Comparison of thermomagnetic history effects in weakly pinned single crystals of R 3Rh4Sn13 (R=Yb, Ca) |
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| Authors: | S Sarkar S Ramakrishnan AK Grover CV Tomy G Balakrishnan D McK Paul |
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| Affiliation: | (1) Tata Institute of Fundamental Research, Homi Bhabha Road, 400 005 Mumbai, India;(2) Department of Physics, Indian Institute of Technology, 400 076 Powai, Mumbai, India;(3) Department of Physics, University of Warwick, CV4 7AL Coventry, UK |
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| Abstract: | A comparative study of the thermomagnetic memory effects of J c in two weakly pinned low T c 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 T c YBa2Cu3O7-δ for H‖c. |
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| Keywords: | Weakly pinned R3Rh4Sn13 thermomagnetic history effects peak effect amorphization of flux line lattice order-disorder transition |
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