Microwave measurements on the heavy fermion superconductors UPt3 and UBe13

S. W. Lin*, C. T. Lin, D. Wu, Bimal K. Sarma, G. R. Stewar, John B Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The complex microwave impedance at ∼11.5 GHz was measured in the superconducting state of two well characterized heavy fermion single crystals, UPt3 and UBe13. This microwave photon energy is about 30% and 20% of the zero-temperature energy gap, respectively, and is higher than previous measurements. The results for UBe13 seem to be well described by the Mattis-Bardeen theory in the dirty-limit for a conventional superconductor. However, the behavior in UPt3 deviates from this conventional theory even when paramagnetic impurity scattering effects are taken into account.

Original languageEnglish (US)
Pages (from-to)629-634
Number of pages6
JournalJournal of Low Temperature Physics
Volume101
Issue number3-4
DOIs
StatePublished - Nov 1 1995

Keywords

  • 74.20.Fg.
  • 74.25.Nf
  • 74.70.Tx

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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