Establishment of a stable vortex state in the peak effect region in a weakly pinned superconductor CeRu_2

Details Establishment of a stable vortex state in the peak effect region in a weakly pinned superconductor CeRu_2 Establishment of a stable vortex state in the peak effect region in a weakly pinned superconductor CeRu_2

2000-09-05

arxiv.org/abs/cond-mat/0009069v1

Physics

Condensed Matter

Superconductivity

6 pages and 5 figures

Scientific paper

We present magnetization data on a weakly pinned CeRu_2 single crystal showing the existence of a stable state of the vortex lattice in the peak effect region. The stable state is achieved by cycling the magnetic field by small amplitude. This stable state is characterized by a unique value of critical current density (J_c), independent of the magnetic history of the sample. The results support the recent model proposed by Ravikumar et al \cite{r39} on the history dependence of the J_c.

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