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Journal of Low Temperature Physics

, Volume 26, Issue 1–2, pp 265–275 | Cite as

Electron mean free path dependence of the critical currents and the pair-breaking limit in superconducting films

  • N. Fedorov
  • L. Rinderer
Article

Abstract

We have studied the current-induced breakdown of superconductivity in wide (100–980 µm) and thin (0.25–0.98 µm) films of tin. It is shown that the current at which the resistance of the sample begins to rise rapidly in the process of the destruction of superconductivity by a current can be fairly well associated with the theoretical value of the pair-breaking current in the Ginzburg—Landau phenomenological approach (I c GL ). This effect is observed over a rather wide temperature region (up to ΔT ∼ 0.7 K), depending on the electron mean free path in the films. The values of the critical currents outside the above-mentioned region correlate qualitatively with those determined by inhomogeneities of the films as proposed by Larkin and Ovchinnikov.

Keywords

Temperature Region Magnetic Material Free Path Critical Current Path Dependence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • N. Fedorov
    • 1
  • L. Rinderer
    • 1
  1. 1.Institut de Physique Expérimentale de l'Université de LausanneLausanneSwitzerland

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