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

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

Research output: Contribution to journalConference article

Abstract

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
Volume969
Issue number1
DOIs
Publication statusPublished - 2018 Apr 19
Event28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
Duration: 2017 Aug 92017 Aug 16

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Nago, Y., Sakuma, D., Ishiguro, R., Kashiwaya, S., Nomura, S., Kono, K., Maeno, Y., & Takayanagi, H. (2018). Magnetization measurements of Sr2RuO4-Ru eutectic microplates using dc-SQUIDs. Journal of Physics: Conference Series, 969(1), [012040]. https://doi.org/10.1088/1742-6596/969/1/012040