Tests for Nonreciprocal Optical Effects in High-Temperature Superconductors

  • A. Kapitulnik
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 113)


The existance of spontanous polar Kerr effect and Faraday effect in High-Tc films and crystals was tested using a Sagnac interferometer. Observation of these effects would be a strong evidence that the superconductivity in the cuprates is described by a theory that predicts broken time-reversal symmetry. No evidense of either polar Kerr rotation or Faraday effects were found when the data was analyzed for both a spatially fluctuating component (anticipating domains) and an absolute offset. The measurements were done with averaged sensitivity of less than 3μrad.


YBCO Film Faraday Effect Cold Finger Loop Coupler Muon Spin Relaxation 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1993

Authors and Affiliations

  • A. Kapitulnik
    • 1
  1. 1.Department of Applied PhysicsStanford UniversityStanfordUSA

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