Superconductivity and multiferroics in Fe-based ladder materials
| Project/Area Number |
18H01159
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
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| Research Institution | Tohoku University |
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Principal Investigator |
Ohgushi Kenya 東北大学, 理学研究科, 教授 (30455331)
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| Co-Investigator(Kenkyū-buntansha) |
今井 良宗 東北大学, 理学研究科, 准教授 (30435599)
青山 拓也 東北大学, 理学研究科, 助教 (80757261)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
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| Keywords | 強相関電子系 / 鉄系超伝導 / マルチフェロイクス / 軌道秩序 / 梯子格子 / マルチフェロイックス / 鉄系超伝導体 / 第二高調波発生 / 梯子型鉄系化合物 |
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| Outline of Final Research Achievements |
By using several complementary experimental probes, we have elucidated the electronic properties of iron-based ladder compounds. It is found that the 3d electrons of Fr irons exhibit a variety of magnetic and orbital orders due to the low dimensionality, multi-orbital nature, and strongly correlated electron effects. Fluctuations of the stripe-type magnetic order/ferro-type orbital order is responsible for the formation of superconductivity, while block-type magnetic order/propeller- type orbital order shows the multiferroic phenomena.
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| Academic Significance and Societal Importance of the Research Achievements |
超伝導やマルチフェロイクスを示す材料は、次世代エレクトロニスで使用されるデバイスの基盤材料として有望である。本研究を通して、超伝導やマルチフェロイクスが発現する微視的機構が電子論的に解明されたことは意義深く、将来、より高温で動作するデバイス・より高い機能を有するデバイスを作成することに繋がる。
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Report
(4 results)
Research Products
(40 results)
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[Journal Article] Dichotomy Between Orbital and Magnetic Nematic Instabilities in BaFe2S32020
Author(s)
S. Hosoi, T. Aoyama, K. Ishida, Y. Mizukami, K. Hashizume, S. Imaizumi, Y. Imai, K. Ohgushi, Y. Nambu, M. Kimata, S. Kimura, and T. Shibauchi
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Journal Title
Phys. Rev. Res.
Volume: 2
Issue: 4
Pages: 043293-043293
DOI
Related Report
Peer Reviewed / Open Access
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