Spatial Development of Superconductivity in the Sr2RuO4–Ru Eutectic System
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概要
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We have clarified how the enhanced superconductivity, often referred to as the 3-K phase superconductivity, develops in the Sr2RuO4–Ru eutectic system. From the detailed ac and dc susceptibility measurements on well-characterized crystals, we revealed strongly anisotropic shielding, governed by the direction of the screening current dominated within the RuO2 plane rather than by the orientation of the Ru lamellae. The onset temperature of the 3-K phase superconductivity probed by diamagnetic screening is as high as 3.5 K. The temperature dependence of the diamagnetic shielding above around 2 K is well ascribed by the interfacial screening around each Ru lamella. Below around 2 K, the rapid development of the shielding fraction as well as its peculiar response to ac and dc magnetic fields are explained by the formation of the Josephson network consisting of inter-lamellar supercurrents.
- Physical Society of Japanの論文
- 2009-06-15
著者
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Yonezawa Shingo
Department Of Neurosurgery Aomori Prefectural Central Hospital
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Maeno Yoshiteru
Department Of Physics Faculty Of Science Hiroshima University
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Kittaka Shunichiro
Department Of Physics Graduate School Of Science Kyoto University
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Nakamura Taketomo
Department Of Physics Graduate School Of Science Kyoto University
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Yaguchi Hiroshi
Department Of Physics Graduate School Of Science Kyoto University
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Yaguchi Hiroshi
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502
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Nakamura Taketomo
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502
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Kittaka Shunichiro
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502
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Maeno Yoshiteru
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502
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Yaguchi Hiroshi
Department of Neurology, The Jikei University School of Medicine, Japan
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