Understand iron-based superconductivity through materials with a separate spatial dimensionality
| Project/Area Number |
26800175
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
NAMBU Yusuke 東北大学, 金属材料研究所, 准教授 (60579803)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 鉄系超伝導 / 次元性 / 中性子散乱 |
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| Outline of Final Research Achievements |
Iron-based superconductivity has attracted a lot of interest due to a possibly novel pairing mechanism. To elucidate the mechanism of the iron-based superconductivity, we performed research on systems with a separate spatial dimensionality. Magnetic structures of AFe2X3 (A = K, Rb, Cs, Ba; X = S, Se, Te) have been determined through representation analysis to neutron powder diffraction data. We successfully induced first superconducting state in BaFe2S3 by applying hydrostatic pressures. In addition, we succeeded in observing characteristic to low-dimensional systems such as magnetic fluctuations over a wide temperature regime and magnetic excitations, and finding that the dilution in (Ba,Cs)Fe2Se3 can completely suppress the magnetic ordering.
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Report
(3 results)
Research Products
(28 results)
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[Journal Article] Temperature and composition phase diagram in the iron-based ladder compounds Ba1－xCsxFe2Se32015
Author(s)
Takafumi Hawai, Yusuke Nambu, Kenya Ohgushi, Fei Du, Yasuyuki Hirata, Maxim Avdeev, Yoshiya Uwatoko,Yurina Sekine, Hiroshi Fukazawa, Jie Ma, Songxue Chi, Yutaka Ueda, Hideki Yoshizawa, Taku J. Sato
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Journal Title
Physical Review B
Volume: 91
Issue: 18
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Pressure-induced superconductivity in the iron-based ladder material BaFe2S32015
Author(s)
Hiroki Takahashi, Akira Sugimoto, Yusuke Nambu, Touru Yamauchi, Yasuyuki Hirata, Takateru Kawakami, Maxim Avdeev, Kazuyuki Matsubayashi, Fei Du, Chizuru Kawashima,Hideto Soeda, Satoshi Nakano, Yoshiya Uwatoko, Yutaka Ueda, Taku J. Sato, Kenya Ohgushi
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Journal Title
Nature Materials
Volume: 14
Issue: 10
Pages: 1008-1012
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Science from the Initial Operation of HRC2015
Author(s)
Shinichi Itoh, Tetsuya Yokoo, Takatsugu Masuda, Hideki Yoshizawa, Minoru Soda, Yoichi Ikeda, Soshi Ibuka, Daichi Kawana, Taku J. Sato, Yusuke Nambu, Keitaro Kuwahara, Shin-ichiro Yano, Jun Akimitsu, Yoshio Kaneko, Yoshinori Tokura, Masaki Fujita, Masashi Hase, Kazuaki Iwasa, ほか7名
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Journal Title
JPS Conf. Proc.
Volume: 8
Pages: 0340011-6
DOI
Related Report
Peer Reviewed
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