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Evidence for a two component magnetic response in UPt3

Yaouanc1, Dalmas De Reotier P, Gygax

  • 1Commissariat a l'Energie Atomique, Departement de Recherche Fondamentale sur la Matiere Condensee, F-38054 Grenoble Cedex 9, France.

Physical Review Letters
|October 4, 2000
PubMed
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Muon Knight shift studies reveal heavy fermion superconductor UPt3 exhibits a two-component magnetic response. This magnetic behavior shows a distinct temperature dependence, particularly around T(N), indicating complex electronic interactions.

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Superconductivity

Background:

  • Heavy fermion superconductors like UPt3 exhibit complex electronic properties.
  • Understanding the microscopic magnetic response is crucial for elucidating superconductivity mechanisms.

Purpose of the Study:

  • To investigate the microscopic magnetic response of the heavy fermion superconductor UPt3.
  • To characterize the nature of magnetic interactions within UPt3 using muon Knight shift measurements.

Main Methods:

  • Muon Knight shift studies were performed on UPt3.
  • Measurements were conducted to analyze the magnetic response on a microscopic scale.

Main Results:

  • Two distinct and isotropic Knight shifts were observed for magnetic fields applied in the basal plane.

Related Experiment Videos

  • The volume fractions of these shifts exhibited a dramatic and opposite temperature dependence around T(N).
  • Results were independent of specific muon localization sites.

    • Conclusions:

    • UPt3 displays a two-component magnetic response.
    • The observed temperature dependence suggests intricate magnetic ordering or fluctuations influencing superconductivity.