Influence of irradiation-induced latent tracks on local flux pinning in bi-2212 crystals

M. Leghissa, Th Schuster, W. Gerhäuser, S. Klaumünzer, M. R. Koblischka, H. Kronmüller, H. Kuhn, H. W. Neumüller, G. Saemann-Ischenko

Research output: Contribution to journalLetterpeer-review

23 Citations (Scopus)

Abstract

For the first time the influence of irradiation-induced columnar defects (0.5 GeV I-ions) on flux line pinning in Bi-2212 crystals has been investigated by means of the high-resolution magneto-optical Faraday effect. By irradiating only a part of each sample, the local change in the flux pinning has been determined. Irradiated and nonirradiated parts have been investigated simultaneously under the same experimental conditions. At T = 5 K and μ0Hext = (0 4 300) mT a large enhancement of jc m is found in the irradiated region. The observation of the time dependence of the flux density distribution yields small values for the pinning potential U, supporting the model of two-dimensional pancake vortex pinning.

Original languageEnglish
Pages (from-to)323-328
Number of pages6
JournalEPL
Volume19
Issue number4
DOIs
Publication statusPublished - 1992 Jun 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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