Observation of flux penetration in Bi2Sr2CaCu2O8+δ crystals with irradiation-induced columnar defects

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

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Abstract

Single crystals of Bi2Sr2CaCu2O8+δ (Tc84 K) have been exposed to irradiation with 0.5-GeV I127 ions with various fluences perpendicular to the sample surface and hence parallel to the c axis. This kind of projectile produces columnar defects in the superconductors. By use of the high-resolution Faraday-effect (HRF) technique, domain patterns of the Shubnikov phase are obtained. From the measured flux-density profiles, the acting local pinning forces are determined. To allow direct comparison of the irradiation effects at the same experimental conditions, one-half of all crystals was covered by an absorber during the irradiation. We report fluence-dependent measurements of the pinning forces and the influence of irradiation on flux-creep effects.

Original languageEnglish
Pages (from-to)8496-8504
Number of pages9
JournalPhysical Review B
Volume46
Issue number13
DOIs
Publication statusPublished - 1992 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Schuster, T., Koblischka, M. R., Kuhn, H., Kronmüller, H., Leghissa, M., Gerhäuser, W., Saemann-Ischenko, G., Neumüller, H. W., & Klaumünzer, S. (1992). Observation of flux penetration in Bi2Sr2CaCu2O8+δ crystals with irradiation-induced columnar defects. Physical Review B, 46(13), 8496-8504. https://doi.org/10.1103/PhysRevB.46.8496