On the possibility for flux penetration into a Campbell regime near the onset of irreversibility in high temperature superconductors

M. Konczykowski, Y. Wolfus, Y. Yeshurun, F. Holtzberg

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9 Scopus citations

Abstract

The onset of dissipation and of harmonic generation in response to an ac magnetic field of high temperature superconductors are used for the identification of the irreversibility line below which dissipation occurs due to flux motion in the sample. We demonstrate, however, that in the presence of a static magnetic field and for low amplitude ac fields, the penetration close to the onset may occur into the Campbell regime in which the vortex motion induced by the ac field occurs inside the pinning potential well.

Original languageEnglish
Pages (from-to)305-313
Number of pages9
JournalPhysica A: Statistical Mechanics and its Applications
Volume200
Issue number1-4
DOIs
StatePublished - 15 Nov 1993

Bibliographical note

Funding Information:
We wish to thank M.V. Feigelman,V Geshkenbein,J . Gilchrist, C.J. van der Beek and V.M. Vinokur for illuminating discussions;S . Bouffard and F. Rullier-Albenque for their help in heavy ion irradiation. The work at Bar Ran is supportedi n part by the Ministry of Sciencea nd Technology and in part by the Ministry of Energy and Infrastructure. One of us (Y.W.) acknowledges financial support from the Levi Eshkol Foundation.

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