Magnetization measurements of Sr2RuO4-Ru eutectic microplates using dc-SQUIDs

Y. Nago, D. Sakuma, R. Ishiguro, S. Kashiwaya, S. Nomura, K. Kono, Y. Maeno, H. Takayanagi

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


We report magnetization measurements of Sr2RuO4-Ru eutectic microplates using micro-dc-SQUIDs. Sr2RuO4 is considered as a chiral p-wave superconductor and hence Sr2RuO4-Ru eutectic becomes in an unstable state with a superconducting phase frustration between a chiral p-wave state of Sr2RuO4 and a s-wave state of Ru. To compensate the frustration, a single quantum vortex is spontaneously formed at the center of the Ru inclusion at sufficiently low temperatures. However, such a spontaneous vortex state has not been experimentally observed yet. In this study, we prepared a micro-dc-SQUID and a Sr2RuO4-Ru eutectic microplate containing a single Ru-inclusion at the center of the microplate. We performed magnetization measurements down below the superconducting transition temperature of the Ru inclusion to investigate the spontaneous Ru-center vortex state.

Original languageEnglish
Article number012040
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2018 Apr 19
Event28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
Duration: 2017 Aug 92017 Aug 16

ASJC Scopus subject areas

  • General Physics and Astronomy


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