Weak Ferromagnetism in Superconducting ErNi2B2C

  • H. Kawano-Furukawa
Part of the NATO Science Series book series (NAII, volume 14)

Abstract

We review our recent studies on ErNi2B2C, in which a microscopic coexistence of weak ferromagnetism (WFM) and superconductivity was confirmed for the first time by polarized neutron diffraction measurements. A detailed spin arrangement of ferromagnetic (FM) components is also discussed based on the results of unpolarized neutron diffraction experiments. Furthermore, we found that a temperature dependence of the lower critical field H Cr shows a clear upturn at the WFM ordering temperature, which indicates a cooperative interplay between FM and superconductivity. Finally, we shall discuss a possibility of a realization of a spontaneous vortex phase in this system.

Keywords

Vortex Anisotropy Nitrides 

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Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • H. Kawano-Furukawa
    • 1
    • 2
  1. 1.Department of PhysicsOchanomizu UniversityBunkyo-kuJapan
  2. 2.PRESTOJapan Science and Technology CorporationKawaguchiJapan

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