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Absence of an elastic vortex glass in disordered HTS

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
468
Identifiers
DOI: 10.1016/j.physc.2008.05.008
Keywords
  • Elastic Vortex Glass
  • Magnetization Relaxation
  • Normalised Vortex-Creep Activation Energy
  • Plastic Creep
Disciplines
  • Physics

Abstract

Abstract Analyses of standard current–voltage ( I– V) characteristics of disordered high-temperature superconductors (HTS) indicate that the vortex phase at high magnetic fields H should be an elastic vortex glass, where the vortex pinning barriers diverge at low current densities, whereas dc magnetization relaxation measurements reveal the presence of nondiverging (plastic) pinning barriers in a wide H– T domain. We show that the different conclusions concerning the nature of the vortex phase at high H in disordered HTS seem to be due to the ordering effect of the driving force existing in various experiments.

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