Temperature dependence of flux creep in high-Tc superconductors

Takanori Fujiyoshi, Kiyoshi Toko, Teruo Matsushita, Kaoru Yamafuji

Research output: Contribution to journalArticlepeer-review


The normalized decay rate R of magnetization due to thermally activated flux creep is typically given by R≃kBT/Uc, where kB is the Boltzmann constant, T is the absolute temperature and Uc is the effective pinning potential. Some observed data for high-Tc superconductors show that R increases with increasing T, while in other studies, R takes a peak at a certain temperature Tm below the critical temperature Tc, where Tm decreases with increasing external magnetic field. These temperature dependences of R are explained systematically on the basis of a recent theory of flux creep developed by the authors.

Original languageEnglish
Pages (from-to)L1906-L1908
JournalJapanese Journal of Applied Physics
Issue number11 A
Publication statusPublished - Nov 1989

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)


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