TY - JOUR
T1 - Investigation of the vortex states of Sr2RuO4-Ru eutectic microplates using DC-SQUIDs
AU - Sakuma, Daisuke
AU - Nago, Yusuke
AU - Ishiguro, Ryosuke
AU - Kashiwaya, Satoshi
AU - Nomura, Shintaro
AU - Kono, Kimitoshi
AU - Maeno, Yoshiteru
AU - Takayanagi, Hideaki
N1 - Funding Information:
Acknowledgments This study was supported by the Japan Society for the Promotion of Science (JSPS) through Grants-in-Aid for Scientific Research KAKENHI (Nos. 15H05852, 15H05853, and 15K17708). Device fabrication for this study was supported by the NIMS Nanofabrication Platform of the “Nanotechnology Platform Project” and the RIKEN Center for Emergent Matter Science, sponsored by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
Publisher Copyright:
© 2017 The Physical Society of Japan.
PY - 2017/11/15
Y1 - 2017/11/15
N2 - 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
AB - 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
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U2 - 10.7566/JPSJ.86.114708
DO - 10.7566/JPSJ.86.114708
M3 - Article
AN - SCOPUS:85036494606
SN - 0031-9015
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 11
M1 - 114708
ER -