Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb$_3$Rh$_4$Sn$_{13}$

Details Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb$_3$Rh$_4$Sn$_{13}$ Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb$_3$Rh$_4$Sn$_{13}$

2005-12-28

arxiv.org/abs/cond-mat/0512679v1

Current trends in Vortex State Physics, Pramana-J. Phys. 66, 179 (2006)

Physics

Condensed Matter

Superconductivity

To appear in Current trends in Vortex State Studies (Pramana-J. Phys.)

Scientific paper

10.1007/BF02704946

We have studied metastability effects pertaining to the peak effect (PE) in critical current density ($J_c$) via isofield scans in ac susceptibility measurements in a weakly pinned single crystal of Yb$_3$Rh$_4$Sn$_{13}$ ($T_c(0) \approx 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.

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