Investigation of the vortex states of Sr2RuO4-Ru eutectic microplates using DC-SQUIDs

Daisuke Sakuma, Yusuke Nago, Ryosuke Ishiguro, Satoshi Kashiwaya, Shintaro Nomura, Kimitoshi Kono, Yoshiteru Maeno, Hideaki Takayanagi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We investigated the magnetic properties of a Sr2RuO4-Ru eutectic microplate containing a single Ru-inclusion using micrometer-sized DC-SQUIDs (direct-current superconducting quantum interference devices). A phase frustration at the interface between chiral p-wave superconducting Sr2RuO4 and s-wave superconducting Ru is expected to cause novel magnetic vortex states such as the spontaneous Ru-center vortex under zero magnetic field [as reported by H. Kaneyasu and M. Sigrist, J. Phys. Soc. Jpn. 79, 053706 (2010)]. Our experimental results show no positive evidence for such a spontaneous vortex state. However, in an applied field, an abrupt change in the magnetic flux distribution was observed at a superconducting transition of Ru. The flux distribution is clarified by comparing our experimental results with electromagnetic field simulations in our sample geometry. We discuss the transition of the vortex states and the superconducting coupling at the Sr2RuO4=Ru interface

Original languageEnglish
Article number114708
JournalJournal of the Physical Society of Japan
Volume86
Issue number11
DOIs
Publication statusPublished - 2017 Nov 15

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eutectics
direct current
vortices
interference
frustration
magnetic flux
micrometers
electromagnetic fields
inclusions
magnetic properties
causes
geometry
magnetic fields
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Investigation of the vortex states of Sr2RuO4-Ru eutectic microplates using DC-SQUIDs. / Sakuma, Daisuke; Nago, Yusuke; Ishiguro, Ryosuke; Kashiwaya, Satoshi; Nomura, Shintaro; Kono, Kimitoshi; Maeno, Yoshiteru; Takayanagi, Hideaki.

In: Journal of the Physical Society of Japan, Vol. 86, No. 11, 114708, 15.11.2017.

Research output: Contribution to journalArticle

Sakuma, D, Nago, Y, Ishiguro, R, Kashiwaya, S, Nomura, S, Kono, K, Maeno, Y & Takayanagi, H 2017, 'Investigation of the vortex states of Sr2RuO4-Ru eutectic microplates using DC-SQUIDs', Journal of the Physical Society of Japan, vol. 86, no. 11, 114708. https://doi.org/10.7566/JPSJ.86.114708
Sakuma, Daisuke ; Nago, Yusuke ; Ishiguro, Ryosuke ; Kashiwaya, Satoshi ; Nomura, Shintaro ; Kono, Kimitoshi ; Maeno, Yoshiteru ; Takayanagi, Hideaki. / Investigation of the vortex states of Sr2RuO4-Ru eutectic microplates using DC-SQUIDs. In: Journal of the Physical Society of Japan. 2017 ; Vol. 86, No. 11.
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AU - Kashiwaya, Satoshi

AU - Nomura, Shintaro

AU - Kono, Kimitoshi

AU - Maeno, Yoshiteru

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