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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
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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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H. Yaguchi, K. Takizawa, M. Kawamura, N. Kikugawa, Y. Maeno, T. Meno, T. Akazaki, K. Semba, H. Takayanagi. 2006-09-19. Spectroscopy of SrRuO/Ru Junctions in Eutectic. https://doi.org/10.1063/1.2354825

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