Superconducting transition of Ru in SQUIDs with Nb/Ru/Sr2RuO4 junctions

Y. Nago; R. Ishiguro; T. Sakurai; M. Yakabe; T. Nakamura; S. Yonezawa; S. Kashiwaya; H. Takayanagi; Y. Maeno

doi:10.1088/1742-6596/568/2/022031

Superconducting transition of Ru in SQUIDs with Nb/Ru/Sr₂RuO₄ junctions

Y. Nago, R. Ishiguro, T. Sakurai, M. Yakabe, T. Nakamura, S. Yonezawa, S. Kashiwaya, H. Takayanagi, Y. Maeno

物理学科

研究成果: Conference article › 査読

4 被引用数 (Scopus)

抄録

We have measured transport properties and magnetic responses of direct current superconducting quantum interference devices(dc-SQUIDs) with Nb/Ru/Sr₂RuO₄ junctions on The same Ru inclusion of a Sr₂RuO₄-Ru eutectic crystal. We observed a superconducting transition of The Ru at 0.50 K and another transition with anomalous interference patterns of The SQUID at 0.40 K. The second transition led to change of The SQUID structure due to energy competition of alternative supercurrent paths. Phase shifts of The peak of The Fraunhofer diffraction pattern were observed below The transition temperatures, implying topological effects due to a chiral p-wave state or its competition with a s-wave state.

本文言語	English
論文番号	022031
ジャーナル	Journal of Physics: Conference Series
巻	568
DOI	https://doi.org/10.1088/1742-6596/568/2/022031
出版ステータス	Published - 2014
イベント	27th International Conference on Low Temperature Physics, LT 2014 - Buenos Aires, Argentina 継続期間: 2014 8月 6 → 2014 8月 13

ASJC Scopus subject areas

物理学および天文学（全般）

文献へのアクセス

10.1088/1742-6596/568/2/022031

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引用スタイル

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title = "Superconducting transition of Ru in SQUIDs with Nb/Ru/Sr2RuO4 junctions",

abstract = "We have measured transport properties and magnetic responses of direct current superconducting quantum interference devices(dc-SQUIDs) with Nb/Ru/Sr2RuO4 junctions on The same Ru inclusion of a Sr2RuO4-Ru eutectic crystal. We observed a superconducting transition of The Ru at 0.50 K and another transition with anomalous interference patterns of The SQUID at 0.40 K. The second transition led to change of The SQUID structure due to energy competition of alternative supercurrent paths. Phase shifts of The peak of The Fraunhofer diffraction pattern were observed below The transition temperatures, implying topological effects due to a chiral p-wave state or its competition with a s-wave state.",

author = "Y. Nago and R. Ishiguro and T. Sakurai and M. Yakabe and T. Nakamura and S. Yonezawa and S. Kashiwaya and H. Takayanagi and Y. Maeno",

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T1 - Superconducting transition of Ru in SQUIDs with Nb/Ru/Sr2RuO4 junctions

AU - Nago, Y.

AU - Ishiguro, R.

AU - Sakurai, T.

AU - Yakabe, M.

AU - Nakamura, T.

AU - Yonezawa, S.

AU - Kashiwaya, S.

AU - Takayanagi, H.

AU - Maeno, Y.

PY - 2014

Y1 - 2014

N2 - We have measured transport properties and magnetic responses of direct current superconducting quantum interference devices(dc-SQUIDs) with Nb/Ru/Sr2RuO4 junctions on The same Ru inclusion of a Sr2RuO4-Ru eutectic crystal. We observed a superconducting transition of The Ru at 0.50 K and another transition with anomalous interference patterns of The SQUID at 0.40 K. The second transition led to change of The SQUID structure due to energy competition of alternative supercurrent paths. Phase shifts of The peak of The Fraunhofer diffraction pattern were observed below The transition temperatures, implying topological effects due to a chiral p-wave state or its competition with a s-wave state.

AB - We have measured transport properties and magnetic responses of direct current superconducting quantum interference devices(dc-SQUIDs) with Nb/Ru/Sr2RuO4 junctions on The same Ru inclusion of a Sr2RuO4-Ru eutectic crystal. We observed a superconducting transition of The Ru at 0.50 K and another transition with anomalous interference patterns of The SQUID at 0.40 K. The second transition led to change of The SQUID structure due to energy competition of alternative supercurrent paths. Phase shifts of The peak of The Fraunhofer diffraction pattern were observed below The transition temperatures, implying topological effects due to a chiral p-wave state or its competition with a s-wave state.

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