Scaling spontaneous fluctuations in high-Tc superconductor films

L. B. Kiss, P. Svedlindh, L. Lundgren, J. Hudner, H. Ohlsén, L. Stolt, Z. Gingl

Research output: Article

9 Citations (Scopus)


Spontaneous conductivity fluctuations in high-Tc superconducting films on sapphire and SrTiO3 substrates have been measured through the superconducting transition. It is found that the normalized spectrum for the sapphire film is two orders of magnitude larger than for the SrTiO3 film, due to a stronger disorder. At sufficiently low temperatures, the normalized spectrum scales with the conductivity, which proves the existence of a percolation superconducting network.

Original languageEnglish
Pages (from-to)441-444
Number of pages4
JournalPhysica B: Physics of Condensed Matter
Issue number4
Publication statusPublished - júl. 1991

ASJC Scopus subject areas

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

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    Kiss, L. B., Svedlindh, P., Lundgren, L., Hudner, J., Ohlsén, H., Stolt, L., & Gingl, Z. (1991). Scaling spontaneous fluctuations in high-Tc superconductor films. Physica B: Physics of Condensed Matter, 172(4), 441-444.