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

A. A. Tulapurkar·D. Heidarian·S. Sarkar·S. Ramakrishnan·A. K. Grover·E. Yamamoto·Y. Haga·M. Hedo·Y. Inada·Y. Onuki
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Abstract

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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A. A. Tulapurkar, D. Heidarian, S. Sarkar, S. Ramakrishnan, A. K. Grover, E. Yamamoto, Y. Haga, M. Hedo, Y. Inada, Y. Onuki. 2000-09-05. Establishment of a stable vortex state in the peak effect region in a weakly pinned superconductor CeRu_2. https://arxiv.org/abs/cond-mat/0009069

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