Elucidation of the stable vortex state across the peak effect region in CeRu2

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

doi:10.1016/S0921-4534(00)01772-X

Elucidation of the stable vortex state across the peak effect region in CeRu₂

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

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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
Pages (from-to)	59-64
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	355
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(00)01772-X
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

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Elucidation of the stable vortex state across the peak effect region in CeRu₂. / Tulapurkar, A. A.; Heidarian, D.; Sarkar, S.; Ramakrishnan, S.; Grover, A. K.; Yamamoto, E.; Haga, Y.; Hedo, M.; Inada, Y.; Onuki, Y.

In: Physica C: Superconductivity and its applications, Vol. 355, No. 1-2, 01.06.2001, p. 59-64.

Research output: Contribution to journal › Article › peer-review

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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.",

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T1 - Elucidation of the stable vortex state across the peak effect region in CeRu2

AU - Tulapurkar, A. A.

AU - Heidarian, D.

AU - Sarkar, S.

AU - Ramakrishnan, S.

AU - Grover, A. K.

AU - Yamamoto, E.

AU - Haga, Y.

AU - Hedo, M.

AU - Inada, Y.

AU - Onuki, Y.

PY - 2001/6/1

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N2 - 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.

AB - 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.

KW - CeRu

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KW - Stable vortex state

KW - Step change in equilibrium magnetization

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