Pramana

, Volume 58, Issue 5–6, pp 979–983

Comparison of thermomagnetic history effects in weakly pinned single crystals of R3Rh4Sn13 (R=Yb, Ca)

  • S Sarkar
  • S Ramakrishnan
  • AK Grover
  • CV Tomy
  • G Balakrishnan
  • D McK Paul
Physics Of Vortex State

Abstract

A comparative study of the thermomagnetic memory effects of Jc in two weakly pinned low Tc superconductors, Ca3Rh4Sn13 (CaRhSn) and Yb3Rh4Sn13 (YbRhSn), is presented. In both the systems, the peak effect (PE) phenomenon appears as an order-disorder transformation through stepwise amorphization of the flux line lattice (FLL). However, in CaRhSn. we can witness another disorder-driven transition (Bragg glass (BG) to a vortex glass (VG) in a distinct manner as in a single crystal of high Tc YBa2Cu3O7-δ for Hc.

Keywords

Weakly pinned R3Rh4Sn13 thermomagnetic history effects peak effect amorphization of flux line lattice order-disorder transition 

PACS Nos

74.25.Dw 74.60.Ge 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    R Modler et al, Phys. Rev. Lett. 761, 1292 (1996)CrossRefADSGoogle Scholar
  2. [1]a
    M Tachiki et al, Z. Phys. B100, 369 (1996)CrossRefGoogle Scholar
  3. [2]
    C V Tomy et al, Phys. Rev. B56, 8346 (1997)ADSGoogle Scholar
  4. [2]a
    C V Tomy et al, Physica C280, 1 (1997)ADSGoogle Scholar
  5. [3]
    A I Larkin and Y N Ovchinnikov, J. Low Temp. Phys. 34, 409 (1979)CrossRefGoogle Scholar
  6. [4]
    S Sarkar et al, Phys. Rev. B61, 12394 (2000)ADSGoogle Scholar
  7. [4]a
    S Sarkar et al, Physica C356, 181 (2001)ADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 2002

Authors and Affiliations

  • S Sarkar
    • 1
  • S Ramakrishnan
    • 1
  • AK Grover
    • 1
  • CV Tomy
    • 2
  • G Balakrishnan
    • 3
  • D McK Paul
    • 3
  1. 1.Tata Institute of Fundamental ResearchMumbaiIndia
  2. 2.Department of PhysicsIndian Institute of TechnologyPowai, MumbaiIndia
  3. 3.Department of PhysicsUniversity of WarwickCoventryUK

Personalised recommendations