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Elementary pinning potential in type II superconductors nearH c2

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Abstract

The elementary pinning potential of a small defect in a type II superconductor is calculated near the upper critical magnetic field. The calculation applies at all temperatures and all background impurity contents of the metal. The pinning potential is found to decay according to the inverse impurity parameter when other impurities are added. A very simple formula for the pinning potential is obtained in the Ginzburg-Landau region. The boundary condition to be imposed on a Ginzburg-Landau theory at small defects is derived.

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Authors and Affiliations

  1. Research Institute for Theoretical Physics, University of Helsinki, Helsinki, Finland

    E. V. Thuneberg

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  1. E. V. Thuneberg
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Thuneberg, E.V. Elementary pinning potential in type II superconductors nearH c2 . J Low Temp Phys 57, 415–440 (1984). https://doi.org/10.1007/BF00681201

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  • DOI: https://doi.org/10.1007/BF00681201

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