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Antiferromagnetism and the node structure of the superconducting order parameter of UPd \(\)Al \(\)

  • M. Huth
  • M. Jourdan
  • H. Adrian

Abstract:

The node structure of the superconducting order parameter of the heavy-fermion system \(\) is analyzed within the weak-coupling theory. A pairing interaction induced by the exchange of antiferromagnetic spin excitations is assumed as suggested by recent inelastic neutron scattering experiments and tunneling spectroscopy. The multi-sheeted Fermi surface is taken into account. Based on a model susceptibility for the simple antiferromagnetic structure of \(\), line nodes result at the rim of the magnetic Brillouin zone.

PACS. 74.70.Tx Heavy-fermion superconductors - 74.20.Mn Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.) - 74.50.+r Proximity effects, weak links, tunneling phenomena, and Josephson effects 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • M. Huth
    • 1
  • M. Jourdan
    • 1
  • H. Adrian
    • 1
  1. 1.Institute for Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, GermanyDE

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