Field-history-dependent peak effect in the superconducting mixed state of CeRu2

K. Tenya, S. Yasunami, T. Tayama, H. Amitsuka, T. Sakakibara, M. Hedo, Y. Inada, Y. Haga, E. Yamamoto, Y. Onuki

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Detailed magnetization measurements of CeRu2 single crystals with different purity are performed in order to clarify whether their peak effects are due to the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) transition. The onset field of the peak shifts to lower field side as the sample becomes impure. Regardless of the purity the Ginzburg-Landau parameter κ2 continues to increase on cooling from Tc, indicating little paramagnetic suppression of the superconductivity. These results disagree with the scenario of the FFLO transition.

Original languageEnglish
Pages (from-to)692-693
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - Jan 1 1999
Externally publishedYes


  • Flux pinning
  • Magnetization measurement
  • Peak effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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