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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/058/05-06/0925-0935

    • Keywords

       

      Peak effect; vortex phase diagram; order to disorder transformation; 2H-NbSe2

    • Abstract

       

      The weakly pinned single crystals of the hexagonal 2H-NbSe2 compound have emerged as prototypes for determining and characterizing the phase boundaries of the possible order-disorder transformations in the vortex matter. We present here a status report based on the ac and dc magnetization measurements of the peak effect phenomenon in three crystals of 2H-NbSe2, in which the critical current densities vary over two orders of magnitude. We sketch the generic vortex phase diagram of a weakly pinned superconductor, which also utilizes theoretical proposals. We also establish the connection between the metastability effects and pinning.

    • Author Affiliations

       

      CV Tomy1 D Pal2 SS Banerjee2 3 S Ramakrishnan2 AK Grover2 S Bhattacharya2 4 MJ Higgins4 G Balakrishnan5 McK Paul5

      1. Department of Physics, Indian Institute of Technology, Powai, Mumbai - 400 076, India
      2. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai - 400 005, India
      3. Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot - 76100, Israel
      4. N.E.C. Research Institute, 4 Independence Way, Princeton, New Jersey - 08540, USA
      5. Department of Physics, University of Warwick, Coventry - CV4 7AL, UK

    • Dates

       
      Published
      6 May 2002

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