Anomalous flux pinning of UPd2Al3

Anju Sawada, Akiko Ishiguro, Yoshihiko Inada, Michiro Suzuki, Noriaki Sato, Takemi Komatsubara

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1 Citation (Scopus)


The ac magnetic susceptibility of UPd2Al3 in the superconducting state has been measured to test of the existence of the Fulde, Ferrell, Larkin and Ovchinnikov (FFLO) state. A dip in the susceptibility has been observed in the vicinity of the upper critical field and the temperature range from zero to Tc. This dip is very sensitive to the amplitude of the ac magnetic field. The anomaly is explained by the increase of the flux pinning effect. Recent theories suggest that the pinning force becomes stronger in the FFLO state, and the existence of the nonuniform state due to the order parameter mixing in a d-wave superconductor is possible near Tc.

Original languageEnglish
Pages (from-to)645-650
Number of pages6
JournalJournal of Low Temperature Physics
Issue number3-4
Publication statusPublished - Nov 1 1995
Externally publishedYes


  • 74.25Ha
  • 74.60Ge
  • 74.70Tx
  • 74.90+n

ASJC Scopus subject areas

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


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