Impurity scattering time in aluminum

Thomas R. Werner, Charles M Falco, Ivan K. Schuller

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Abstract

Using Gorkov's extension of the Ginzburg-Landau equations, we derive a formula for determining the impurity scattering time for a metal in the normal state in terms of the critical current density and transition temperature of the metal in the superconducting state. When we apply this formula to aluminum weak-link data, we find that the impurity scattering time varies by three orders of magnitude in going from clean to granular aluminum films. This corresponds quite well to impurity scattering times obtained directly from resistivity measurements of the films using the classical Drude-model formula.

Original languageEnglish (US)
Pages (from-to)4510-4514
Number of pages5
JournalPhysical Review B
Volume25
Issue number7
DOIs
Publication statusPublished - 1982
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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