Elucidation of the stable vortex state across the peak effect region in CeRu2

A. A. Tulapurkar, D. Heidarian, S. Sarkar, S. Ramakrishnan, A. K. Grover, E. Yamamoto, Y. Haga, M. Hedo, Y. Inada, Y. Onuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We present magnetization data on a weakly pinned single crystal of CeRu2, showing the existence of a stable state of the vortex matter in the peak effect (PE) region. The stable state is achieved by cycling the magnetic field by a small amplitude. It is characterized by a unique value of the critical current density, independent of the magnetic history of the sample. The results support a recent phenomenological model proposed by Ravikumar et al. [Phys. Rev. B 61 (2000) R6479] which postulates a specific recipe to incorporate the history dependence of the current density. Our data also shows the occurrence of a first order phase transition from an ordered vortex phase to a disordered phase across the PE.

Original languageEnglish
Pages (from-to)59-64
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number1-2
Publication statusPublished - Jun 1 2001
Externally publishedYes


  • CeRu
  • Peak effect
  • Stable vortex state
  • Step change in equilibrium magnetization

ASJC Scopus subject areas

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


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