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Vortex-induced rectification in type II superconductors

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Abstract

We report a large rectification effect in superconducting films in a parallel magnetic field. This rectification effect is manifested in two features in current-voltage characteristics: The critical current, Ic,is found to differ by as much as 40% for negative and positive currents, and beyond Ic,the magnitude of the voltage is different for positive and negative currents, ¦V(+I)¦ ≠ ¦V(−I)¦.Furthermore, the critical current difference ¦Ic+¦ − ¦Ic−¦shows complicated behavior, changing sign as temperature and magnetic field are varied. We discuss a model based on the Bean-Livingston surface barrier and inhomogeneous bulk pinning that accounts for all observed behavior.

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Authors and Affiliations

  1. Center for Superconductivity Research, Department of Physics, University of Maryland, 20742, College Park, Maryland

    Xiuguang Jiang & C. J. Lobb

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  1. Xiuguang Jiang
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  2. C. J. Lobb
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Jiang, X., Lobb, C.J. Vortex-induced rectification in type II superconductors. J Low Temp Phys 100, 515–533 (1995). https://doi.org/10.1007/BF00751523

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  • DOI: https://doi.org/10.1007/BF00751523

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