Current-temperature diagram of resistive states in long superconducting YBa 2Cu 3O 7 strips

K. Harrabi, F. R. Ladan, Vu Dinh Lam, J. P. Maneval*, J. F. Hamet, J. C. Villégier, R. W. Bland

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Using a sequence of stepped bias currents in the nanosecond range, we have studied the destruction of superconductivity in c-axis textured YBa 2Cu 3O 7 strips of various thickness and structure (single or multi-layers). Sufficiently far from T c, vortex flow fades out and gradually gives way to localized dissipative structures, which can be interpreted either as Phase-Slip Centers (PSC) or normal Hot Spots (HS). A plot of the corresponding threshold currents in the current - temperature (I - T) plane indicates when each of them will occur, and how to switch over from one to the other, in a manner similar to that demonstrated for metallic materials (cf. Ladan et al., J. Low Temp. Phys. 153:103, 2008). The capability of some YBCO strips to support PSC's at arbitrarily low temperatures escapes the common picture.

Original languageEnglish
Pages (from-to)36-56
Number of pages21
JournalJournal of Low Temperature Physics
Issue number1-2
StatePublished - 2009
Externally publishedYes


  • Critical currents
  • High-T films
  • Phase-slip centers
  • Phonon escape

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (all)
  • Condensed Matter Physics


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