Thermal fluctuations in the classical superconductor Nb3Sn from high-resolution specific-heat measurements

Rolf Lortz, Yuxing Wang, Alain Junod, Naoki Toyota

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The range of thermal fluctuations in 'classical' bulk superconductors is extremely small and especially in low-fields hardly experimentally accessible. With a new type of calorimeter we were able to detect a tiny lambda anomaly in the specific-heat of the superconductor Nb3Sn within a narrow temperature range around the Hc2 line. We show that the evolution of the anomaly as a function of magnetic field follows scaling laws expected in the presence of critical thermal fluctuations.

Original languageEnglish
Pages (from-to)149-151
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume460-462 I
Issue numberSPEC. ISS.
Publication statusPublished - 2007 Sep 1


  • Classical superconductor
  • NbSn
  • Specific-heat
  • Thermal fluctuations

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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