Spectroscopy of SrRuO/Ru Junctions in Eutectic

Details Spectroscopy of SrRuO/Ru Junctions in Eutectic Spectroscopy of SrRuO/Ru Junctions in Eutectic

2006-09-19

arxiv.org/abs/cond-mat/0609444v1

Physics

Condensed Matter

Superconductivity

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

Scientific paper

10.1063/1.2354825

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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