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Phenomenological model for history effects and metastability in weakly pinned superconductors

Phenomenological model for history effects and metastability in weakly pinned superconductors We present a phenomenological model to describe features in the hysteretic magnetic response of weak pinning superconductors across the peak effect region. It accounts for the experimentally observed history dependent behavior of critical current density and the metastability of the vortex state prior to and across the peak effect region of superconducting systems such as NbSe 2 , CeRu 2 , and YBa 2 Cu 3 O 7 . Moreover, this model reduces to Bean’s critical state model as a limiting case. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Phenomenological model for history effects and metastability in weakly pinned superconductors

Ravikumar, G; Bhagwat, K. V; Sahni, V. C
Physical Review B , Volume 61 (10) – Mar 1, 2000
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Publisher
American Physical Society (APS)
Copyright
Copyright © 2000 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.61.R6479
Publisher site
See Article on Publisher Site

Abstract

We present a phenomenological model to describe features in the hysteretic magnetic response of weak pinning superconductors across the peak effect region. It accounts for the experimentally observed history dependent behavior of critical current density and the metastability of the vortex state prior to and across the peak effect region of superconducting systems such as NbSe 2 , CeRu 2 , and YBa 2 Cu 3 O 7 . Moreover, this model reduces to Bean’s critical state model as a limiting case.

Journal

Physical Review B – American Physical Society (APS)

Published: Mar 1, 2000

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