Unconventional interaction between spin-triplet superconductivity and magnetic fields
| Project/Area Number |
26287078
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Kyoto University |
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Principal Investigator |
Yonezawa Shingo 京都大学, 理学(系)研究科(研究院), 助教 (30523584)
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| Co-Investigator(Kenkyū-buntansha) |
石田 憲二 京都大学, 理学(系)研究科(研究院), 教授 (90243196)
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| Research Collaborator |
MAENO Yoshiteru
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2016: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | スピン三重項超伝導 / ルテニウム酸化物 / ネマティック超伝導 / 強磁性超伝導 / 比熱 / 核磁気共鳴 / NMR / トポロジカル超伝導 / ナイトシフト / 超伝導内部自由度 / 低温物性 / 熱力学測定 / 超伝導対破壊機構 / 熱力学的測定 |
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| Outline of Final Research Achievements |
Through this research program, we obtained firm evidence for spin-triplet superconductivity of Sr2RuO4. We also obtained important information on the unusual first-order superconducting transition recently found in this oxide. Moreover, in the new spin-triplet superconductor candidate CuxBi2Se3, we found a novel superconducting state, namely the "nematic superconductivity", where the rotational symmetry is spontaneously broken in the superconducting gap amplitude. We also determined magnetic excitation that is related to the superconducting pairing glue in the ferromagnetic superconductor UCoGe.
Overall, we performed comprehensive research on various spin-triplet superconductors and obtained important bases toward further investigation of the spin-triplet superconductivity, as well as of topological superconductivity, which is closely related to the spin-triplet superconductivity.
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Report
(4 results)
Research Products
(106 results)
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[Presentation] SrRuO3/Sr2RuO4接合におけるスピン三重項近接効果の異方的磁場応答2017
Author(s)
國枝正直, M. S. Anwar, S. R. Lee, 石黒亮輔, 杉本雄亮, 田野佑典, S. J. Kang, Y. J. Shin, 米澤進吾, D. Manske, 高柳英明, T. W. Noh, 前野悦輝
Organizer
日本物理学会第72回年次大会（2017年）
Place of Presentation
大阪大学豊中キャンパス
Year and Date
2017-03-17
Related Report
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[Presentation] CuxBi2Se3の比熱測定によるネマティック超伝導の発2016
Author(s)
S. Yonezawa, K. Tajiri, S. Nakata, Z. Wang, Y. Nagai, K. Segawa, Y. Ando, Y. Maeno
Organizer
第2回「トポロジーが紡ぐ物質科学のフロンティア」領域研究会
Place of Presentation
東北大学
Year and Date
2016-12-16
Related Report
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[Presentation] Long-range p-wave proximity effect at the SrRuO3/Sr2RuO4 interface2016
Author(s)
M. S. Anwar, M. Kunieda, Y. Sugimoto, S. Yonezawa, R. Ishiguro, Y. Tano, S. R. Lee, Y. J. Shin, S. J. Kang, H. Takayanagi, T. W. Noh, and Y. Maeno
Organizer
日本物理学会2016年秋季大会
Place of Presentation
金沢大学角間キャンパス
Year and Date
2016-09-13
Related Report
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[Presentation] トンネル接合Au/SrTiO3/SrRuO3/Sr2RuO4におけるスピン三重項近接効果2016
Author(s)
國枝正直, M. S. Anwar, 杉本雄亮, 米澤進吾, 石黒亮輔, 田野佑典, S. R. Lee, Y. J. Shin, S. J. Kang, 高柳英明, T. W. Noh, 前野悦輝
Organizer
日本物理学会2016年秋季大会
Place of Presentation
金沢大学角間キャンパス
Year and Date
2016-09-13
Related Report
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[Presentation] 単結晶CeCu2Si2におけるCu-NQR2016
Author(s)
樋口匠, 真砂全宏, 山中隆義, 石田憲二, 常盤欣文, H. S. Jeevan, C. Geibel
Organizer
日本物理学会第71回年次大会（2016年）
Place of Presentation
東北学院大学
Year and Date
2016-03-19
Related Report
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[Presentation] Superconducting and vortex phase diagrams of Sr2RuO42015
Author(s)
S. Yonezawa, D. Shibata, H. Tanaka, T. Kajikawa, T. Nojima, Y. Maeno
Organizer
The International Conference on Materials and Mechanisms of Superconductivity 2015 (M2S-HTSC 2015)
Place of Presentation
Geneva, Switzerland
Year and Date
2015-08-23
Related Report
Int'l Joint Research
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