Correlation between structure and magnetic transport mechanisms in YBCO films

G. Ghigo, A. Chiodoni, R. Gerbaldo, L. Gozzelino, B. Minetti, E. Mezzetti, C. Camerlingo, C. Giannini, L. Tapfer, S. Martelli

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Abstract

This paper studies the striking correlation between nanosized structural patterns in YBCO films and macroscopic transport current. A nanosized network of parallel Josephson junctions laced by insulating dislocations is almost mimicking the grain boundary structural network. It contributes to the macroscopic properties and accounts for the strong intergranular pinning across the film in the intermediate temperature range. The correlation between the two networks enables to find out an outstanding scaling law in the (Jc,B) plane and to determine meaningful parameters concerning the matching between the vortex lattice and the intergranular defect lattice. Two asymptotic behaviors of the pinning force below the flux flow regime are checked: the corresponding vortex phases are clearly individuated.
Original languageEnglish
Pages (from-to)2773 - 2778
Number of pages6
JournalInternational Journal of Modern Physics B
Volume14
Issue number25-27
DOIs
Publication statusPublished - 30 Oct 2000
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Cite this

Ghigo, G., Chiodoni, A., Gerbaldo, R., Gozzelino, L., Minetti, B., Mezzetti, E., ... Martelli, S. (2000). Correlation between structure and magnetic transport mechanisms in YBCO films. International Journal of Modern Physics B, 14(25-27), 2773 - 2778. https://doi.org/10.1142/S0217979200002880