
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Sprache:eng
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Zusammenfassung:Specific heat C/sub p/ and thermal conductivity kappa measurements between 0.1 and 10 K on the superconducting (T/sub c/ = 2.53 K) and structurally disordered metal Zr/sub 0.7/Pd/sub 0.3/ exhibit an approximately linear term in C/sub p/ and a T/sup 1.9/ dependence of kappa below T/sub c/. The magnitudes of these terms are close to those found for insulating glasses, thereby suggesting that disorder-induced localized excitations exist at similar densities in very different classes of disordered solids.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.39.1480