Spectroscopy of SrRuO/Ru Junctions in Eutectic

H. Yaguchi; K. Takizawa; M. Kawamura; N. Kikugawa; Y. Maeno; T. Meno; T. Akazaki; K. Semba; H. Takayanagi

doi:10.1063/1.2354825

Spectroscopy of SrRuO/Ru Junctions in Eutectic

Superconductivity 2009-11-11 v1 Strongly Correlated Electrons

Authors: H. Yaguchi , K. Takizawa , M. Kawamura , N. Kikugawa , Y. Maeno , T. Meno , T. Akazaki , K. Semba , H. Takayanagi

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Abstract

We have investigated the tunnelling properties of the interface between superconducting Sr2RuO4 and a single Ru inclusion in eutectic. By using a micro-fabrication technique, we have made Sr2RuO4/Ru junctions on the eutectic system that consists of Sr2RuO4 and Ru micro-inclusions. Such a eutectic system exhibits surface superconductivity, called the 3-K phase. A zero bias conductance peak (ZBCP) was observed in the 3-K phase. We propose to use the onset of the ZBCP to delineate the phase boundary of a time-reversal symmetry breaking state.

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@article{arxiv.cond-mat/0609444,
  title  = {Spectroscopy of SrRuO/Ru Junctions in Eutectic},
  author = {H. Yaguchi and K. Takizawa and M. Kawamura and N. Kikugawa and Y. Maeno and T. Meno and T. Akazaki and K. Semba and H. Takayanagi},
  journal= {arXiv preprint arXiv:cond-mat/0609444},
  year   = {2009}
}

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To be published in Proc of 24th Int. Conf. on Low Temperature Physics (LT24); 2 pages

Spectroscopy of SrRuO/Ru Junctions in Eutectic

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