Anomaly of Magnetization in the Superconducting Mixed State of UPt3

Kenichi Tenya, Masataka Ikeda, Takashi Tayama, Hiroyuki Mitamura, Hiroshi Amitsuka, Toshiro Sakakibara, Kunihiko Maezawa, Noriaki Kimura, Rikio Settai, Yoshichika Onuki

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23 Citations (Scopus)


Magnetization curves of UPt3 along the c-axis were measured at low temperatures down to 80 mK. Below 350 mK a peak of the irreversible magnetization was found just below the superconducting upper critical field Hzl. However, the peak disappeared above 390 mK, which is much lower than the superconducting critical temperature of 580 mK, suggesting an unconventional mechanism of the flux pinning near Ha, No distinct anomaly was observed in the magnetization curves at the phase transition between B and C superconducting phases.

Original languageEnglish
Pages (from-to)1063-1066
Number of pages4
JournalJournal of the Physical Society of Japan
Issue number4
Publication statusPublished - 1995


  • dc magnetization measurement
  • superconductivity
  • UPt


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