TY - JOUR
T1 - Magnetization measurements of Sr2RuO4-Ru eutectic microplates using dc-SQUIDs
AU - Nago, Y.
AU - Sakuma, D.
AU - Ishiguro, R.
AU - Kashiwaya, S.
AU - Nomura, S.
AU - Kono, K.
AU - Maeno, Y.
AU - Takayanagi, H.
N1 - Funding Information:
This work was supported by Japan Society for the Promotion of Science (JSPS) through a Grants-in-Aid for Scientific Research KAKENHI (Nos. 15H05852, 15H05853, and 15K17708). The technical part of device fabrication 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:
© Published under licence by IOP Publishing Ltd.
PY - 2018/4/19
Y1 - 2018/4/19
N2 - 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.
AB - 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.
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U2 - 10.1088/1742-6596/969/1/012040
DO - 10.1088/1742-6596/969/1/012040
M3 - Conference article
AN - SCOPUS:85046088447
SN - 1742-6588
VL - 969
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012040
T2 - 28th International Conference on Low Temperature Physics, LT 2018
Y2 - 9 August 2017 through 16 August 2017
ER -