Coherence length in deoxygenated (1 0 3)/(0 1 3) oriented YBCO superconductor films

Carlo Camerlingo, Grzegorz Jung

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The coherence length ξc along c-axis direction in (1 0 3)/(0 1 3) oriented YBCO superconductor thin films has been evaluated from the temperature dependence of current-voltage (I-V) characteristics of micro-bridges in the framework of a model taking in account thermally activated magnetic flux creep in the intrinsic potential of the layered structure of the superconductor. The coherence length gradually increased from the initial value ξc = 0.14 nm to ξc = 0.33 nm in the sample subjected to subsequent annealing steps performed in air at increasing temperatures from a range Ta = 190-275 °C. Structural modifications of deoxygenated samples were monitored by micro-Raman spectroscopy. The critical temperature Tc slightly increases after the initial annealing steps while a significant Tc decrease has been observed after Ta = 275 °C stage accompanied by appearance of the tetragonal phase in the crystal structure.

Original languageEnglish
Pages (from-to)805-806
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume460-462 II
Issue numberSPEC. ISS.
StatePublished - 1 Sep 2007


  • Coherence length
  • Micro-Raman spectroscopy
  • YBCO films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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