Superconducting vortex dynamics and critical current in mixed pinning landscapes

ORAL

Abstract

The transport properties of type-II superconductors are mostly determined by the dynamics of magnetic flux lines (vortices) threading the system and the material's capability to stop their motion. We provide clear evidence that antagonistic spherical and columnar defects can work hand in hand to provide an optimal pinning landscape for tilted magnetic fields. This establishes a new paradigm of mixed pinning optimization, where the search for optimal vortex pinning must span over a range of defect geometries, sizes, and orientations.

*This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

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Presenters

  • Andreas Glatz

    • Materials Science Division, Argonne National Laboratory
    • Argonne National Lab
    • Argonne Natl Lab

Authors

  • Andreas Glatz

    • Materials Science Division, Argonne National Laboratory
    • Argonne National Lab
    • Argonne Natl Lab

  • Roland Willa

    • KIT

  • Ivan Sadovskyy

    • Microsoft Corp
    • Argonne Natl Lab

  • Alexei Koshelev

    • Argonne Natl Lab
    • Materials Science Division, Argonne National Laboratory
    • Materials Science Division, Argonne Natl Lab
    • Argonne National Lab