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Magneto-optical observation of twisted vortices in type-II superconductors.

Author(s) : INDENBOM M. V., BEEK C. J. van der, BERSETH V., BENOIT W., ANNA G. d', ERB A., WALKER E., FLUEKIGER R.

Type of article: Article

Summary

The authors report magneto-optical images of YBCO samples in the force-free configuration which show that thousands of vortex lines can twist together to form highly stable structures. In some cases, the "vortex twisters" interact with one another to produce wave-like dynamics. The measurements also determine directly the current required to initiate vortex cutting, and show that it is much higher than that needed to overcome the pinning of vortices by material defects. This implies that thermodynamic phases of entangled vortices are intrinsically stable and may occupy a significant portion of the mixed phase diagram for type-II superconductors.

Details

  • Original title: Magneto-optical observation of twisted vortices in type-II superconductors.
  • Record ID : 1997-3187
  • Languages: English
  • Source: Nature - vol. 385 - n. 6618
  • Publication date: 1997/02/20
  • Document available for consultation in the library of the IIR headquarters only.

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