Relationship among flux depinning, irreversibility and phase transition in a disordered HTS material

T. Kiss, T. Matsushita, F. Irie

Research output: Contribution to journalConference article

28 Citations (Scopus)

Abstract

The influence of flux pinning on the vortex glass-liquid (GL) phase transition and irreversibility in HTSs has been examined on the basis of systematic measurements of electric field (E) versus current density (J) curves in a YBCO thin film. It has been shown that the GL transition is identical to the thermal depinning determined by the minimum value of the macroscopic pinning strength. The isothermal scaling of the E-J characteristics is directly related to the nature of the pinning. The irreversibility line can be described as an iso-J line governed by the statistical pin distribution. If we determine the criteria for the irreversibility line, we can describe the irreversibility line based on the depinning line. The essential physical quantity, therefore, can be attributed to the flux depinning.

Original languageEnglish
Pages (from-to)1079-1082
Number of pages4
JournalSuperconductor Science and Technology
Volume12
Issue number12
DOIs
Publication statusPublished - Dec 1 1999
EventProceedings of the 1999 9th International Workshop on Critical Currents in Superconductors, IWCC9 - Madison, WI, USA
Duration: Jul 7 1999Jul 10 1999

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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