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Ring-shaped vortex domain in type-II superconductors.

A Gröger1, A Böhm, U Beyer

  • 1Grenoble High Magnetic Field Laboratory, Max-Planck-Insitut für Festkörperforschung and Centre National de la Recherche Scientifique, 25 rue des Martyrs, F-38042 Grenoble Cedex 9, France.

Physical Review Letters
|July 15, 2003
PubMed
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We demonstrate the creation of stable, ring-shaped vortex domains in superconducting niobium using heating. These vortex rings can persist indefinitely when anchored by structural defects.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Superconductivity

Background:

  • Superconducting materials exhibit unique quantum phenomena.
  • Vortex dynamics in superconductors are crucial for understanding their behavior.

Purpose of the Study:

  • To investigate the creation of metastable vortex domains in superconducting niobium.
  • To explore the long-term stability of these vortex structures.

Main Methods:

  • Experimental heating of superconducting niobium.
  • Numerical simulations of vortex dynamics.
  • Analysis of vortex ring formation and pinning.

Main Results:

  • Successful creation of ring-shaped vortex domains.

Related Experiment Videos

  • Demonstration of metastability through heating.
  • Observation of indefinite vortex ring existence when pinned by defects.

    • Conclusions:

    • Metastable ring-shaped vortex domains can be reliably created in niobium.
    • Structural defects are key to the permanent pinning of these vortex structures.
    • This finding has implications for superconducting device stability and design.