Pramana

, Volume 66, Issue 1, pp 179–192

Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order—disorder transition in a weakly pinned crystal of Yb3Rh4Sn13

  • S. Sarkar
  • C. V. Tomy
  • A. D. Thakur
  • G. Balakrishnan
  • D. McK Paul
  • S. Ramakrishnan
  • A. K. Grover
Article

Abstract

We have studied metastability effects pertaining to the peak effect (PE) in critical current density (Jc) via isofield scans in AC susceptibility measurements in a weakly pinned single crystal of Yb3Rh4Sn13 (Tc(0) ≈ 7.6 K). The order-disorder transition in this specimen proceeds in a multi-step manner. The phase coexistence regime between the onset temperature of the PE and the spinodal temperature (where metastability effects cease) seems to comprise two parts, where ordered and disordered regions dominate the bulk behavior, respectively. The PE line in the vortex phase diagram is argued to terminate at the low field end at a critical point in the elastic (Bragg) glass phase.

Keywords

Peak effect order-disorder transition phase coexistence spinodal tempera-ture Yb3Rh4Sn13 

PACS Nos

74.25.Qt 64.70.Dv 74.25.Dw 74.25.Sv 

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Copyright information

© Indian Academy of Sciences 2006

Authors and Affiliations

  • S. Sarkar
    • 1
  • C. V. Tomy
    • 2
  • A. D. Thakur
    • 1
  • G. Balakrishnan
    • 3
  • D. McK Paul
    • 3
  • S. Ramakrishnan
    • 1
  • A. K. Grover
    • 1
  1. 1.DCMP&MSTata Institute of Fundamental ResearchMumbaiIndia
  2. 2.Department of PhysicsIndian Institute of Technology BombayMumbaiIndia
  3. 3.Department of PhysicsUniversity of WarwickCoventryUK

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