Flux creep and flux jumping

R. Mints*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

The flux jump instability of Bean’s critical state in the flux-creep regime of type-II superconductors is considered. We find the flux-jump field (Formula presented) which determines stability criterion of the superconducting state. The dependence of (Formula presented) on the external magnetic-field ramp rate B(Formula presented) is calculated. We demonstrate that under the conditions typical for most of the magnetization experiments the slope of the current-voltage curve in the flux-creep regime determines the stability of the Bean’s critical state, i.e., the value of (Formula presented). We show that a flux jump can be preceded by magnetothermal oscillations and find the frequency of these oscillations as a function of B(Formula presented).

Original languageEnglish
Pages (from-to)12311-12317
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number18
DOIs
StatePublished - 1996

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