Unusual Field-Dependence of the Intragrain Superconductive Transition in RuSr2EuCu2O8

B. Lorenz; Y. Y. Xue; R. L. Meng; C. W. Chu

doi:10.1103/PhysRevB.65.174503

Unusual Field-Dependence of the Intragrain Superconductive Transition in RuSr2EuCu2O8

Superconductivity 2009-11-07 v1

Authors: B. Lorenz , Y. Y. Xue , R. L. Meng , C. W. Chu

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Abstract

A narrow intragrain phase-lock transition was observed in RuSr2EuCu2O8 under a magnetic field H up to a few Tesla. The corresponding transition temperature, T2, decreases rapidly (about 100 K/T at low fields) with H indicating that the grains of RuSr2EuCu2O8 behave like a Josephson-junction-array instead of a homogeneous bulk superconductor. Our data suggest that the bulk superconducting transition may occur on a length scale well below the grain size of 2 to 6 micrometer.

Keywords

superconductivity Josephson junction array magnetic field dependence grain boundary transition temperature

Cite

@article{arxiv.cond-mat/0107061,
  title  = {Unusual Field-Dependence of the Intragrain Superconductive Transition in RuSr2EuCu2O8},
  author = {B. Lorenz and Y. Y. Xue and R. L. Meng and C. W. Chu},
  journal= {arXiv preprint arXiv:cond-mat/0107061},
  year   = {2009}
}

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