Vortex contribution to the excess noise in superconducting transition

Fulin Zuo, Hengsong Zhang

Research output: Contribution to journalArticlepeer-review


We report voltage noise studies on thin tin films in the superconducting transition region to understand the mechanism of the excess noises observed in the transition. Temperature and I-V characteristics studies suggest evidence of a Kosterlitz-Thouless transition for the thin Sn films studied. A correlation of the onset of rapid increases of noise with the power law in I-V points to the dominant vortex contribution to the excess noises, consistent with the characteristic \sqrt{V} dependence of the spectral power of the noise.

Original languageEnglish (US)
Pages (from-to)1039-1041
Number of pages3
JournalJournal of Superconductivity and Novel Magnetism
Issue number6
StatePublished - Aug 2010


  • Nonlinear current-voltage dependence
  • Superconducting transition
  • Voltage noises

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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