Study of suprconductivity in Fe-based superconductors by pressure and carrier control
| Project/Area Number |
22684016
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Chiba University |
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Principal Investigator |
FUKAZAWA Hideto 千葉大学, 理学(系)研究科(研究院), 准教授 (90361443)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
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| Keywords | 強相関電子系 / 低温物性 / 磁性 / 物性実験 / 超伝導 |
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| Research Abstract |
In order to clarify superconducting paring symmetry and its glue in Fe-based supeconductor Ba1-xKxFe2As2, I performed NMR/NQR measurements of this system through pressure and carrier control. Antiferromagnetic fluctuations are considered to be important in this system and NMR and NQR are quite sensitive to the fluctuations. I clarified that antiferromagmetic fluctuations are surpressed by carrier doping but that they exist in the range of almost all the carrier doping level. Furthermore, superconducting gap is characterized by multiple gap and the systematic change of superconducting gap can be understood by the change of Fermi surface. In NMR/NQR sutdy under pressure, I have succeeded in increasing the signal intensity by using nonmagnetic and insulating anvil of ZrO2.
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Report
(5 results)
Research Products
(79 results)
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[Journal Article] Octet-Line Node Structure of Superconducting Order Parameter in Kfe_2As_22012
Author(s)
K. Okazaki, Y. Ota, Y. Kotani, W. Malaeb, Y. Ishida, T. Shimojima, T. Kiss, S. Watanabe, C.-T. Chen, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, T. Saito, H. Fukazawa, 他9名
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Journal Title
Science
Volume: Vol.337
Pages: 1314-1317
Related Report
Peer Reviewed
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