Peak Effect in CeRu2: Role of Crystalline Defects

Masato Hedo, Yoshihiko Kobayashi, Yoshihiko Inada, Etsuji Yamamoto, Yoshinori Haga, Jun Ichi Suzuki, Naoto Metoki, Yoshichika Onuki, Hitoshi Sugawara, Hideyuki Sato, Kenichi Tenya, Takashi Tayama, Hiroshi Amitsuka, Toshiro Sakakibara

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We measured the electrical resistivity in magnetic fields and the Hall voltage to understand the peak effect in a superconductor with the cubic structure CeRu2. Two samples with residual resistivity ratios of ρRT0 = 240 and 12 were prepared, and the experimental results in the superconducting mixed state were compared between them. The flux flow begins at a high field and the peak effect is observed in a very narrow window in the T vs. H phase diagram near the upper critical field Hc2 for the sample with ρRT0 = 240, while it starts at a lower field and the window where the peak effect is observed becomes wider for the sample with ρRT/ρ0 = 12. These characteristic features are mainly related to crystalline defects in the sample.

Original languageEnglish
Pages (from-to)3561-3569
Number of pages9
Journaljournal of the physical society of japan
Issue number10
Publication statusPublished - Oct 1998
Externally publishedYes


  • CeRu
  • Flux flow
  • Peak effect

ASJC Scopus subject areas

  • General Physics and Astronomy


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