Microwave surface impedance measurements on the heavy fermion superconductor UPt3

C. T. Lin, Bimal K. Sarma, J. B. Ketterson

Research output: Contribution to journalArticlepeer-review


We have used cavity perturbation techniques to study the microwave surface impedance of the heavy fermion intermetalic compound UPt3 in the superconducting and normal states. The surface impedance as a function of temperature was measured in the frequency range from ∼ 9 to 38 GHz. These microwave photon energies are about 20% to 95% of the estimated zero-temperature energy gap of UPt3. A change of slope was observed in the resistance vs. temperature curves at Tc. No evidence for a collective mode was observed for all the frequencies down to the lowest temperature reached ( ∼ 0.1 K).

Original languageEnglish (US)
Pages (from-to)654-655
Number of pages2
JournalPhysica B: Condensed Matter
StatePublished - 1999


  • Microwave
  • Superconductor
  • UPt

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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