Critical current of the Sr2 RuO4 - Sr3 Ru2 O7 eutectic system

J. Hooper, M. Zhou, Z. Q. Mao, Y. Liu, R. Perry, Y. Maeno

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14 Scopus citations

Abstract

We report critical current measurements of the Sr2 RuO4 - Sr3 Ru2 O7 eutectic system, a solid mixture of the spin-triplet superconductor Sr2 RuO4 and the nearly ferromagnetic metal Sr3 Ru2 O7. Our results reveal that this eutectic forms an unusual superconducting state with features distinct from those of the pure Sr2 RuO4 phase. We observe a crossover from Ambegaokar-Baratoff to Ginzburg-Landau type behavior in the temperature dependence of the critical current, similar to the behavior of Josephson weak-link networks in granular high- Tc cuprates. Our results suggest that large regions of Sr3 Ru2 O7 in this solid mixture may become superconducting by an unusual proximity effect.

Original languageEnglish (US)
Article number132510
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number13
DOIs
StatePublished - May 10 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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