Abstract
We present magnetization data on a weakly pinned single crystal of CeRu2, showing the existence of a stable state of the vortex matter in the peak effect (PE) region. The stable state is achieved by cycling the magnetic field by a small amplitude. It is characterized by a unique value of the critical current density, independent of the magnetic history of the sample. The results support a recent phenomenological model proposed by Ravikumar et al. [Phys. Rev. B 61 (2000) R6479] which postulates a specific recipe to incorporate the history dependence of the current density. Our data also shows the occurrence of a first order phase transition from an ordered vortex phase to a disordered phase across the PE.
Original language | English |
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Pages (from-to) | 59-64 |
Number of pages | 6 |
Journal | Physica C: Superconductivity and its applications |
Volume | 355 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Jun 1 2001 |
Externally published | Yes |
Keywords
- CeRu
- Peak effect
- Stable vortex state
- Step change in equilibrium magnetization
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering