Evidence for a directed δtc-type flux pinning by means of nanostripes in (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy high-Tc superconductors

M. R. Koblischka, U. Hartmann

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Abstract

By means of four-point transport measurements on bulk, high-Tc superconducting samples of composition (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy exhibiting self-organized nanostripes formed by nanoclusters of the light-rare-earth-rich phase, we find that at temperatures close to the transition temperature the currents flowing parallel to the nanostripes are clearly larger than in the perpendicular direction. Constructing a pinning force diagram from the jc(Ha)-data obtained, we find strong evidence for a dominating δTc-pinning when the currents are flowing parallel to the nanostripes.

Original languageEnglish
Article number47002
JournalEPL
Volume89
Issue number4
DOIs
Publication statusPublished - 2010 Mar 23

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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